UNISONIC TECHNOLOGIES CO., LTD
PA7522
DUAL 3-W BTL AUDIO
POWER AMPLIFIER
DESCRIPTION
The UTC
PA7522
is an audio power amplifier IC for the
stereo system. In the BTL (balanced transformer less) method,
fewer external parts and easier design for applications are
required.
LINEAR INTEGRATED CIRCUIT
FEATURES
* 3-W output (8Ω) with supply voltage of 8V
* On-chip standby function
* On-chip volume function
Lead-free:
PA7522L
Halogen-free: PA7522G
ORDERING INFORMATION
Normal
PA7522-H12-A-T
PA7522-H14-B-T
Ordering Number
Lead Free Plating
PA7522L-H12-A-T
PA7522L-H14-B-T
Halogen Free
PA7522G-H12-A-T
PA7522G-H14-B-T
Package
HSIP-12A
HSIP-14B
Packing
Tube
Tube
www.unisonic.com.tw
Copyright © 2009 Unisonic Technologies Co., Ltd
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QW-R107-059.A
PA7522
PIN DESCRIPTION
PIN NO.
HSIP-12A HSIP-14B
-
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
-
14
PIN NAME
NC
V
CC
Ch.1+ output
GND
Ch.1- output
Standby
Ch.1 input
GND
Ch.2 input
Volume
Ch.2- output
GND
Ch.2+ output
NC
LINEAR INTEGRATED CIRCUIT
DESCRIPTION
No connect
Supply voltage
Ch.1+ output
Ground (output ch.1)
Ch.1 - output
Standby (standby state if this pin is open)
Ch.1 input
Ground (input)
Ch.2 input
Volume (max. volume if this pin is open.)
Ch.2 - output
Ground (output ch.2)
Ch.2 + output
No connect
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QW-R107-059.A
PA7522
BLOCK DIAGRAM
HSIP-12A
LINEAR INTEGRATED CIRCUIT
HSIP-14B
+
12
Ch.2+ output
+
11
-
10
+
Ch.2- output
9
+
Volume
8
Ch.2 input
7
GND
6
Ch.1 input
5
+
Standby
4
Ch.1- output
3
-
2
+
Ch.1+ output
1
+
Vcc
UNISONIC TECHNOLOGIES CO., LTD
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-
GND
(Ch.1 output)
+
-
-
-
-
-
14
Ch.2+ output
GND
(Ch.2 output)
13
12
GND
(Ch.2 output)
11
Ch.2- output
10
Volume
9
Ch.2 input
8
GND
7
Ch.1 input
6
Standby
5
Ch.1- output
4
GND
(Ch.1 output)
3
Ch.1+ output
2
1
Vcc
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QW-R107-059.A
PA7522
ABSOLUTE MAXIMUM RATINGS
(Ta = 25°C)
LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage (At no signal)
V
CC
14
V
Supply Current
I
CC
2.0
A
Power Dissipation(Ta = 70°C)
P
D
1.92
W
Operating Temperature
T
OPR
-20 ~ +85
°C
Storage Temperature
T
STG
-40 ~ +150
°C
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 RATINGS
PARAMETER
Supply voltage
SYMBOL
V
CC
RATINGS
3.5 ~ 13.5
UNIT
V
ELECTRICAL CHARACTERISTICS
(V
CC
=8.0V, R
L
=8Ω, f=1kHz, Ta=25°C±2°C, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
Quiescent Circuit Current
I
D
V
IN
=0mV, Vo1.=0V
Standby Current
I
STN-BY
V
IN
=0mV, Vo1.=0V
Output Noise Voltage (Note)
V
NO
R
G
=10KΩ, Vo1.=0V
Output Offset Voltage
V
OFF
R
G
=10KΩ, Vo1.=0V
Total Harmonic Distortion
THD
P
OUT
=0.5W, Vo1.=1.25V
Maximum Output Power
P
OUT1
THD=10%, Vo1.=1.25V
R
G
=10KΩ, Vo1.=0V
Ripple Rejection (Note)
RR
V
R
=1V(rms), f
R
=120Hz
Voltage Gain
G
v
P
OUT
=0.5W, Vo1.=1.25V
Volume Attenuation Rate*
Att
P
OUT
=0.5W, Vo1.=0V
Channel Balance 1
CB1
P
OUT
=0.5W, Vo1.=1.25V
Channel Balance 2
CB2
P
OUT
=0.5W, Vo1.=0.6V
Intermediate Voltage Gain
G
VM
P
OUT
=0.5W, Vo1.=0.6V
Channel Crosstalk
C
T
P
OUT
=0.5W, Vo1.=1.25V
Note: In measuring, the filter for the range of 15 Hz ~ 30 kHz (12 dB/OCT) is used.
MIN
TYP
45
1
0.10
0
0.10
3.0
50
33
85
0
0
23.5
55
35
1
3
26.5
MAX UNIT
100
mA
10
µA
0.4
mV(rms)
250
mV
0.5
%
W
dB
dB
dB
dB
dB
dB
dB
-250
2.4
30
31
70
-1
-3
20.5
40
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QW-R107-059.A
PA7522
TERMINAL EQUIVALENT CIRCUITS AT V
CC
=8V
PIN NO.
HSIP-12A
HSIP-14B
1
2
2
3
3
4
4
5
5
6
7
8
9
10
11
12
6
7
8
9
10
11
12
13
PIN NAME
V
CC
Ch.1 + output pin
GND
Ch.1 - output pin
Standby pin
Ch.1 input pin
GND
Ch.2 input pin
Volume pin
Ch.2-output pin
GND
Ch.2+ output pin
LINEAR INTEGRATED CIRCUIT
VOLTAGE
8V
3.6V (at no signal)
0V
3.9V (at no signal)
0V or 5V (Standby off at supply 5V.
Standby at 0.4V less or open. )
1.4V (Input circuit bias voltage is output)
0V
1.4V (Input circuit bias voltage is output)
Supply to 0V ~ 1.25V
3.9V (at no signal)
0V
3.6V (at no signal)
USAGE NOTES
* Please avoid the short-circuits to V
CC
, ground, or load short-circuit.
* Please connect the cooling fin with the GND potential.
* The thermal shutdown circuit operates at about T
J
=150°C. However, the thermal shutdown circuit is reset
automatically if the temperature drops.
* Please carefully design the heat radiation especially when you take out high power at high V
CC
.
* Please connect only the ground of signal with the signal GND of the amplifier in the previous stage.
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QW-R107-059.A
