TS4962IQT [STMICROELECTRONICS]
2.8W filter-free mono class D audio power amplifier; 2.8W无滤波器单声道D类音频功率放大器
| 型号： | TS4962IQT |
| 厂家： | 
ST |
| 描述： | 2.8W filter-free mono class D audio power amplifier |
| 文件： | 总46页 (文件大小：607K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS4962
2.8W filter-free mono class D audio power amplifier
Features
DFN8 3x3 mm
■ Operating from V =2.4V to 5.5V
CC
■ Standby mode active low
■ Output power: 2.8W into 4Ω and 1.7W into 8Ω
with 10% THD+N max and 5V power supply
■ Output power: 2.2W @5V or 0.7W @ 3.0V into
4Ω with 1% THD+N max.
■ Output power: 1.4W @5V or 0.5W @ 3.0V into
8Ω with 1% THD+N max.
■ Adjustable gain via external resistors
■ Low current consumption 2mA @ 3V
■ Efficiency: 88% typ.
TS4962IQT - Pinout
■ Signal to noise ratio: 85dB typ.
■ PSRR: 63dB typ. @217Hz with 6dB gain
■ PWM base frequency: 280kHz
■ Low pop & click noise
■ Thermal shutdown protection
■ Available in DFN8 3X3 mm package
Description
The TS4962 is a differential class-D BTL power
amplifier. It is able to drive up to 2.2W into a 4Ω
load and 1.4W into a 8Ω load at 5V. It achieves
outstanding efficiency (88% typ.) compared to
standard AB-class audio amps.
Applications
The gain of the device can be controlled via two
external gain-setting resistors. Pop & click
reduction circuitry provides low on/off switch noise
while allowing the device to start within 5ms. A
standby function (active low) allows the reduction
of current consumption to 10nA typ.
■ Cellular phone
■ PDA
■ Notebook PC
January 2007
Rev 7
1/46
www.st.com
1
Contents
TS4962
Contents
1
2
3
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 6
Application component information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1
3.2
Electrical characteristics tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
Differential configuration principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Gain in typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Common mode feedback loop limitations . . . . . . . . . . . . . . . . . . . . . . . . . 33
Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Decoupling of the circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Wake-up time (tWU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Shutdown time (tSTBY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Consumption in standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Single-ended input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.10 Output filter considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.11 Several examples with summed inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Example 1: Dual differential inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Example 2: One differential input plus one single ended input . . . . . . . . . . . . . . . 38
5
6
7
8
9
Demo board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
DFN8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
2/46
List of tables
TS4962
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Dissipation ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Component information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical characteristics at V = +5V, with GND = 0V, V
= 2.5V, and T
= 25°C
CC
icm
amb
(unless otherwise specified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical characteristics at V = +4.2V with GND = 0V, V = 2.1V, and T = 25°C
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
CC
icm
amb
(unless otherwise specified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Electrical characteristics at V = +3.6V with GND = 0V, V = 1.8V, T = 25°C
CC
icm
amb
(unless otherwise specified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical characteristics at V = +3.0V with GND = 0V, V = 1.5V, T = 25°C
CC
icm
amb
(unless otherwise specified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electrical characteristics at V = +2.5V with GND = 0V, V = 1.25V, T = 25°C
CC
icm
amb
(unless otherwise specified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical characteristics at V +2.4V with GND = 0V, V = 1.2V, T = 25°C
CC
icm
amb
(unless otherwise specified) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 11.
Table 12.
2/46
List of figures
TS4962
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Schematic used for test measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Schematic used for PSSR measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Current consumption vs. power supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Current consumption vs. standby voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Output offset voltage vs. common mode input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Efficiency vs. output power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Efficiency vs. output power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 10. Efficiency vs. output power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 11. Efficiency vs. output power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 12. Output power vs. power supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 13. Output power vs. power supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 14. PSRR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 15. PSRR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 16. PSRR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 17. PSRR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 18. PSRR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 19. PSRR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 20. PSRR vs. common mode input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 21. CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 22. CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 23. CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 24. CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 25. CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 26. CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 27. CMRR vs. common mode input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 28. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 29. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 30. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 31. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 32. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 33. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 34. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 35. THD+N vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 36. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 37. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 38. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 39. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 40. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 41. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 42. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 43. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 44. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 45. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 46. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 47. THD+N vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 48. Gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 49. Gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2/46
TS4962
List of figures
Figure 50. Gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 51. Gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 52. Gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 53. Gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 54. Gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 55. Startup & shutdown time V = 5V, G = 6dB, C = 1µF (5ms/div) . . . . . . . . . . . . . . . . . . . 30
CC
in
Figure 56. Startup & shutdown time V = 3V, G = 6dB, C = 1µF (5ms/div) . . . . . . . . . . . . . . . . . . . 30
CC
in
Figure 57. Startup & shutdown time V = 5V, G = 6dB, C = 100nF (5ms/div) . . . . . . . . . . . . . . . . . 30
CC
in
Figure 58. Startup & shutdown time V = 3V, G = 6dB, C = 100nF (5ms/div) . . . . . . . . . . . . . . . . . 31
CC
in
Figure 59. Startup & shutdown time V = 5V, G = 6dB, No C (5ms/div) . . . . . . . . . . . . . . . . . . . . . 31
CC
in
Figure 60. Startup & shutdown time V = 3V, G = 6dB, No C (5ms/div) . . . . . . . . . . . . . . . . . . . . . 31
CC
in
Figure 61. Single-ended input typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 62. Typical application schematic with multiple single-ended inputs . . . . . . . . . . . . . . . . . . . . 35
Figure 63. Method for shorting pertubations to ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 64. Typical application schematic with dual differential inputs . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 65. Typical application schematic with one differential input plus one single-ended input . . . . 38
Figure 66. Schematic diagram of mono class D demoboard for the TS4962 DFN package . . . . . . . . 39
Figure 67. Top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 68. Bottom layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 69. Top layer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 70. Recommended footprint for TS4962 DFN package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 71. DFN8 3x3 exposed pad package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3/46
Absolute maximum ratings and operating conditions
TS4962
1
Absolute maximum ratings and operating conditions
Table 1.
Symbol
Absolute maximum ratings
Parameter
Value
Unit
VCC
Vi
Supply voltage(1), (2)
6
V
V
Input voltage (3)
GND to VCC
-40 to + 85
-65 to +150
150
Toper
Tstg
Tj
Operating free air temperature range
Storage temperature
°C
°C
°C
Maximum junction temperature
Thermal resistance junction to ambient
DFN8 package
Rthja
120
°C/W
Pd
ESD
Power dissipation
Internally limited(4)
Human body model
2
200
kV
V
ESD
Machine model
Latch-up
VSTBY
Latch-up immunity
200
mA
V
Standby pin voltage maximum voltage (5)
GND to VCC
260
Lead temperature (soldering, 10sec)
°C
1. Caution: This device is not protected in the event of abnormal operating conditions such as, for example,
short-circuiting between any one output pin and ground, between any one output pin and VCC, and
between individual output pins.
2. All voltage values are measured with respect to the ground pin.
3. The magnitude of the input signal must never exceed VCC + 0.3V / GND - 0.3V.
4. Exceeding the power derating curves during a long period will provoke abnormal operation.
5. The magnitude of the standby signal must never exceed VCC + 0.3V / GND - 0.3V.
Table 2.
Package
DFN8
Dissipation ratings
Derating factor
Power rating @25°C
Power rating @ 85°C
20 mW / °C
2.5 W
1.3 W
6/46
TS4962
Absolute maximum ratings and operating conditions
Table 3.
