PA3112_15 [UTC]
DUAL 150mW AUDIO POWER AMPLIFIER;
| 型号： | PA3112_15 |
| 厂家： | 
Unisonic Technologies |
| 描述： | DUAL 150mW AUDIO POWER AMPLIFIER 放大器 功率放大器 |
| 文件： | 总8页 (文件大小：332K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
PA3112
CMOS IC
DUAL 150mW AUDIO POWER
AMPLIFIER
DESCRIPTION
The UTC PA3112 is a dual audio power amplifier with
differential inputs capable of delivering typically 150mW per
channel of continuous average power to an 16Ω load with less
than 0.1% THD+N using a 5V power supply. The unity-gain stable
UTC PA3112 can be configured by external gain-setting resistors.
The UTC PA3112 features an externally controlled, low-power
consumption shutdown mode. The UTC PA3112 exhibit a low
quiescent current of typically 1.5mA, allowing usage in portable
applications.
MSOP-10
FEATURES
Lead-free:
Halogen-free: PA3112G
PA3112L
* Operating voltage range VDD=2.5V~5.5V
* Output power:
-150mW @5V into 16Ω
* Differential inputs
* Shutdown mode available
* Low current consumption:3mA max
* click and pop reduction circuitry
* Unity-gain stable
* Thermal and over-current protection
ORDERING INFORMATION
Ordering Number
Package
Packing
Normal
Lead Free
Halogen Free
PA3112-SM2-R
PA3112-SM2-T
PA3112L-SM2-R
PA3112L-SM2-T
PA3112G-SM2-R
PA3112G-SM2-T
MSOP-10
MSOP-10
Tape Reel
Tube
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Copyright © 2008 Unisonic Technologies Co., Ltd
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CMOS IC
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO
4
PIN NAME
BYPASS
I/O
I
DESCRIPTION
Connect to internal voltage divider. For best performance, a 0.1 μF ~ 1 μF
low ESR capacitor used.
5
2
GND
IN1-
I
I
Ground
Channel 1 negative input.
3
IN1+
I
Channel 1 positive input.
8
IN2-
I
Channel 2 negative input.
7
IN2+
I
Channel 2 positive input.
6
SHUTDOWN
VDD
I
Low quiescent current mode enable. High active.
Supply voltage.
10
1
I
VOUT
VOUT
1
2
O
O
Channel 1 audio output.
9
Channel 2 audio output.
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PA3112
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VDD
RATINGS
6
UNIT
V
Supply Voltage
Input Voltage
VIN
-0.3~VDD~+0.3
internally limited
-40 ~ +150
-65 ~ +150
V
Continuous Total Power Dissipation
Operating Junction Temperature
Storage Temperature
℃
℃
TJ
TSTG
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VDD
MIN
2.5
TYP
MIN
MAX
5.5
UNIT
Supply Voltage
V
V
V
High-level Input Voltage
Low-level Input Voltage
VIH, (SHUTDOWN) 0.6×VDD
VIL, (SHUTDOWN)
0.25×VDD
ELECTRICAL CHARACTERISTICS (TA = 25℃)
PARAMETER
SYMBOL
TEST CONDITIONS
TYP
MAX
UNIT
DC ELECTRICAL CHARACTERISTICS
Output Offset Voltage
VO(OFF) AV = 2 V/V,
15
mV
dB
VDD = 3.2 V ~ 3.4 V
VDD = 4.9 V ~ 5.1 V
SHUTDOWN = 0 V,
83
76
Power Supply Rejection Ratio
Supply Current
PSRR
IDD
1.5
3
mA
VDD = 2.5 ~ 5.5 V
Supply Current in SHUTDOWN
Mode
IDD(SD) SHUTDOWN = VDD
ZIN VDD = 2.5 ~ 5.5 V
10
>1
50
μA
Input Impedance
MΩ
AC OPERATING CHARACTERISTICS (VDD = 3.3V, RL = 16Ω)
THDꢀ0.1%, f = 1 kHz
THD+N POUT = 40 mW, 20 - 20 kHz
