Daewoo DDT-21H9ZZF, Service Manual

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Service Manual CP-099F
Pin Symbol Description
1 OUT1- negative loudspeaker
terminal 1
2 GND1 ground channel 1
3 Vcc1 supply voltage channel 1
4 OUT1+ positive loudspeaker
terminal 1
5 n.c. not connected
6 IN1+ positive input 1
7 n.c. not connected
8 IN1- negative input1
9 IN2- negative input2
10 MODE mode selection input
11 SVR half supply voltage
decoupling (ripple rejection)
12 IN2+ positive input2
4-4 TDA894xJ Stereo Audio Amplifier
The TDA8944J is a dual-channel audio power amplifier with an output power of 2 x 5W
at an 8 load and a 12V supply. The circuit contains two Bridges Tied Load(BTL) amplifiers 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