General description, Features | Philips TDA8943SF instruction

TDA8943SF

7 W mono Bridge Tied Load (BTL) audio ampliﬁer

14 April 1999

Preliminary speciﬁcation

1. General description

The TDA8943SF is a single-channel audio power ampliﬁer with an output power of

7 W at an 8 Ω load and a 12 V supply. The circuit contains a Bridge Tied Load (BTL) ampliﬁer with an all-NPN output stage and standby/mute logic. The TDA8943SF comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF 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, see Table 3 “Product family overview”.

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
VCC	supply voltage		6	12	18	V
Iq	quiescent supply current	VCC = 12 V; RL = ∞	-	15	22	mA
Istb	standby supply current		-	-	10	μA