Symbol
Operating conditions
Parameter
Value
Unit
VCC
VIC
Supply voltage(1)
2.4 to 5.5
V
V
Common mode input voltage range(2)
0.5 to VCC-0.8
Standby voltage input: (3)
Device ON
VSTBY
1.4 ≤VSTBY ≤ VCC
V
GND ≤ VSTBY ≤ 0.4 (4)
Device OFF
RL
Load resistor
≥ 4
Ω
Thermal resistance junction to ambient
DFN8 package(5)
Rthja
50
°C/W
1. For VCC between 2.4V and 2.5V, the operating temperature range is reduced to 0°C ≤Tamb ≤70°C.
2. For VCC between 2.4V and 2.5V, the common mode input range must be set at VCC/2.
3. Without any signal on VSTBY, the device will be in standby.
4. Minimum current consumption is obtained when VSTBY = GND.
5. When mounted on a 4-layer PCB.
7/46
Application component information
TS4962
2
Application component information
Table 4.
Component information
Component
Functional description
Bypass supply capacitor. Install as close as possible to the TS4962 to
C
minimize high-frequency ripple. A 100nF ceramic capacitor should be added
to enhance the power supply filtering at high frequency.
S
Input resistor used to program the TS4962 differential gain (Gain = 300kΩ/Rin
with Rin in kΩ).
Rin
Because of common mode feedback these input capacitors are optional.
However, they can be added to form with Rin a 1st order high pass filter with
-3dB cut-off frequency = 1/(2*π*Rin*Cin).
Input capacitor
Figure 1.
Typical application schematics
Vcc
6
Cs
1u
Vcc
Vcc
In+
Stdby
1
Internal
Bias
Out+
GND
150k
GND
5
8
Rin
Rin
GND
Differential
Input
+
-
4
3
Output
H
-
In-
In+
PWM
+
Bridge
SPEAKER
In-
Input
capacitors
are optional
150k
Oscillator
Out-
GND
7
GND
GND
Vcc
6
Cs
1u
Vcc
Vcc
In+
Stdby
1
Internal
Bias
4 Ohms LC Output Filter
15µH
Out+
GND
150k
GND
5
8
Rin
Rin
GND
Differential
+
-
4
Output
H
-
2µF
In-
In+
PWM
Input
In-
+
GND
Bridge
Load
3
2µF
15µH
Input
capacitors
are optional
150k
Oscillator
Out-
GND
7
GND
30µH
GND
1µF
GND
1µF
30µH
8 Ohms LC Output Filter
8/46
TS4962
Electrical characteristics
3
Electrical characteristics
3.1
Electrical characteristics tables
Table 5.
Electrical characteristics at V = +5V,
CC
with GND = 0V, V
= 2.5V, and T
= 25°C (unless otherwise specified)
icm
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
2.3
3.3
mA
No input signal, no load
Standby current (1)
ISTBY
10
3
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
Voo
mV
No input signal, RL = 8Ω
Output power, G=6dB
2.2
2.8
1.4
1.7
THD = 1% Max, f = 1kHz, RL = 4Ω
THD = 10% Max, f = 1kHz, RL = 4Ω
THD = 1% Max, f = 1kHz, RL = 8Ω
THD = 10% Max, f = 1kHz, RL = 8Ω
Pout
W
Total harmonic distortion + noise
Pout = 850 mWRMS, G = 6dB, 20Hz < f < 20kHz
THD + N
Efficiency
2
%
%
RL = 8Ω + 15µH, BW < 30kHz
Pout = 1WRMS, G = 6dB, f = 1kHz
RL = 8Ω + 15µH, BW < 30kHz
0.4
Efficiency
78
88
Pout = 2 WRMS, RL = 4Ω + ≥ 15µH
Pout =1.2 WRMS, RL = 8Ω+ ≥ 15µH
Power supply rejection ratio with inputs grounded (2)
PSRR
CMRR
Gain
63
57
dB
dB
f = 217Hz, RL = 8Ω, G=6dB, Vripple = 200mVpp
Common mode rejection ratio
f = 217Hz, RL = 8Ω, G = 6dB, ΔVic = 200mVpp
273kΩ
300kΩ
327kΩ
-----------------
-----------------
-----------------
Gain value (Rin in kΩ)
V/V
R
R
R
in
in
in
RSTBY
FPWM
Internal resistance from standby to GND
Pulse width modulator base frequency
Signal to noise ratio (A weighting),
273
200
300
280
327
360
kΩ
kHz
SNR
85
dB
Pout = 1.2W, RL = 8Ω
tWU
Wake-up time
Standby time
5
5
10
10
ms
ms
tSTBY
9/46
Electrical characteristics
Table 5.
TS4962
Electrical characteristics at V = +5V,
CC
with GND = 0V, V
= 2.5V, and T
= 25°C (unless otherwise specified)
icm
amb
(continued)
Symbol
Parameter
Min.
Typ.
Max.
Unit
VN
Output voltage noise f = 20Hz to 20kHz, G = 6dB
Unweighted RL = 4Ω
A-weighted RL = 4Ω
85
60
Unweighted RL = 8Ω
A-weighted RL = 8Ω
86
62
Unweighted RL = 4Ω+ 15µH
A-weighted RL = 4Ω + 15µH
83
60
μVRMS
Unweighted RL = 4Ω+ 30µH
A-weighted RL = 4Ω + 30µH
88
64
Unweighted RL = 8Ω+ 30µH
A-weighted RL = 8Ω + 30µH
78
57
Unweighted RL = 4Ω+ Filter
A-weighted RL = 4Ω + Filter
Unweighted RL = 4Ω+ Filter
A-weighted RL = 4Ω + Filter
87
65
82
59
1. Standby mode is active when VSTBY is tied to GND.
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to
VCC @ f = 217Hz.
10/46
TS4962
Electrical characteristics
Table 6.
Electrical characteristics at V = +4.2V with GND = 0V, V
= 2.1V, and
icm
CC
(1)
T
= 25°C (unless otherwise specified)
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
2.1
3
mA
No input signal, no load
Standby current (2)
ISTBY
10
3
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
Voo
mV
No input signal, RL = 8Ω
Output power, G=6dB
1.5
1.95
0.9
THD = 1% Max, f = 1kHz, RL = 4Ω
THD = 10% Max, f = 1kHz, RL = 4Ω
THD = 1% Max, f = 1kHz, RL = 8Ω
THD = 10% Max, f = 1kHz, RL = 8Ω
Pout
W
1.1
Total harmonic distortion + noise
Pout = 600 mWRMS, G = 6dB, 20Hz < f < 20kHz
RL = 8Ω + 15µH, BW < 30kHz
THD + N
Efficiency
2
%
%
Pout = 700mWRMS, G = 6dB, f = 1kHz
RL = 8Ω + 15µH, BW < 30kHz
0.35
Efficiency
78
88
Pout = 1.45 WRMS, RL = 4Ω + ≥ 15µH
Pout = 0.9 WRMS, RL = 8Ω+ ≥ 15µH
Power supply rejection ratio with inputs grounded (3)
PSRR
CMRR
Gain
dB
dB
f = 217Hz, RL = 8Ω, G=6dB, Vripple = 200mVpp
63
57
Common mode rejection ratio
f = 217Hz, RL = 8Ω, G = 6dB, ΔVic = 200mVpp
273kΩ
300kΩ
327kΩ
-----------------
-----------------
-----------------
Gain value (Rin in kΩ)
V/V
R
R
R
in
in
in
RSTBY Internal resistance from standby to GND
273
200
300
280
327
360
kΩ
FPWM
SNR
Pulse width modulator base frequency
kHz
Signal to noise ratio (A-weighting)
85
dB
Pout = 0.8W, RL = 8Ω
tWU
Wake-up time
Standby time
5
5
10
10
ms
ms
tSTBY
11/46
Electrical characteristics
Table 6.
