Tda894Xj Stereo Audio Amplifier - Daewoo CP-885 Service Manual

Service manual WP 895/895F, CP885/885F
4-4 TDA894xJ Stereo Audio Amplif i er
The TDA8944J( TDA 8946J) is a dual-channel audio po wer amplifier with an output power of 2 x 7W (2 X 15W)
at an 8 load and a 12V supply. The circuit contains two Bridges Tied Load(BTL) amplif i ers with an all-NPN output
stage and standby/mute logic. The TDA8944J comes in a 17-pin DIL power package.
4-4-1- Features
- Few external components
- Fixed gain
- Standby and mute mode
- No on/off switching pop noise
- low standby current
- High supply voltage ripple rejection
- Outputs short-circuit protected to ground, supply and across the load
- Thermally protected
Pin description
Pin Symbol
1 OUT1-
2 GND1
3 Vcc1
4 OUT1+
5 n.c.
6 IN1+
7 n.c.
8 IN1-
9 IN2-
10 MODE
11 SVR
12 IN2+
Description
negative loudspeaker
terminal 1
ground channel 1
supply voltage channel 1
positive loudspeaker
terminal 1
not connected
poitive input1
not connected
negative input1
negative input2
mode selection input
half supply voltage
decoupling (ripple rejection)
positive input2
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