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Service manual SC-150
-30-
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
not connected
6 IN1+ poitive input1
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)
1
13
14
15
16
17
2
IN2+
n.c
OUT2-
nogative loudspeaker terminal 2
ground channel 2
supply voltage channel 2
positive loudspeaker terminal 2
GND2
Vcc2
OUT2+
positive input2
4-4 TDA8946J Stereo Audio Amplifier
The TDA8946J is a dual-channel audio po wer amplifier with an output power of 2 X 15W
at an 8 load and a 18V supply. The circuit contains two Bridges Tied Load(BTL) amplifiers with an all-NPN output
stage and standby/mute logic. The TDA8946J 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