UNISONIC TECHNOLOGIES CO., LTD
PA6112
DUAL 150MW AUDIO POWER
AMPLIFIER
DESCRIPTION
The UTC
PA6112
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
PA6112
can be configured by external gain-setting resistors.
The UTC
PA6112
features an externally controlled, low-power
consumption shutdown mode. The UTC
PA6112
exhibit a low
quiescent current of typically 1.5mA, allowing usage in portable
applications.
CMOS IC
MSOP-10
FEATURES
* Operating voltage range V
DD
=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
*Pb-free plating product number: PA6112L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
PA6112-SM2-R
PA6112L-SM2-R
PA6112-SM2-T
PA6112L-SM2-T
Package
MSOP-10
MSOP-10
Packing
Tape Reel
Tube
PA6112L-SM2-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) SM2: MSOP-10
(3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 8
QW-R502-100,A
PA6112
PIN CONFIGURATION
V
OUT
1 1
IN1-
IN1+
BYPASS
GND
2
3
4
5
10 V
DD
9 V
OUT
2
8 IN2-
7 IN2+
6
SHUTDOWN
CMOS IC
PIN DESCRIPTION
PIN NO
4
5
2
3
8
7
6
10
1
9
PIN NAME
BYPASS
GND
IN1-
IN1+
IN2-
IN2+
SHUTDOWN
V
DD
V
OUT
1
V
OUT
2
I/O
I
I
I
I
I
I
I
I
O
O
DESCRIPTION
Connect to internal voltage divider. For best performance, a 0.1 µF ~ 1 µF
low ESR capacitor used.
Ground
Channel 1 negative input.
Channel 1 positive input.
Channel 2 negative input.
Channel 2 positive input.
Low quiescent current mode enable. High active.
Supply voltage.
Channel 1 audio output.
Channel 2 audio output.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R502-100,A
PA6112
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
V
DD
V
IN
CMOS IC
RATINGS
UNIT
Supply Voltage
6
V
Input Voltage
-0.3~V
DD
~+0.3
V
Continuous Total Power Dissipation
internally limited
℃
Operating Junction Temperature
T
J
-40 ~ +150
℃
Storage Temperature
T
STG
-65 ~ +150
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
Supply Voltage
High-level Input Voltage
Low-level Input Voltage
SYMBOL
V
DD
V
IH
, (SHUTDOWN)
V
IL
, (SHUTDOWN)
MIN
2.5
0.6×V
DD
TYP
MAX
5.5
0.25×V
DD
UNIT
V
V
V
ELECTRICAL CHARACTERISTICS
(T
A
= 25℃)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DC ELECTRICAL CHARACTERISTICS
Output
Offset
Voltage
Power Supply Rejection Ratio
Supply Current
Supply Current in SHUTDOWN
Mode
Input Impedance
V
O(OFF)
PSRR
I
DD
I
DD(SD)
Z
IN
A
V
= 2 V/V,
V
DD
= 3.2 V ~ 3.4 V
V
DD
= 4.9 V ~ 5.1 V
SHUTDOWN = 0 V,
V
DD
= 2.5 ~ 5.5 V
SHUTDOWN = V
DD
V
DD
= 2.5 ~ 5.5 V
15
83
76
1.5
10
>1
3
50
mV
dB
mA
µA
MΩ
AC OPERATING CHARACTERISTICS (V
DD
= 3.3V, R
L
= 16Ω)
Output Power (Each Channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
Noise Output Voltage
THD
0.1%, f = 1 kHz
P
OUT
THD+N P
OUT
= 40 mW, 20 - 20 kHz
B
OM
G = 10, THD < 5%
Open loop
RR
f = 1 kHz
f = 1 kHz
SNR
P
OUT
= 50 mW, A
V
= 1
eN
A
V
= 1
60
0.4%
>20
96°
71
89
100
11
mW
KHz
dB
dB
dB
µV(rms)
AC OPERATING CHARACTERISTICS (V
DD
= 5V, R
L
= 16Ω)
Output Power (each channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
Noise Output Voltage
P
OUT
THD≤0.1%, f = 1 kHz
THD+N P
OUT
= 100 mW, 20 - 20 kHz
B
OM
G = 10, THD < 5%
Open loop
RR
f = 1 kHz
f = 1 kHz
SNR P
OUT
= 100 mW, A
V
= 1
eN
A
V
= 1
150
0.6%
>20
96°
61
90
100
11.7
mW
KHz
dB
dB
dB
µV(rms)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 8
QW-R502-100,A
PA6112
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
CMOS IC
MAX
UNIT
AC OPERATING CHARACTERISTICS (V
DD
= 3.3V, R
L
= 32Ω)
Output Power (Each Channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
Noise Output Voltage
P
OUT
THD≤ 0.1%, f = 1 kHz
THD+N P
OUT
= 30 mW, 20 - 20 kHz
B
OM
A
V
= 10, THD < 2%
Open loop
RR
f = 1 kHz
f = 1 kHz
SNR P
OUT
= 40 mW, A
V
= 1
eN
A
V
= 1
40
0.4%
>20
96°
71
95
100
11
mW
KHz
dB
dB
dB
µV(rms)
AC OPERATING CHARACTERISTICS (V
DD
= 5V, R
L
= 32Ω)
Output Power (Each Channel)
Total Harmonic Distortion + Noise
Maximum Output Power BW
Phase Margin
Supply Ripple Rejection Ratio
Channel/Channel Output Separation
Signal-to-Noise Ratio
Noise Output Voltage
P
OUT
THD≤ 0.1%, f = 1 kHz
THD+N P
OUT
= 60 mW, 20 - 20 kHz
B
OM
A
V
= 10, THD < 2%
Open loop
RR
f = 1 kHz
f = 1 kHz
SNR P
OUT
= 90 mW, A
V
= 1
eN
A
V
= 1
90
0.4%
>20
97°
61
98
100
11.7
mW
KHz
dB
dB
dB
µV(rms)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
QW-R502-100,A
PA6112
TYPICAL APPLICATION CIRCUIT
CMOS IC
R
b
R
f
R
I
Right In
C
I
R
I
C
I
R
f
4 BYPASS
C
b
R
I
C
I
Left In
C
I
R
I
R
f
8 IN2-
R
f
7 IN2+
3 IN1+
2 IN1-
R
b
V
DD
/2
V
DD
10
V
DD
C
S
V
OUT
1 1
Co
Bias SHUTDOWN 6
control
R
L
16 or 32Ω
V
OUT
2 9
5
Co
R
L
16 or 32Ω
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R502-100,A
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