PT2301-A [PTC]
1 Watt Audio Power Amplifier; 1瓦音频功率放大器
| 型号： | PT2301-A |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | 1 Watt Audio Power Amplifier |
| 文件： | 总5页 (文件大小：198K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
1 Watt Audio Power Amplifier
PT2301
DESCRIPTION
The PT2301 is an integration audio power amplifier IC utilizing advanced CMOS technology.
Supports 2 mono MIC input and 2 stereo line input, input gain of each amp can be set individually to
meet customers’ needs. Built-in digital controlled volumes have 49 steps from +15dB ~ -90dB and all
the functions can be controlled via I2C bus. In the output section, the PT2301 is equipped with both
stereo headphone driver and mono speaker amp maximum output up to 1 watt.
The PT2301 also equipped “Energy Save” power management systems; user can turn off the unused
portion to minimize total power consumption for extended battery endurance. For different applications,
the headphone section of the PT2301 has two mode types for different purposes, A-type (Output
Capacitor-less) or B-type (Output with Capacitor).
FEATURES
• 1W (8 Ω) mono channel speaker driver + stereo headphone driver
• Digital controlled volume (49 steps /+15dB ~ -90dB)
• 2 mono microphone inputs, 1 microphone output
• 2 stereo line input
• Input gain can be setting individually in each input port.
• Eliminate DC block capacitor in the headphone driver output (Only PT2301-A supported)
• Standby mode and Mute function
• Thermal shutdown protection circuit
• Energy Save function
• Very low “POP” noise during function changed.
• Wide operation voltage range: 2.7V ~ 5.5V
• Low Distortion: earphone output < 0.05%, speaker output< 0.04%
• Available in 24 Pin, space saving TSSOP Package
APPLICATIONS
• Electronic dictionary
• Translator
• PDA
• DSC (Digital Still Camera)
• GPS
PT2301 V1.4
- 1 -
April, 2006
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
1 Watt Audio Power Amplifier
PT2301
PIN CONFIGURATION
L1L
L2L
1
2
3
4
5
6
7
8
9
24 MIC_SENSE
23 HP_SENSE
22 LOUT
21 VP1
MIC1
VSS2
SCL
20 SP+
SDA
19 VEE
PT2301-A
VCC
18 SP-
MICOUT
MIC2
17 VP2
16 ROUT
15 VSS1
14 /SHUTDOWN
13 MUTE
L2R 10
L1R 11
REF 12
L1L
L2L
1
2
3
4
5
6
7
8
9
24 MIC_SENSE
23 HP_SENSE
22 LOUT
21 VP1
MIC1
VSS2
SCL
20 SP+
SDA
19 NC
PT2301-B
VCC
18 SP-
MICOUT
MIC2
17 VP2
16 ROUT
15 VSS1
L2R 10
L1R 11
REF 12
14 /SHUTDOWN
13 MUTE
PT2301 V1.4
- 2 -
April, 2006
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
1 Watt Audio Power Amplifier
PT2301
APPLICATION CIRCUIT I (PT2301-A)
VCC
4.7K
4.7K
External
Cb1
10uF
C9 1uF R3 10K
MIC IN
Microphone Jack
C8 1uF R4 10K
Internal MIC IN
C2 1uF
MIC OUT
C7 1uF RL1 24K
L1L
L2L
1
2
3
4
5
6
7
8
9
L1L
MIC_SENSE 24
HP_SENSE 23
LOUT 22
C6 1uF
L2L
RL2 24K
MIC1
VSS2
SCL
VCC
VP1 21
Headphone Jack
SCL
SDA
SP+ 20
VCC
8 ohm
SDA
VEE 19
PT2301-A
VCC
MICOUT
MIC2
SP- 18
VP2 17
VCC
100uF
C3
100uF
ROUT 16
100uF
C4 1uF RR2 24K
L2R
L1R
10 L2R
11 L1R
12 REF
VSS1 15
C5 1uF
/SHUTDOWN 14
MUTE 13
/SHUTDOWN
MUTE
RR1 24K
Cb
1uF
Notes
1. The (+) polarity of DC block capacitor installed in the I/O pin of the PT2301 should face towards the
higher potential.
2. HP_SENSE (Pin 23) must be connected to Pin22 LOUT.
3. The gain setting resistors (R3、R4、RL1、RL2、RR1、RR2 ) should keep as close as possible with
the PT2301 chip to prevent pick up noises.
4. DO NOT CONNECT HEADPHONE COMMON (VEE) TO OTHER AUDIO EQUIPMENT! THIS
MAY CAUSES IC DAMAGE.
PT2301 V1.4
- 3 -
April, 2006
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
1 Watt Audio Power Amplifier
PT2301
APPLICATION CIRCUIT II (PT2301-B)
VCC
4.7K
4.7K
VCC
External
Cb1
10uF
C9 1uF R3 10K
MIC IN
R8
10K
Microphone Jack
R10 1K
R9 1K
C8 1uF R4 10K
Internal MIC IN
R7
10K
C2 1uF
MIC OUT
C11
300uF
C7 1uF RL1 24K
L1L
L2L
1
2
3
4
5
6
7
8
9
L1L
MIC_SENSE 24
HP_SENSE 23
LOUT 22
C6 1uF
L2L
RL2 24K
C12
MIC1
VSS2
SCL
VCC
Headphone Jack
300uF
VP1 21
SCL
SDA
SP+ 20
VCC
8 ohm
SDA
NC 19
PT2301-B
VCC
MICOUT
MIC2
SP- 18
VP2 17
VCC
100uF
C3
100uF
ROUT 16
100uF
C4 1uF RR2 24K
L2R
L1R
10 L2R
11 L1R
12 REF
VSS1 15
C5 1uF
/SHUTDOWN 14
MUTE 13
/SHUTDOWN
MUTE
RR1 24K
Cb
1uF
Notes
1. The (+) polarity of DC block capacitor installed in the I/O pin of the PT2301 should face towards the
higher potential.
2. The gain setting resistors (R3、R4、RL1、RL2、RR1、RR2 ) should be kept as close as possible
with the PT2301 chip to prevent pick up noises.
PT2301 V1.4
- 4 -
April, 2006
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
1 Watt Audio Power Amplifier
PT2301
ORDER INFORMATION
Valid Part Number
PT2301-A
Package Type
24 Pins, TSSOP, 173mil
24 Pins, TSSOP, 173mil
Top Code
PT2301-A
PT2301-B
PT2301-B
PT2301 V1.4
- 5 -
April, 2006
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