Panasonic AN7125 Datasheet

ICs for Audio Common Use

AN7125

Dual Channel BTL Power Amplifier

■ Overview

AN7125 is a monolithic integrated circuit designed for

13.5 W (12 V,4 Ω) output audio power amplifier.It is a
dual channel BTL IC suitable for stereo operation in radio
cassette and TV application.

■ Features

• Built-in muting pin

• Built-in stand by pin

• Built-in thermal shutdown protection circuit

• Built-in current limiting circuit

• High power :(13.5 W/12 V/4 Ω)
(13.0 W/15 V/8 Ω)

• Few external components

• Operating voltage range 6 V ∼ 18 V (12 V typ.)

■ Applications

•

Radio-cassette

■ Block Diagram

28.0±0.3

29.75±0.30

φ3.6

(10.0)(10.0)

20.0±0.3

R1.8

0.6

1.2±0.1

HSIP012-P-0000A

7.7±0.3

(12.5)

21.9±0.3

19.1±0.3

(1.2)

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

REF

TSD

protection

circuit

Standby

circuit

1

2

3

4

5

CC

V

GND

6

Mute

7

GND

8

9

10

11

12

GND

1

AN7125 ICs for Audio Common Use

■ Pin Descriptions

Pin No. Description

1V

CC

2 ch.1 + ve Phase Output
3 ch.1 Output GND
4 ch.1−ve Phase Output
5 Standby
6 ch.1 Input

■ Absolute Maximum Ratings

Parameter Symbol Ratings Unit

Supply voltage
Supply current I
Power dissipation
Operating ambient temperature T
Storage temperature T

Note) *1: Without input signal,VCC is up to 24 V

*2:Ta = 75 °C.

*1

2

*

V

CC

CC

P

D

opr

stg

Pin No. Description

7 Pre GND
8 ch.2 Input
9 Mute

10 ch.2 −ve Phase Output
11 ch.2 Output GND
12 ch.2 +ve Phase Output

24 V

6.0 A

38.5 W

−25 to +75 °C

−55 to +150 °C

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

CC

6.0 to 18.0 V

■ Electrical Caracteristics at VCC = 12 V, RL = 4 Ω, freq. = 1 kHz, 2 channel outputs, Ta = 25 °C

Parameter Symbol Conditions Min Typ Max Unit

Quiescent circuit current I
Output noise voltage

*1

V
Voltage gain G
Total harmonic distortion

*2

THD VIN = 20 mV  0.07 0.4 %
Maximum output power P
Channel balance CB VIN = 20 mV −10 1dB
Channel crosstalk

*2

Output offset voltage V
Ripple rejection

*1

Standby current I
Muting effects

Note) *1: With a filter band 20 Hz to 20 kHz(12 dB/OCT)used.

*2: With a filter band 400 Hz to 30 kHz used.

*2

MT VIN = 20 mV 70 80  dB

VIN = 0 mV  100 210 mA

CQ

VIN = 0 mV,RG = 6.2 kΩ0.27 0.5 mVrms

NO

VIN = 20 mV 38 40 42 dB

VC

THD = 10 % 10 12  W

O

CT VIN = 20 mV,RG = 6.2 kΩ 55 70  dB

RG = 6.2 kΩ−350 0 350 mV

OFF

RR VR = 1 V

VIN = 0 mV  110µA

STB

= 120 Hz,RG = 6.2 kΩ 50 60  dB

rms,fR

2