TS4962
Electrical characteristics at V = +4.2V with GND = 0V, V
= 2.1V, and
icm
CC
(1)
T
= 25°C (unless otherwise specified) (continued)
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
VN
Output voltage noise f = 20Hz to 20kHz, G = 6dB
85
60
Unweighted RL = 4Ω
A-weighted RL = 4Ω
86
62
Unweighted RL = 8Ω
A-weighted RL = 8Ω
83
60
Unweighted RL = 4Ω + 15µH
A-weighted RL = 4Ω + 15µH
μVRMS
88
64
Unweighted RL = 4Ω + 30µH
A-weighted RL = 4Ω + 30µH
78
57
Unweighted RL = 8Ω + 30µH
A-weighted RL = 8Ω + 30µH
87
65
82
59
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
1. All electrical values are guaranteed with correlation measurements at 2.5V and 5V.
2. Standby mode is active when VSTBY is tied to GND.
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to
VCC @ f = 217Hz.
12/46
TS4962
Electrical characteristics
Table 7.
Electrical characteristics at V = +3.6V
CC
(1)
with GND = 0V, V
= 1.8V, T
= 25°C (unless otherwise specified)
icm
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
2
2.8
mA
No input signal, no load
Standby current (2)
ISTBY
10
3
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
Voo
mV
No input signal, RL = 8Ω
Output power, G=6dB
1.1
1.4
THD = 1% Max, f = 1kHz, RL = 4Ω
THD = 10% Max, f = 1kHz, RL = 4Ω
THD = 1% Max, f = 1kHz, RL = 8Ω
THD = 10% Max, f = 1kHz, RL = 8Ω
Pout
W
0.7
0.85
Total harmonic distortion + noise
Pout = 450 mWRMS, G = 6dB, 20Hz < f < 20kHz
RL = 8Ω + 15µH, BW < 30kHz
THD + N
Efficiency
2
%
%
Pout = 500mWRMS, G = 6dB, f = 1kHz
RL = 8Ω + 15µH, BW < 30kHz
0.1
Efficiency
78
88
Pout = 1 WRMS, RL = 4Ω + ≥ 15µH
Pout = 0.65 WRMS, RL = 8Ω+ ≥ 15µH
Power supply rejection ratio with inputs grounded (3)
PSRR
CMRR
Gain
62
56
dB
dB
f = 217Hz, RL = 8Ω, G=6dB, Vripple = 200mVpp
Common mode rejection ratio
f = 217Hz, RL = 8Ω, G = 6dB, ΔVic = 200mVpp
273kΩ
300kΩ
327kΩ
-----------------
-----------------
-----------------
Gain value (Rin in kΩ)
V/V
R
R
R
in
in
in
RSTBY Internal resistance from standby to GND
273
200
300
280
327
360
kΩ
FPWM
SNR
Pulse width modulator base frequency
kHz
Signal to noise ratio (A-weighting)
83
dB
Pout = 0.6W, RL = 8Ω
tWU
Wake-up time
Standby time
5
5
10
10
ms
ms
tSTBY
13/46
Electrical characteristics
Table 7.
TS4962
Electrical characteristics at V = +3.6V
CC
(1)
with GND = 0V, V
= 1.8V, T
= 25°C (unless otherwise specified)
icm
amb
(continued)
Symbol
Parameter
Min.
Typ.
Max.
Unit
VN
Output voltage noise f = 20Hz to 20kHz, G = 6dB
83
57
Unweighted RL = 4Ω
A-weighted RL = 4Ω
83
61
Unweighted RL = 8Ω
A-weighted RL = 8Ω
81
58
Unweighted RL = 4Ω + 15µH
A-weighted RL = 4Ω+ 15µH
μVRMS
87
62
Unweighted RL = 4Ω + 30µH
A-weighted RL = 4Ω+ 30µH
77
56
Unweighted RL = 8Ω + 30µH
A-weighted RL = 8Ω+ 30µH
85
63
80
57
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω+ Filter
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω+ Filter
1. All electrical values are guaranteed with correlation measurements at 2.5V and 5V.
2. Standby mode is actived when VSTBY is tied to GND.
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to
VCC @ f = 217Hz.
14/46
TS4962
Electrical characteristics
Table 8.
Electrical characteristics at V = +3.0V
CC
(1)
with GND = 0V, V
= 1.5V, T
= 25°C (unless otherwise specified)
icm
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
1.9
2.7
mA
No input signal, no load
Standby current (2)
ISTBY
10
3
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
Voo
mV
No input signal, RL = 8Ω
Output power, G=6dB
0.7
1
THD = 1% Max, f = 1kHz, RL = 4Ω
THD = 10% Max, f = 1kHz, RL = 4Ω
THD = 1% Max, f = 1kHz, RL = 8Ω
THD = 10% Max, f = 1kHz, RL = 8Ω
Pout
W
0.5
0.6
Total harmonic distortion + noise
Pout = 300 mWRMS, G = 6dB, 20Hz < f < 20kHz
RL = 8Ω + 15µH, BW < 30kHz
THD + N
2
%
%
Pout = 350mWRMS, G = 6dB, f = 1kHz
RL = 8Ω + 15µH, BW < 30kHz
0.1
Efficiency
Efficiency Pout = 0.7 WRMS, RL = 4Ω + ≥ 15µH
Pout = 0.45 WRMS, RL = 8Ω+ ≥ 15µH
78
88
Power supply rejection ratio with inputs grounded (3)
PSRR
dB
dB
f = 217Hz, RL = 8Ω, G=6dB, Vripple = 200mVpp
60
54
Common mode rejection ratio
CMRR
f = 217Hz, RL = 8Ω, G = 6dB, ΔVic = 200mVpp
273kΩ
300kΩ
327kΩ
-----------------
-----------------
-----------------
Gain
Gain value (Rin in kΩ)
V/V
R
R
R
in
in
in
RSTBY Internal resistance from standby to GND
273
200
300
280
327
360
kΩ
FPWM
SNR
Pulse width modulator base frequency
Signal to noise ratio (A-weighting)
kHz
82
dB
Pout = 0.4W, RL = 8Ω
tWU
Wake-up time
Standby time
5
5
10
10
ms
ms
tSTBY
15/46
Electrical characteristics
Table 8.
TS4962
Electrical characteristics at V = +3.0V
CC
(1)
with GND = 0V, V
= 1.5V, T
= 25°C (unless otherwise specified)
icm
amb
(continued)
Symbol
Parameter
Min.
Typ.
Max.
Unit
VN
Output voltage noise f = 20Hz to 20kHz, G = 6dB
83
57
Unweighted RL = 4Ω
A-weighted RL = 4Ω
83
61
Unweighted RL = 8Ω
A-weighted RL = 8Ω
81
58
Unweighted RL = 4Ω + 15µH
A-weighted RL = 4Ω + 15µH
μVRMS
87
62
Unweighted RL = 4Ω + 30µH
A-weighted RL = 4Ω + 30µH
77
56
Unweighted RL = 8Ω + 30µH
A-weighted RL = 8Ω + 30µH
85
63
80
57
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
1. All electrical values are guaranteed with correlation measurements at 2.5V and 5V.
2. Standby mode is active when VSTBY is tied to GND.
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to
VCC @ f = 217Hz.
16/46
TS4962
Electrical characteristics
Table 9.
