TDA7437N_06 Datasheet, PDF (1/34 Pages) STMicroelectronics – Digitally controlled audio processor

TDA7437N
Digitally controlled audio processor
Features
■ Input multiplexer
– Four stereo, one mono input, and one
differential input
– Selectable input gain for optimal adaptation
to different sources
■ Fully programmable loudness function
■ Volume control in 1dB steps including gain up
to 16dB
■ Zero crossing mute, soft mute and direct mute
■ Bass and treble control
■ Four speaker attenuators- four independent
speakers control in 1dB steps for balance and
fader facilities
■ Pause detector programmable threshold
■ All functions programmable via serial I²C bus
Description
The audioprocessor TDA7437N is an upgrade of
the TDA731X audioprocessor family.
Due to a highly linear signal processing, using
CMOS-switching techniques instead of standard
bipolar multipliers, very low distortion and very
LQFP44
low noise are obtained. Several new features like
softmute, and zero-crossing mute are
implemented. The soft Mute function can be
activated in two ways either via the serial bus
(Mute byte, bit D0), or directly on pin 28 through
an I/O line of the microcontroller
Very low DC stepping is obtained by use of a
BICMOS technology.
Order codes
Part numbers
E-TDA7437N
E-TDA7437NTR
Package
LQFP44 (10x 10x 1.4mm)
LQFP44 (10x 10x 1.4mm)
Packing
Tray
Tape and reel
December 2006
Rev 2
1/34
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