SGM4891 [SGMICRO]
1.2W Audio Power Amplifier;
| 型号： | SGM4891 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 1.2W Audio Power Amplifier |
| 文件： | 总9页 (文件大小：571K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM4891
1.2W Audio Power Amplifier
GENERAL DESCRIPTION
FEATURES
The SGM4891 is a fully-integrated audio power
amplifier which operates from 2.5V to 5.5V supply
voltage. It can deliver 1.2W into an 8Ω BTL load from
5V supply at THD+N = 1%. It is designed for portable
application that needs low-component count.
Supply Voltage Range: 2.5V to 5.5V
1.2W into 8Ω BTL Load from 5V Power Supply at
THD+N = 1% (Typical, per Channel)
Shutdown Current: 0.02μA (TYP)
High PSRR
Fast Turn-On Time
The SGM4891 has a low power consumption
shutdown mode and thermal shutdown protection.
Unity-Gain Stable
Thermal Shutdown Protection
-40℃ to +85℃ Operating Temperature Range
Available in a Green TDFN-2×2-8L Package
The SGM4891 is applied to low power portable
systems. Output coupling capacitors or bootstrap
capacitors are not needed.
The SGM4891 provides an externally controlled gain
(with resistors), as well as an externally controlled
turn-on time (with the bypass capacitor) for maximum
flexibility.
APPLICATIONS
Mobile Phones
TVs
The SGM4891 is available in a Green TDFN-2×2-8L
package. It operates over an ambient temperature
range of -40℃ to +85℃.
GPS
Portable Systems
SG Micro Corp
NOVEMBER 2012 –REV. A. 2
www.sg-micro.com
SGM4891
1.2W Audio Power Amplifier
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
4891
XXXX
SGM4891
TDFN-2×2-8L
SGM4891YDE8G/TR
Tape and Reel, 3000
-40℃ to +85℃
MARKING INFORMATION
NOTE: XXXX = Date Code.
X X X X
Date Code - Week
Date Code - Year
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
OVERSTRESS CAUTION
ABSOLUTE MAXIMUM RATINGS
Supply Voltage...................................................................6V
Input Voltage........................................... -0.3V to (V+) + 0.3V
Storage Temperature Range........................-65℃ to +150℃
Junction Temperature.................................................+150℃
Lead Temperature Range (Soldering, 10s).................+260℃
ESD Susceptibility
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
HBM.............................................................................2000V
MM.................................................................................200V
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Range ........................................2.5V to 5.5V
Operating Temperature Range .......................-40℃ to +85℃
PIN CONFIGURATION
(TOP VIEW)
SHDN
Bypass
+IN
1
2
3
4
8
7
6
5
VO2
GND
V+
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
GND
-IN
VO1
TDFN-2×2-8L
SG Micro Corp
www.sg-micro.com
NOVEMBER 2012
2
SGM4891
1.2W Audio Power Amplifier
ELECTRICAL CHARACTERISTICS
(TA = +25℃, unless otherwise specified.)
PARAMETER
SYMBOL
CONDITIONS
V+ = +5.0V, No Load
MIN
TYP
5.45
5.50
5.10
5.20
5.00
5.10
4.70
4.75
0.02
MAX UNITS
10
12
V+ = +5.0V, 8Ω Load
V+ = +3.6V, No Load
V+ = +3.6V, 8Ω Load
V+ = +3.0V, No Load
V+ = +3.0V, 8Ω Load
V+ = +2.6V, No Load
V+ = +2.6V, 8Ω Load
Quiescent Power Supply Current
IQ
VIN = 0V, IO = 0A
mA
8
10.5
Shutdown Current
ISD
VSHUTDOWN = 0V
2
μA
Shutdown Voltage Input High
Shutdown Voltage Input Low
Output Offset Voltage
VSDIH
VSDIL
VOS
1.2
-65
V
V
0.4
65
1
1.2
0.6
0.4
0.3
1.5
0.8
0.5
0.4
0.07
68
mV
V+ = +5.0V
V+ = +3.6V
V+ = +3.0V