Electrical characteristics at V = +2.5V
CC
with GND = 0V, V
= 1.25V, T
= 25°C (unless otherwise specified)
icm
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
1.7
2.4
mA
No input signal, no load
Standby current (1)
ISTBY
10
3
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
Voo
mV
No input signal, RL = 8Ω
Output power, G=6dB
0.5
THD = 1% Max, f = 1kHz, RL = 4Ω
THD = 10% Max, f = 1kHz, RL = 4Ω
THD = 1% Max, f = 1kHz, RL = 8Ω
THD = 10% Max, f = 1kHz, RL = 8Ω
Pout
0.65
0.33
0.41
W
Total harmonic distortion + noise
Pout = 180 mWRMS, G = 6dB, 20Hz < f < 20kHz
THD + N
Efficiency
1
%
%
RL = 8Ω + 15µH, BW < 30kHz
Pout = 200mWRMS, G = 6dB, f = 1kHz
RL = 8Ω + 15µH, BW < 30kHz
0.05
Efficiency
78
88
Pout = 0.47 WRMS, RL = 4Ω + ≥ 15µH
Pout = 0.3 WRMS, RL = 8Ω+ ≥ 15µH
Power supply rejection ratio with inputs grounded (2)
PSRR
CMRR
Gain
60
54
dB
dB
f = 217Hz, RL = 8Ω, G=6dB, Vripple = 200mVpp
Common mode rejection ratio
f = 217Hz, RL = 8Ω, G = 6dB, ΔVic = 200mVpp
273kΩ
300kΩ
327kΩ
-----------------
-----------------
-----------------
Gain value (Rin in kΩ)
V/V
R
R
R
in
in
in
RSTBY Internal resistance from standby to GND
273
200
300
280
327
360
kΩ
FPWM
SNR
Pulse width modulator base frequency
kHz
Signal to noise ratio (A-weighting)
80
dB
Pout = 0.3W, RL = 8Ω
tWU
Wake-up time
Standby time
5
5
10
10
ms
ms
tSTBY
17/46
Electrical characteristics
Table 9.
TS4962
Electrical characteristics at V = +2.5V
CC
with GND = 0V, V
= 1.25V, T
= 25°C (unless otherwise specified)
icm
amb
(continued)
Symbol
Parameter
Min.
Typ.
Max.
Unit
VN
Output voltage noise f = 20Hz to 20kHz, G = 6dB
85
60
Unweighted RL = 4Ω
A-weighted RL = 4Ω
86
62
Unweighted RL = 8Ω
A-weighted RL = 8Ω
76
56
Unweighted RL = 4Ω + 15µH
A-weighted RL = 4Ω + 15µH
μVRMS
82
60
Unweighted RL = 4Ω + 30µH
A-weighted RL = 4Ω + 30µH
67
53
Unweighted RL = 8Ω + 30µH
A-weighted RL = 8Ω + 30µH
78
57
74
54
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
1. Standby mode is active when VSTBY is tied to GND.
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinusoidal signal to
VCC @ f = 217Hz.
18/46
TS4962
Electrical characteristics
Table 10. Electrical characteristics at V +2.4V
CC
with GND = 0V, V
= 1.2V, T
= 25°C (unless otherwise specified)
icm
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
1.7
mA
No input signal, no load
Standby current (1)
ISTBY
10
3
nA
No input signal, VSTBY = GND
Output offset voltage
Voo
mV
No input signal, RL = 8Ω
Output power, G=6dB
THD = 1% Max, f = 1kHz, RL = 4Ω
THD = 10% Max, f = 1kHz, RL = 4Ω
THD = 1% Max, f = 1kHz, RL = 8Ω
THD = 10% Max, f = 1kHz, RL = 8Ω
0.42
0.61
0.3
Pout
W
0.38
Total harmonic distortion + noise
THD + N
Efficiency
P
out = 150 mWRMS, G = 6dB, 20Hz < f < 20kHz
1
%
%
RL = 8Ω + 15µH, BW < 30kHz
Efficiency
77
86
Pout = 0.38 WRMS, RL = 4Ω + ≥ 15µH
Pout = 0.25 WRMS, RL = 8Ω+ ≥ 15µH
Common mode rejection ratio
CMRR
Gain
54
dB
f = 217Hz, RL = 8Ω, G = 6dB, ΔVic = 200mVpp
300kΩ
327kΩ
273kΩ
-----------------
-----------------
-----------------
Gain value (Rin in kΩ)
V/V
R
R
R
in
in
in
RSTBY
FPWM
Internal resistance from standby to GND
Pulse width modulator base frequency
Signal to noise ratio (A-weighting)
273
300
280
327
kΩ
kHz
SNR
80
dB
Pout = 0.25W, RL = 8Ω
tWU
Wake-up time
Standby time
5
5
ms
ms
tSTBY
19/46
Electrical characteristics
TS4962
Table 10. Electrical characteristics at V +2.4V
CC
with GND = 0V, V
= 1.2V, T
= 25°C (unless otherwise specified)
icm
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
VN
Output voltage noise f = 20Hz to 20kHz, G = 6dB
Unweighted RL = 4Ω
A-weighted RL = 4Ω
85
60
Unweighted RL = 8Ω
A-weighted RL = 8Ω
86
62
Unweighted RL = 4Ω + 15µH
A-weighted RL = 4Ω + 15µH
76
56
μVRMS
Unweighted RL = 4Ω + 30µH
A-weighted RL = 4Ω + 30µH
82
60
Unweighted RL = 8Ω + 30µH
A-weighted RL = 8Ω + 30µH
67
53
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
Unweighted RL = 4Ω + Filter
A-weighted RL = 4Ω + Filter
78
57
74
54
1. Standby mode is active when VSTBY is tied to GND.
20/46
TS4962
Electrical characteristics
3.2
Electrical characteristics curves
The graphs shown in this section use the following abbreviations:
●
R + 15μH or 30μH = pure resistor+ very low series resistance inductor
L
●
Filter = LC output filter (1µF+30µH for 4Ω and 0.5µF+60µH for 8Ω)
All measurements are done with C =1µF and C =100nF (see Figure 2), except for the
S1
S2
PSRR where C is removed (see Figure 3).
S1
Figure 2.
Schematic used for test measurements
Vcc
1uF
Cs1
100nF
Cs2
+
GND GND
In+
Cin
Cin
Rin
Out+
4 or 8 Ohms
RL
15uH or 30uH
or
5th order
50kHz low pass
filter
150k
TS4962
Rin
LC Filter
In-
Out-
150k
GND
Audio Measurement
Bandwidth < 30kHz
Figure 3.
Schematic used for PSSR measurements
100nF
Cs2
20Hz to 20kHz
Vcc
GND
GND
4.7uF
Rin
Out+
4 or 8 Ohms
In+
15uH or 30uH
or
5th order
150k
TS4962
50kHz low pass
filter
RL
4.7uF
Rin
LC Filter
In-
Out-
150k
GND
GND
5th order
50kHz low pass
filter
RMS Selective Measurement
Bandwidth=1% of Fmeas
Reference
21/46
Electrical characteristics
TS4962
Figure 4.
Current consumption vs. power
supply voltage
Figure 5. Current consumption vs. standby
voltage
2.5
2.0
1.5
1.0
0.5
0.0
2.5
2.0
1.5
1.0
0.5
0.0
No load
Tamb=25
°
C
Vcc = 5V
No load
Tamb=25°C
0
1
2
3
4
5
0
1
2
3
4
5
Standby Voltage (V)
Power Supply Voltage (V)
Figure 6.
Current consumption vs. standby Figure 7.
voltage
Output offset voltage vs. common
mode input voltage
2.0
1.5
1.0
0.5
0.0
10
8
G = 6dB
Tamb = 25°C
6
Vcc=5V
Vcc=3.6V
4
2
Vcc = 3V
No load
Tamb=25
Vcc=2.5V
°C
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0.0
0.5
1.0
1.5
2.0
2.5 3.0
Common Mode Input Voltage (V)
Standby Voltage (V)
Figure 8.
Efficiency vs. output power
Figure 9.
