Daewoo DTF-2950-100D, Service Manual, Page: 36 / 92

CP-850FX Service Manual
Europe R&D 35
4.6 TDA8946J STEREO AUDIO AMPLIFIER
The TDA 8946J is a dual-channel audio power amplifier with an output power of 2 x 15 W at an
8
Ω
load and a 18 V supply. The circuit contains two Bridge Tied Load (BTL) amplifiers with an
all-NPN output stage and standby/mute logic. The TDA8946J comes in a 17-pin DIL-bent-
SIL(DBS) power package. The TDA8946J is printed-circuit board compatibel with all other types
in the TDA894x family.
One PCB footprint accommodates both the mono and the stereo products.
4.6.1 FEATURES
ƒ Few external components
ƒ Fixed gain
ƒ Standby and mute mode
ƒ No on/off switching plops
ƒ Low standby current
ƒ High supply voltage ripple rejection
ƒ Outputs short-circuit protected to ground, supply and across the load
ƒ Thermally protected
ƒ Printed-circuit board compatible
Pin description
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 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)
12 IN2+ positive input2
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