V+ = +2.6V
V+ = +5.0V
V+ = +3.6V
V+ = +3.0V
V+ = +2.6V
f = 1kHz,
THD+N = 1%
Output Power (8Ω)
PO
W
f = 1kHz,
THD+N = 10%
Total Harmonic Distortion + Noise
Power Supply Rejection Ratio
Wake-Up Time
THD+N PO = 0.4Wrms, f = 1kHz
%
V+ = +5.0V
V+ = +3.6V
V+ = +3.0V
V+ = +2.6V
V+ = +5.0V
V+ = +3.6V
V+ = +3.0V
V+ = +2.6V
V+ = +5.0V
68
f = 217Hz
68
67
PSRR
dB
72
72
f = 1kHz
71
70
TWU
CBYPASS = 1μF
145
ms
SG Micro Corp
www.sg-micro.com
NOVEMBER 2012
3
SGM4891
1.2W Audio Power Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS
THD+N vs. Frequency
THD+N vs. Output Pow er
V+ = +5.0V
AV = 2
f = 1kHz
RL = 8Ω
10
1
1
0.1
BW < 80kHz
V+ = +5.0V
PO = 0.25W
RL = 8Ω
0.1
0.01
No filters
0.01
0.001
0.01
0.1
1
10
10
10
0.01
0.1
1
10
100
Frequency (kHz)
Output Pow er (W)
THD+N vs. Frequency
THD+N vs. Output Pow er
V+ = +3.0V
AV = 2
f = 1kHz
RL = 8Ω
10
1
1
0.1
BW < 80kHz
V+ = +3.0V
PO = 0.25W
RL = 8Ω
0.1
0.01
0.001
No filters
0.01
0.01
0.1
1
10
100
0.01
0.1
1
Frequency (kHz)
Output Pow er (W)
THD+N vs. Frequency
THD+N vs. Output Pow er
V+ = +2.6V
AV = 2
f = 1kHz
RL = 8Ω
10
1
1
0.1
BW < 80kHz
V+ = +2.6V
PO = 0.1W
RL = 8Ω
0.1
0.01
0.001
No filters
0.01
0.01
0.1
1
0.01
0.1
1
10
100
Output Pow er (W)
Frequency (kHz)
SG Micro Corp
www.sg-micro.com
NOVEMBER 2012
4
SGM4891
1.2W Audio Power Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
PSRR vs. Frequency
Pow er Dissipation vs. Output Pow er
80
70
60
50
40
30
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
V+ = +5.0V
CB = 1.0μF
20 RL = 8Ω
AV = 2V/V
VRIPPLE = 200mVP-P
V+ = +5.0V, f = 1kHz, RL = 8Ω
THD+N ≤ 1%, BW < 80kHz
10
0
0.01
0.1
1
10
100
0
0.5
1
1.5
Frequency (kHz)
Output Pow er (W)
Pow er Dissipation vs. Output Pow er
Pow er Dissipation vs. Output Pow er
0.3
0.3
0.25
0.2
0.15
0.1
0.05
0
0.25
0.2
0.15
0.1
0.05
0
V+ = +2.6V, f = 1kHz, RL = 8Ω
THD+N ≤ 1%, BW < 80kHz
V+ = +3.0V, f = 1kHz, RL = 8Ω
THD+N ≤ 1%, BW < 80kHz
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Output Pow er (W)
0
0.1
0.2
0.3
0.4
0.5
0.6
Output Pow er (W)
Output Pow er vs. Supply Voltage
f = 1kHz
BW < 80kHz
RL = 8Ω
Supply Current vs. Temperature
2.5
2
7
6
5
4
3
2
V+ = 5.0V
1.5
1
10% THD+N
V+ = 3.0V
0.5
0
1% THD+N
2.5
3
3.5
4
4.5
5
5.5
-40
-15
10
35
60
85
Supply Voltage (V)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
NOVEMBER 2012
5
SGM4891
1.2W Audio Power Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Wake-Up Time vs. Bypass Capacitor
800
V+ = 3.6V
RL = 8Ω
700
600
500
400
300
200
100
0
0
1
2
3
4
5
Bypass Capacitor (µF)
SG Micro Corp
www.sg-micro.com
NOVEMBER 2012
6
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TDFN-2×2-8L
D
e
N8
E1
D1
L
E
k
N4
N1
b
BOTTOM VIEW
TOP VIEW
1.20
0.65
0.60 1.95
A
A1
A2
SIDE VIEW
0.24
0.50
RECOMMENDED LAND PATTERN (Unit: mm)
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
0.800
0.050
MIN
0.028
0.000
MAX
0.031
0.002
A
A1
A2
D
0.700
0.000
0.203 REF
0.008 REF
1.900
1.100
1.900
0.500
2.100
1.300
2.100
0.700
0.075
0.043
0.075
0.020
0.083
0.051
0.083
0.028
D1
E
E1
k
0.200 MIN
0.500 TYP
0.008 MIN
0.020 TYP
b
0.180
0.250
0.300
0.450
0.007
0.010
0.012
0.018
e
L
SG Micro Corp
www.sg-micro.com
TX00056.000
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
TDFN-2×2-8L
7″
9.5
2.30
2.30
1.10
4.0
4.0
2.0
8.0
Q1
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
7″ (Option)
7″
368
442
227
410
224
224
8
18
SG Micro Corp
www.sg-micro.com
TX20000.000
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