Efficiency vs. output power
100
100
80
60
40
20
0
200
150
100
50
600
500
400
300
200
100
0
Efficiency
Efficiency
80
60
40
20
Power
Dissipation
Power
Dissipation
Vcc=3V
RL=4
F=1kHz
Vcc=5V
RL=4
F=1kHz
THD+N
Ω
+ ≥ 15μH
Ω
+ ≥ 15μH
THD+N
≤
1%
≤1%
0
0.0
0
0.7
0.5
1.0
1.5
2.0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
2.2
Output Power (W)
Output Power (W)
22/46
TS4962
Electrical characteristics
Figure 10. Efficiency vs. output power
Figure 11. Efficiency vs. output power
100
80
60
40
20
0
75
50
25
0
100
150
100
50
80
Efficiency
Efficiency
60
40
Power
Dissipation
Power
Dissipation
Vcc=3V
RL=8
F=1kHz
Vcc=5V
RL=8
F=1kHz
20
Ω
+
≥
15μH
Ω
+
≥
15
μH
THD+N
≤
1%
THD+N
≤
1%
0
0.0
0
1.4
0.2
0.4
0.6
0.8
1.0
1.2
0.0
0.1
0.2
0.3
0.4
0.5
Output Power (W)
Output Power (W)
Figure 12. Output power vs. power supply
voltage
Figure 13. Output power vs. power supply
voltage
3.5
2.0
RL = 8Ω + ≥ 15μH
F = 1kHz
BW < 30kHz
Tamb = 25°C
RL = 4
F = 1kHz
BW < 30kHz
Tamb = 25
Ω + ≥ 15μH
3.0
2.5
2.0
1.5
1.0
0.5
0.0
THD+N=10%
°C
1.5
1.0
0.5
0.0
THD+N=10%
THD+N=1%
THD+N=1%
4.5
2.5
3.0
3.5
4.0
5.0
5.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
Vcc (V)
Figure 14. PSRR vs. frequency
Figure 15. PSRR vs. frequency
0
0
Vripple = 200mVpp
Inputs = Grounded
Vripple = 200mVpp
Inputs = Grounded
-10
-10
G = 6dB, Cin = 4.7
RL = 4 + 15
R/R 0.1%
Tamb = 25
μ
F
G = 6dB, Cin = 4.7
RL = 4 + 30
R/R 0.1%
Tamb = 25
μF
-20
-30
-40
-50
-60
-70
-80
-20
-30
-40
-50
-60
-70
-80
Ω
μ
H
Ω
μH
Δ
≤
Δ
≤
°
C
°C
Vcc=5V, 3.6V, 2.5V
Vcc=5V, 3.6V, 2.5V
20
100
1000
Frequency (Hz)
10000
20
100
1000
Frequency (Hz)
10000
20k
20k
23/46
Electrical characteristics
TS4962
Figure 16. PSRR vs. frequency
Figure 17. PSRR vs. frequency
0
0
Vripple = 200mVpp
Inputs = Grounded
Vripple = 200mVpp
Inputs = Grounded
-10
-10
G = 6dB, Cin = 4.7
RL = 4 + Filter
R/R 0.1%
Tamb = 25
μ
F
G = 6dB, Cin = 4.7
RL = 8 + 15
R/R 0.1%
Tamb = 25
μF
-20
-30
-40
-50
-60
-70
-80
-20
-30
-40
-50
-60
-70
-80
Ω
Ω
μH
Δ
≤
Δ
≤
°C
°C
Vcc=5V, 3.6V, 2.5V
Vcc=5V, 3.6V, 2.5V
20
100
1000
10000
20
100
1000
10000
20k
20k
20k
20k
Frequency (Hz)
Frequency (Hz)
Figure 18. PSRR vs. frequency
Figure 19. PSRR vs. frequency
0
0
Vripple = 200mVpp
Inputs = Grounded
Vripple = 200mVpp
Inputs = Grounded
-10
-10
G = 6dB, Cin = 4.7
RL = 8 + 30
R/R 0.1%
Tamb = 25
μ
F
G = 6dB, Cin = 4.7
RL = 8 + Filter
R/R 0.1%
Tamb = 25
μF
-20
-30
-40
-50
-60
-70
-80
-20
-30
-40
-50
-60
-70
-80
Ω
μ
H
Ω
Δ
≤
Δ
≤
°
C
°C
Vcc=5V, 3.6V, 2.5V
Vcc=5V, 3.6V, 2.5V
20
100
1000
10000
20
100
1000
10000
20k
Frequency (Hz)
Frequency (Hz)
Figure 20. PSRR vs. common mode input voltage Figure 21. CMRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
0
-20
-40
-60
Vripple = 200mVpp
F = 217Hz, G = 6dB
RL=4
G=6dB
Ω + 15μH
RL
≥ 4Ω + ≥ 15μH
Vcc=2.5V
Δ
Δ
Vicm=200mVpp
R/R 0.1%
Tamb = 25
°C
≤
Cin=4.7
Tamb = 25
μF
Vcc=5V, 3.6V, 2.5V
°C
Vcc=3.6V
Vcc=5V
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
100
1000
10000
20
Frequency (Hz)
Common Mode Input Voltage (V)
24/46
TS4962
Electrical characteristics
Figure 22. CMRR vs. frequency
Figure 23. CMRR vs. frequency
0
0
-20
-40
-60
RL=4
G=6dB
Ω
+ 30
μ
H
RL=4
Ω + Filter
G=6dB
Δ
Δ
Vicm=200mVpp
R/R 0.1%
Δ
Δ
Vicm=200mVpp
R/R 0.1%
-20
-40
-60
≤
≤
Cin=4.7
Tamb = 25
μF
Cin=4.7
Tamb = 25°C
μF
Vcc=5V, 3.6V, 2.5V
Vcc=5V, 3.6V, 2.5V
°C
100
1000
10000
100
1000
10000
20k
20
20k
20
Frequency (Hz)
Frequency (Hz)
Figure 24. CMRR vs. frequency
Figure 25. CMRR vs. frequency
0
0
RL=8
Ω
+ 15
μH
RL=8
Ω + 30μH
G=6dB
G=6dB
Δ
Δ
Vicm=200mVpp
R/R 0.1%
Δ
Δ
Vicm=200mVpp
R/R 0.1%
-20
-40
-60
-20
-40
-60
≤
≤
Cin=4.7
Tamb = 25
μF
Cin=4.7
Tamb = 25°C
μF
Vcc=5V, 3.6V, 2.5V
Vcc=5V, 3.6V, 2.5V
°C
100
1000
10000
100
1000
10000
20k
20
20k
20
Frequency (Hz)
Frequency (Hz)
Figure 26. CMRR vs. frequency
Figure 27. CMRR vs. common mode input
voltage
-20
0
Δ
Vicm = 200mVpp
RL=8
G=6dB
Ω + Filter
F = 217Hz
G = 6dB
RL
-30
-40
-50
-60
-70
Δ
Δ
Vicm=200mVpp
R/R 0.1%
Vcc=2.5V
≥ 4Ω + ≥ 15μH
-20
-40
-60
≤
Tamb = 25
°C
Cin=4.7
Tamb = 25
μF
Vcc=5V, 3.6V, 2.5V
°C
Vcc=3.6V
Vcc=5V
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
100
1000
10000
20
20k
Frequency (Hz)
Common Mode Input Voltage (V)
25/46
Electrical characteristics
TS4962
Figure 28. THD+N vs. output power
Figure 29. THD+N vs. output power
10
10
Vcc=5V
Vcc=5V
RL = 4
Ω
+ 15
μH
RL = 4Ω + 30μH or Filter
F = 100Hz
G = 6dB
BW < 30kHz
F = 100Hz
G = 6dB
BW < 30kHz
Tamb = 25°C
Vcc=3.6V
Vcc=2.5V
Vcc=3.6V
Vcc=2.5V
1
0.1
1
0.1
Tamb = 25
°C
0.01
1E-3
0.01
1E-3
0.01
0.1
1
0.01
0.1
1
3
3
Output Power (W)
Output Power (W)
Figure 30. THD+N vs. output power
Figure 31. THD+N vs. output power
10
10
RL = 8
Ω
+ 15
μH
RL = 8Ω + 30μH or Filter
Vcc=5V
Vcc=5V
F = 100Hz
G = 6dB
F = 100Hz
G = 6dB
Vcc=3.6V
Vcc=3.6V
BW < 30kHz
BW < 30kHz
Tamb = 25°C
Vcc=2.5V
Vcc=2.5V
1
0.1
1
0.1
Tamb = 25
°C
0.01
1E-3
0.01
1E-3
0.01
0.1
1
0.01
0.1
1
2
2
Output Power (W)
Output Power (W)
Figure 32. THD+N vs. output power
Figure 33. THD+N vs. output power
10
10
