TDA8944J
2 x 7 W stereo Bridge Tied Load (BTL) audio amplifier
Rev. 02 — 14 February 2000
Product specification
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1.
General description
The TDA8944J is a dual-channel audio power amplifier with an output power of
2
×
7 W at an 8
Ω
load and a 12 V supply. The circuit contains two Bridge Tied Load
(BTL) amplifiers with an all-NPN output stage and standby/mute logic. The TDA8944J
comes in a 17-pin DIL-bent-SIL (DBS) power package. The TDA8944J is
printed-circuit board (PCB) compatible with all other types in the TDA894x family.
One PCB footprint accommodates both the mono and the stereo products.
2.
Features
Few external components
Fixed gain
Standby and mute mode
No on/off switching plops
Low standby current
High supply voltage ripple rejection
Outputs short-circuit protected to ground, supply and across the load
Thermally protected
Printed-circuit board compatible.
3.
Applications
Mains fed applications (e.g. TV sound)
PC audio
Portable audio.
4.
Quick reference data
Table 1:
Quick reference data
Symbol Parameter
Conditions
Min
Typ
Max
Unit
V
CC
supply voltage
6
12
18
V
I
q
quiescent supply current
V
CC
= 12 V; R
L
=
∞
-
24
36
mA
I
stb
standby supply current
-
-
10
μ
A
