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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

supply voltage 6 12 18 V

quiescent supply current V

=12V; R

=∞ - 1522mA

stb

standby supply current - - 10 µA

1 2 3 4 5 6 ... 11 12

TDA8943SF 1

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TDA8943SF7 W mono Bridge Tied Load (BTL) audio ampliﬁer14 April 1999 Preliminary speciﬁcation1. General descriptionThe TDA8943SF is a single-channel a

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Philips TDA8943SF Manual do Utilizador Página 1

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