Figure 2: Application Circuit

The five bands graphic equalizer is used in con-

junction with a TDA7318 (or another audioproces-

sor of the SGS-THOMSON 731X family).

The audioprocessor bass and treble tone can fur-

nish two extra filter bands.

Application requiring higher number of external

equalizer bands could be implemented by cas-

cading 2 or more TDA7317 devices. In fact the

dedicated ADDR pin allows 2 addresses selec-

tion. Anyway, the address of the graphic equalizer

is different from the audioprocessor one.

For example 11 bands are implemented by use of

2 TDA7317 plus an audioprocessor (TDA731X

family).

In case one filtering cell is not needed, a short cir-

cuit must be provided between the P1xy and

P2xy pins.

TDA7317

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