RL = 4
Ω
+ 15
μH
RL = 4Ω + 30μH or Filter
Vcc=5V
Vcc=5V
F = 1kHz
F = 1kHz
G = 6dB
G = 6dB
Vcc=3.6V
Vcc=3.6V
BW < 30kHz
Tamb = 25
BW < 30kHz
Tamb = 25°C
°
C
Vcc=2.5V
Vcc=2.5V
1
1
0.1
0.1
1E-3
0.01
0.1
1
1E-3
0.01
0.1
1
3
3
Output Power (W)
Output Power (W)
26/46
TS4962
Electrical characteristics
Figure 34. THD+N vs. output power
Figure 35. THD+N vs. output power
10
10
RL = 8
F = 1kHz
Ω + 15μH
RL = 8
F = 1kHz
Ω + 30μH or Filter
Vcc=5V
Vcc=5V
G = 6dB
G = 6dB
Vcc=3.6V
Vcc=3.6V
BW < 30kHz
Tamb = 25
BW < 30kHz
Tamb = 25°C
°
C
Vcc=2.5V
Vcc=2.5V
1
1
0.1
0.1
1E-3
0.01
0.1
1
2
1E-3
0.01
0.1
1
2
Output Power (W)
Output Power (W)
Figure 36. THD+N vs. frequency
Figure 37. THD+N vs. frequency
10
10
RL=4
Ω + 30μH or Filter
RL=4
Ω + 15μH
G=6dB
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25°C
Bw < 30kHz
Vcc=5V
Tamb = 25°C
Po=1.4W
1
0.1
1
0.1
Po=1.4W
Po=0.7W
Po=0.7W
0.01
0.01
100
1000
Frequency (Hz)
10000
100
1000
Frequency (Hz)
10000
20k
50
20k
50
Figure 38. THD+N vs. frequency
Figure 39. THD+N vs. frequency
10
10
RL=4
Ω + 15μH
RL=4
Ω + 30μH or Filter
G=6dB
G=6dB
Bw < 30kHz
Vcc=3.6V
Tamb = 25°C
Bw < 30kHz
Vcc=3.6V
Tamb = 25°C
Po=0.85W
1
0.1
1
0.1
Po=0.85W
Po=0.42W
Po=0.42W
0.01
0.01
100
1000
Frequency (Hz)
10000
100
1000
Frequency (Hz)
10000
20k
50
20k
50
27/46
Electrical characteristics
TS4962
Figure 40. THD+N vs. frequency
Figure 41. THD+N vs. frequency
10
10
RL=4
Ω + 30μH or Filter
RL=4
Ω + 15μH
G=6dB
G=6dB
Bw < 30kHz
Vcc=2.5V
Tamb = 25°C
Bw < 30kHz
Vcc=2.5V
Tamb = 25°C
Po=0.35W
1
0.1
1
0.1
Po=0.35W
Po=0.17W
Po=0.17W
0.01
0.01
100
1000
Frequency (Hz)
10000
100
1000
Frequency (Hz)
10000
50
20k
20k
20k
50
20k
20k
20k
Figure 42. THD+N vs. frequency
Figure 43. THD+N vs. frequency
10
10
RL=8
Ω
+ 15
μH
RL=8
Ω + 30μH or Filter
G=6dB
Bw < 30kHz
Vcc=5V
G=6dB
Bw < 30kHz
Vcc=5V
Po=0.85W
Po=0.85W
1
0.1
1
0.1
Tamb = 25
°C
Tamb = 25°C
Po=0.42W
Po=0.42W
0.01
0.01
100
1000
Frequency (Hz)
10000
100
1000
Frequency (Hz)
10000
50
50
Figure 44. THD+N vs. frequency
Figure 45. THD+N vs. frequency
10
10
RL=8
Ω + 15μH
RL=8
Ω + 30μH or Filter
G=6dB
Bw < 30kHz
Vcc=3.6V
G=6dB
Bw < 30kHz
Vcc=3.6V
Po=0.45W
Po=0.45W
1
0.1
1
0.1
Tamb = 25°C
Tamb = 25°C
Po=0.22W
Po=0.22W
0.01
0.01
100
1000
Frequency (Hz)
10000
100
1000
Frequency (Hz)
10000
50
50
28/46
TS4962
Electrical characteristics
Figure 46. THD+N vs. frequency
Figure 47. THD+N vs. frequency
10
10
RL=8
Ω
+ 15
μH
RL=8
Ω + 30μH or Filter
G=6dB
G=6dB
Bw < 30kHz
Vcc=2.5V
Bw < 30kHz
Vcc=2.5V
Tamb = 25°C
1
0.1
1
Tamb = 25
°C
Po=0.18W
Po=0.18W
Po=0.1W
Po=0.1W
0.1
0.01
0.01
100
1000
Frequency (Hz)
10000
100
1000
Frequency (Hz)
10000
20k
50
20k
50
Figure 48. Gain vs. frequency
Figure 49. Gain vs. frequency
8
8
6
6
Vcc=5V, 3.6V, 2.5V
4
Vcc=5V, 3.6V, 2.5V
4
RL=4
G=6dB
Vin=500mVpp
Cin=1
Tamb = 25
Ω + 30μH
RL=4
G=6dB
Vin=500mVpp
Cin=1
Tamb = 25
Ω + 15μH
2
0
2
0
μF
μF
°C
°C
20
100
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
Figure 50. Gain vs. frequency
Figure 51. Gain vs. frequency
8
8
6
6
Vcc=5V, 3.6V, 2.5V
4
Vcc=5V, 3.6V, 2.5V
4
RL=8
G=6dB
Vin=500mVpp
Cin=1
Tamb = 25
Ω + 15μH
RL=4
G=6dB
Vin=500mVpp
Cin=1
Tamb = 25
Ω + Filter
2
0
2
0
μF
μF
°C
°C
20
100
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
29/46
Electrical characteristics
TS4962
Figure 52. Gain vs. frequency
Figure 53. Gain vs. frequency
8
8
6
6
Vcc=5V, 3.6V, 2.5V
4
Vcc=5V, 3.6V, 2.5V
4
RL=8
G=6dB
Vin=500mVpp
Cin=1
Tamb = 25
Ω + Filter
RL=8
G=6dB
Vin=500mVpp
Cin=1
Tamb = 25
Ω + 30μH
2
0
2
0
μF
μF
°C
°C
20
100
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
Figure 54. Gain vs. frequency
Figure 55. Startup & shutdown time
V
= 5V, G = 6dB, C = 1µF (5ms/div)
CC
in
8
Vo1
Vo2
6
Vcc=5V, 3.6V, 2.5V
4
Standby
RL=No Load
G=6dB
Vo1-Vo2
2
Vin=500mVpp
Cin=1μF
Tamb = 25
°C
0
20
100
1000
10000 20k
Frequency (Hz)
Figure 56. Startup & shutdown time
Figure 57. Startup & shutdown time
V
= 3V, G = 6dB, C = 1µF (5ms/div)
V
= 5V, G = 6dB, C = 100nF (5ms/div)
CC
in
CC
in
Vo1
Vo2
Vo1
Vo2
Standby
Standby
Vo1-Vo2
Vo1-Vo2
30/46
TS4962
Electrical characteristics
Figure 58. Startup & shutdown time
Figure 59. Startup & shutdown time
V
= 3V, G = 6dB, C = 100nF (5ms/div)
V
= 5V, G = 6dB, No C (5ms/div)
CC
in
CC
in
Vo1
Vo2
Vo1
Vo2
Standby
Standby
Vo1-Vo2
Vo1-Vo2
Figure 60. Startup & shutdown time
V
= 3V, G = 6dB, No C (5ms/div)
CC
in
Vo1
Vo2
Standby
Vo1-Vo2
31/46
Application information
TS4962
4
Application information
4.1
Differential configuration principle
The TS4962 is a monolithic fully-differential input/output class D power amplifier. The
TS4962 also includes a common-mode feedback loop that controls the output bias value to
average it at V /2 for any DC common mode input voltage. This allows the device to
CC
always have a maximum output voltage swing, and by consequence, maximize the output
power. Moreover, as the load is connected differentially compared to a single-ended
topology, the output is four times higher for the same power supply voltage.
