Panasonic AN7124 Datasheet
ICs for Audio Common Use
AN7124
Dual 3.1 W Audio Power Amplifier
■ Overview
The AN7124 is a monolithic integrated circuit designed
for dual audio power amplifier of portable radio cassette.
■ Features
• Audio output : 3.1 W × 2 channel
• Built-in standby and muting circuit
• Built-in thermal shut down protection circuit
• Low pop noise during standby and mute ON/OFF
• No negative feedback pin
■ Applications
•
Radio-cassette
■ Block Diagram
45 dB
45 dB
Mute
φ3.6
(10.0)(10.0)
20.0±0.3
28.0±0.3
29.75±0.30
0.6
1.2±0.1
Over current
thermal
protection
circuit
7.7±0.3
R1.8
(12.5)
(1.2)
19.1±0.3
21.9±0.3
HSIP012-P-0000A
Unit : mm
121
(1.27) (1.3)
(1.27)
+0.15
–0.05
0.6
2.54
+0.10
–0.05
1.45±0.151.80±0.15
0.25
29.6±0.3
3.5±0.3
STB
1
2
3
■ Pin Descriptions
Pin No. Description
1 Stand-by
2 Muting
3 ch.2 input
4 ch.1 input
5 Input GND
6 Ripple filter
Ripple
filter
4
5
6
7
8
9
10
11
12
CC
GND
GND
V
Pin No. Description
7 ch.1 output
8 ch.1 bootstrap
9 Output GND
10 V
CC
11 ch.2 bootstrap
12 ch.2 output
1
AN7124 ICs for Audio Common Use
■ Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply voltage V
Supply current I
Power dissipation P
Operating ambient temperature T
Storage temperature T
CC
CC
D
opr
stg
■ Recommended Operating Range
Parameter Symbol Range Unit
Supply voltage V
CC
■ Electrical Characteristics at VCC = 12 V, RL = 3 Ω, f = 1 kHz, Ta = 25 °C
Parameter Symbol Conditions Min Typ Max Unit
Quiescent current I
Output noise voltage
*1
V
Voltage gain G
Total harmonic distortion
*2
THD VIN = 3 mV 0.05 0.5 %
Maximum output 1 P
Channel balance CB VIN = 3 mV −10 1dB
Ripple rejection
*1
RR RG = 0 Ω,VR = 280 mVrms,fR = 120 Hz 45 50 dB
Standby current I
*1,*3
*1
*3
Mut VIN = 10 mV 60 80 dB
P
CT RG = 10 kΩ,VIN = 10 mV,f = 1 kHz 50 64 dB
Muting effects
Maximum output 2
Crosstalk
VIN = 0 mV 12 19 26 mA
CQ
VIN = 0 mV,PG = 10 kΩ0.27 0.5 mVrms
NO
VIN = 3 mV 43 45 47 dB
V
THD = 10 % 4.3 5.0 W
O1
VIN = 0 mV 110µA
STB
THD = 10 %,VCC = 9 V 2.5 3.0 W
O2
24 V
4.0 A
37.5 W
−25 to +75 °C
−55 to +150 °C
6.0 to 18.0 V
Note) *1: With a filter band from 20 Hz to 20 kHz (12 dB/OCT) used.
*2: With a filter band from 400 Hz to 30 kHz used.
*3: Reference data for design.
2
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