Output Power (Each Channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
POUT
60
0.4%
>20
96°
71
mW
KHz
BOM
RR
G = 10, THD < 5%
Open loop
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
f = 1 kHz
dB
dB
dB
f = 1 kHz
89
SNR
eN
POUT = 50 mW, AV = 1
100
Noise Output Voltage
AV = 1
11
μV(rms)
AC OPERATING CHARACTERISTICS (VDD = 5V, RL = 16Ω)
Output Power (each channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
POUT THD≤0.1%, f = 1 kHz
THD+N POUT = 100 mW, 20 - 20 kHz
150
0.6%
>20
96°
mW
KHz
BOM
G = 10, THD < 5%
Open loop
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
RR
f = 1 kHz
61
dB
dB
f = 1 kHz
90
SNR POUT = 100 mW, AV = 1
eN AV = 1
100
11.7
dB
Noise Output Voltage
μV(rms)
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PA3112
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
AC OPERATING CHARACTERISTICS (VDD = 3.3V, RL = 32Ω)
Output Power (Each Channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
POUT THD≤ 0.1%, f = 1 kHz
THD+N POUT = 30 mW, 20 - 20 kHz
40
0.4%
>20
96°
71
mW
KHz
BOM
AV = 10, THD < 2%
Open loop
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
RR
f = 1 kHz
dB
dB
f = 1 kHz
95
SNR POUT = 40 mW, AV = 1
eN AV = 1
100
11
dB
Noise Output Voltage
μV(rms)
AC OPERATING CHARACTERISTICS (VDD = 5V, RL = 32Ω)
Output Power (Each Channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
POUT THD≤ 0.1%, f = 1 kHz
THD+N POUT = 60 mW, 20 - 20 kHz
90
0.4%
>20
97°
61
mW
KHz
BOM
AV = 10, THD < 2%
Open loop
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
RR
f = 1 kHz
dB
dB
f = 1 kHz
98
SNR POUT = 90 mW, AV = 1
eN AV = 1
100
11.7
dB
Noise Output Voltage
μV(rms)
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PA3112
CMOS IC
TYPICAL APPLICATION CIRCUIT
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TYPICAL CHARACTERISTICS
Figure 5. Supply Ripple Rejection
Ratio Vs Frequency
Figure 6. Output Noise Voltage vs
Frequency
0
100
VDD = 5 V,
RL = 16 Ω,
-10
-20
-30
AV=-10V/V
0.1µF
AV=-1V/V
-40
-50
AV=-1V/V
1µF
-60
10
-70
Bypass=2.5V
-80
-90
-100
-110
-120
VDD = 5 V,
W = 10 Hz ~ 22KHz
RL = 16 Ω,
B
1
20
20
100
1K
10K20K
100
1K
10K20K
Frequency, f (Hz)
Frequency, f (Hz)
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PA3112
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
Figure 7. Crosstalk vs Frequency
Figure 8. Crosstalk vs Frequency
10
1
0
-10
-20
-30
-40
-50
-60
VDD = 5 V,
PO = 150 mW,
CB = 1 µF,
RL = 8 Ω
VDD = 5 V,
PO=150mW
CB=1µF,
RL = 8 Ω,
AV=-1V/V
0.1
-70
-80
IN2-~VOUT
1
0.01
-90
-100
IN1-~VOUT
2
-110
0.001
-120
20
100
1K
10K20K
20
100
1K
10K20K
Frequency, f (Hz)
Frequency, f (Hz)
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PA3112
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
Figure 13. Signal-to-Noise Ratio vs
Voltage Gain
Figure 14. Power Disssipation/Amplifier
vs Load Power
VDD=5V
120
100
180
160
VDD=5V
140
120
100
80
80
60
40
16Ω
32Ω
60
40
20
0
64Ω
20
0
1
2
3
4
5
6
7
8
9
10
0 20 40 60 80100120140160180200
Load Power (mW)
Voltage Gain, AV (V/V)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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