The advantages of a full-differential amplifier are:
●
●
●
High PSRR (power supply rejection ratio).
High common mode noise rejection.
Virtually zero pop without additional circuitry, giving a faster start-up time compared to
conventional single-ended input amplifiers.
●
●
Easier interfacing with differential output audio DAC.
No input coupling capacitors required because of common mode feedback loop.
The main disadvantage is:
●
As the differential function is directly linked to external resistor mismatching, paying
particular attention to this mismatching is mandatory in order to obtain the best
performance from the amplifier.
4.2
Gain in typical application schematic
Typical differential applications are shown in Figure 1 on page 8.
In the flat region of the frequency-response curve (no input coupling capacitor effect), the
differential gain is expressed by the relation:
Out+ – Out-
In+ – In-
300
Rin
AV = ------------------------------ = ---------
diff
with R expressed in kΩ.
in
Due to the tolerance of the internal 150kΩ feedback resistor, the differential gain is in the
range (no tolerance on R ):
in
273
Rin
327
Rin
---------
---------
≤
≤ AV
diff
32/46
TS4962
Application information
4.3
Common mode feedback loop limitations
As explained previously, the common mode feedback loop allows the output DC bias voltage
to be averaged at V /2 for any DC common mode bias input voltage.
CC
However, due to V
limitation in the input stage (see Table 3: Operating conditions on
icm
page 7), the common mode feedback loop can play its role only within a defined range. This
range depends upon the values of V and R (A ). To have a good estimation of the
CC
in
Vdiff
V
value, we can apply this formula (no tolerance on R ):
icm
in
VCC × Rin + 2 × VIC × 150kΩ
-----------------------------------------------------------------------------
Vicm
=
(V)
2 × (Rin + 150kΩ)
with
In+ + In-
---------------------
VIC
=
(V)
2
and the result of the calculation must be in the range:
0.5V ≤ Vicm ≤ VCC – 0.8V
Due to the +/-9% tolerance on the 150kΩ resistor, it’s also important to check V
conditions:
in these
icm
VCC × Rin + 2 × VIC × 136.5kΩ
----------------------------------------------------------------------------------
2 × (Rin + 136.5kΩ)
VCC × Rin + 2 × VIC × 163.5kΩ
----------------------------------------------------------------------------------
2 × (Rin + 163.5kΩ)
≤ Vicm
≤
If the result of V
calculation is not in the previous range, input coupling capacitors must
icm
be used (with V between 2.4V and 2.5V, input coupling capacitors are mandatory).
CC
For example:
With V =3V, R =150k and V =2.5V, we typically find V =2V, which is lower than
CC
in
IC
icm
3V-0.8V=2.2V. With 136.5kΩ we find 1.97V and with 163.5kΩ we have 2.02V. So, no input
coupling capacitors are required.
4.4
Low frequency response
If a low frequency bandwidth limitation is requested, it is possible to use input coupling
capacitors.
In the low frequency region, C (input coupling capacitor) starts to have an effect. C forms,
in
in
with R , a first order high-pass filter with a -3dB cut-off frequency:
in
1
-------------------------------------
FCL
=
(Hz)
(F)
2π × Rin × Cin
So, for a desired cut-off frequency we can calculate C ,
in
1
---------------------------------------
Cin
=
2π × Rin × FCL
with R in Ω and F in Hz.
in
CL
33/46
Application information
TS4962
4.5
Decoupling of the circuit
A power supply capacitor, referred to as C , is needed to correctly bypass the TS4962.
S
The TS4962 has a typical switching frequency at 250kHz and output fall and rise time about
5ns. Due to these very fast transients, careful decoupling is mandatory.
A 1µF ceramic capacitor is enough, but it must be located very close to the TS4962 in order
to avoid any extra parasitic inductance being created by an overly long track wire. In relation
with dI/dt, this parasitic inductance introduces an overvoltage that decreases the global
efficiency and, if it is too high, may cause a breakdown of the device.
In addition, even if a ceramic capacitor has an adequate high frequency ESR value, its
current capability is also important. A 0603 size is a good compromise, particularly when a
4Ω load is used.
Another important parameter is the rated voltage of the capacitor. A 1µF/6.3V capacitor
used at 5V loses about 50% of its value. In fact, with a 5V power supply voltage, the
decoupling value is about 0.5µF instead of 1µF. As C has particular influence on the
S
THD+N in the medium-high frequency region, this capacitor variation becomes decisive. In
addition, less decoupling means higher overshoots, which can be problematic if they reach
the power supply AMR value (6V).
4.6
4.7
4.8
Wake-up time (tWU)
When the standby is released to set the device ON, there is a wait of about 5ms. The
TS4962 has an internal digital delay that mutes the outputs and releases them after this
time in order to avoid any pop noise.
Shutdown time (tSTBY
)
When the standby command is set, the time required to put the two output stages into high
impedance and to put the internal circuitry in standby mode is about 5ms. This time is used
to decrease the gain and avoid any pop noise during the shutdown phase.
Consumption in standby mode
Between the standby pin and GND there is an internal 300kΩ resistor. This resistor forces
the TS4962 to be in standby mode when the standby input pin is left floating.
However, this resistor also introduces additional power consumption if the standby pin
voltage is not 0V.
For example, with a 0.4V standby voltage pin, Table 3: Operating conditions on page 7
shows that you must add 0.4V/300kΩ=1.3µA in typical (0.4V/273kΩ=1.46µA in maximum) to
the standby current specified in Table 5 on page 9.
34/46
TS4962
Application information
4.9
Single-ended input configuration
It's possible to use the TS4962 in a single-ended input configuration. However, input
coupling capacitors are needed in this configuration. The schematics in Figure 61 show a
single-ended input typical application.
Figure 61. Single-ended input typical application
Vcc
6
Cs
1u
Vcc
Ve
Stdby
1
Internal
Bias
Standby
Rin
Out+
GND
150k
5
8
Cin
GND
4
3
Output
H
-
In-
In+
PWM
+
Bridge
SPEAKER
Rin
Cin
150k
Oscillator
Out-
GND
GND
7
GND
All formulas are identical except for the gain with R in kΩ:
in
Ve
300
Rin
AV
= ------------------------------ = ---------
single
Out+ – Out-
And, due to the internal resistor tolerance we have:
273
Rin
327
---------
≤
---------
≤ AV
single
Rin
In the event that multiple single-ended inputs are summed, it is important that the
-
+
impedance on both TS4962 inputs (In and In ) are equal.
Figure 62. Typical application schematic with multiple single-ended inputs
Vcc
Vek
Standby
Cink
6
Cs
1u
Vcc
Stdby
Rink
1
Internal
Bias
GND
Ve1
Out+
GND
150k
5
8
Cin1
Ceq
Rin1
Req
4
3
Output
H
-
In-
In+
PWM
+
Bridge
SPEAKER
GND
150k
Oscillator
Out-
GND
GND
7
GND
35/46
Application information
TS4962
We have the following equations:
+
-
300
300
------------
------------
Out – Out = V
×
+ …+ V
×
ek
(V)
e1
k
R
R
in1
ink
C
C
=
C
Σ
eq
ini
j=1
1
= -------------------------------------------------------
(F)
ini
2 × π× R × F
ini
CLi
1
Req = -------------------
k
1
---------
∑
R
ini
j =1
In general, for mixed situations (single-ended and differential inputs) it is best to use the
same rule, that is, to equalize impedance on both TS4962 inputs.
4.10
Output filter considerations
The TS4962 is designed to operate without an output filter. However, due to very sharp
transients on the TS4962 output, EMI radiated emissions may cause some standard
compliance issues.
These EMI standard compliance issues can appear if the distance between the TS4962
outputs and the loudspeaker terminal is long (typically more than 50mm, or 100mm in both
directions, to the speaker terminals). As the PCB layout and internal equipment device are
different for each configuration, it is difficult to provide a one-size-fits-all solution.
However, to decrease the probability of EMI issues, there are several simple rules to follow:
●
Reduce, as much as possible, the distance between the TS4962 output pins and the
speaker terminals.
●
●
Use ground planes for “shielding” sensitive wires.
Place, as close as possible to the TS4962 and in series with each output, a ferrite bead
with a rated current at minimum 2.5A and impedance greater than 50Ω at frequencies
above 30MHz. If, after testing, these ferrite beads are not necessary, replace them by a
short-circuit.
●
Allow enough footprint to place, if necessary, a capacitor to short perturbations to
ground (see Figure 63).
36/46
TS4962
Application information
Figure 63. Method for shorting pertubations to ground
Ferrite chip bead
To speaker
about 100pF
From TS4962 output
Gnd
In the case where the distance between the TS4962 output and the speaker terminals is
high, it's possible to have low frequency EMI issues due to the fact that the typical operating
frequency is 250kHz. In this configuration, we recommend using an output filter (as
represented in Figure 1: Typical application schematics on page 8). It should be placed as
close as possible to the device.
4.11
Several examples with summed inputs
Example 1: Dual differential inputs
Figure 64. Typical application schematic with dual differential inputs
Vcc
Standby
6
Cs
1u
Vcc
Stdby
1
Internal
Bias
R2
E2+
Out+
GND
150k
5
8
R1
4
3
Output
H
-
E1+
E1-
In-
In+
PWM
+
Bridge
SPEAKER
R1
150k
Oscillator
E2-
Out-
R2
GND
7
GND
With (R in kΩ):
i
Out+ – Out-
E1+ – E1
300
R1
AV = ------------------------------ = ---------
1
-
Out+ – Out-
E2+ – E2
300
R2
AV = ------------------------------ = ---------
2
-
VCC × R1 × R2 + 300 × (VIC1 × R2 + VIC2 × R1)
-------------------------------------------------------------------------------------------------------------------------------
300 × (R1 + R2) + 2 × R1 × R2
0.5V ≤
≤ VCC – 0.8V
-
-
E1+ + E1
E2+ + E2
VIC = ------------------------ and VIC = ------------------------
1
2
2
2
37/46
Application information
TS4962
Example 2: One differential input plus one single ended input
Figure 65. Typical application schematic with one differential input plus one single-
ended input
Vcc
Standby
6
Cs
1u
Vcc
Stdby
1
Internal
Bias
R2
E2+
C1
Out+
GND
150k
5
8
R1
4
3
Output
H
-
E1+
In-
In+
PWM
+
E2-
Bridge
SPEAKER
R2
150k
Oscillator
Out-
R1
GND C1
GND
7
GND
With (R in kΩ) :
i
Out+ – Out-
300
R1
AV = ------------------------------ = ---------
1
+
E1
Out+ – Out-
E2+ – E2
300
R2
AV = ------------------------------ = ---------
2
-
1
--------------------------------------
C1
=
(F)
2π × R1 × FCL
38/46
TS4962
Demo board
5
Demo board
A demo board for the TS4962 is available. For more information about this demo board,
refer to the Application Note AN2406.
Figure 66. Schematic diagram of mono class D demoboard for the TS4962 DFN
package
Vcc
Cn4
Vcc
Cn6
1
2
3
C3
1uF
Gnd
GND
6
U1
Cn2
GND
Vcc
Stdby
1
Internal
Bias
Out+
C1
100nF
150k
5
8
Cn5
Cn1
R1
4
3
Output
H
-
1
2
3
Positive Output
Negative Output
Negative input
Positive Input
In-
In+
PWM
150k
R2
+
GND
Bridge
Speaker
150k
Oscillator
Input
Out-
150k
100nF
C2
GND
7
TS4962DFN
Cn3
GND
Figure 67. Top view
39/46
Demo board
TS4962
Figure 68. Bottom layer
Figure 69. Top layer
40/46
TS4962
Recommended footprint
6
Recommended footprint
Figure 70. Recommended footprint for TS4962 DFN package
1.8mm
0.8mm
0.35mm
2.2mm
0.65mm
1.4mm
41/46
DFN8 package information
TS4962
7
DFN8 package information
In order to meet environmental requirements, STMicroelectronics offers these devices in
®
ECOPACK packages. These packages have a lead-free second level interconnect. The
category of second level interconnect is marked on the package and on the inner box label,
in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics
trademark. ECOPACK specifications are available at: www.st.com.
42/46
TS4962
DFN8 package information
Figure 71. DFN8 3x3 exposed pad package
Dimensions
Ref.
Millimeters
Typ.
Mils
Min.
Max.
Min.
Typ.
Max.
A
A1
A2
A3
b
0.50
0.60
0.02
0.40
0.15
0.30
3.00
1.70
3.00
1.20
0.65
0.55
0.65
0.05
19.70
23.62
0.79
25.60
1.97
15.75
5.90
0.22
0.35
3.15
1.80
3.15
1.30
8.67
13.78
124.00
70.87
124.00
51.18
0.25
2.85
1.60
2.85
1.10
9.85
112.20
63.00
112.20
43.30
11.81
118.10
66.93
118.10
47.25
25.60
21.65
D
D2
E
E2
e
L
0.50
0.60
19.70
23.62
Note:
DFN8 exposed pad (e2 x d2) is connected to pin number 7.
For enhanced thermal performance, the exposed pad must be soldered to a copper area on
the PCB, acting as heatsink. This copper area can be electrically connected to pin7 or left
floating.
43/46
Ordering information
TS4962
8
Ordering information
Table 11. Order codes
Temperature
Part number
Package
Packaging
Marking
K962
range
TS4962IQT
-40° C, +85°C
DFN8
Tape & reel
44/46
TS4962
Revision history
9
Revision history
Table 12. Document revision history
Date
Revision
Changes
Modified package information. Now includes only standard DFN8
package.
31-May-2006
5
Added curves in Section 3: Electrical characteristics. Added
evaluation board information in Section 5: Demo board.
16-Oct-2006
10-Jan-2007
6
7
Added recommended footprint.
Added paragraph about rated voltage of capacitor in Section 4.5:
Decoupling of the circuit.
45/46
TS4962
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