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Description

The TDA7417 is an high performance signal processor specifically designed for car radio applications with fully integrated audio filters. The digital control allows a full programming of the audioprocessor in a wide range of filter characteristics.

By using BICMOS-process low distortion and low noise are obtained.

Features

■ Input Multiplexer

– QD: quasi-differential stereo inputs

– FD: full-differential stereo inputs

– Mono: Mono input

– SE1: stereo single-ended input

– SE2: stereo single-ended input

– In-Gain 0 to 15dB, 1dB step

– internal offset-cancellation (AutoZero)

■ IN/OUT control

– Selectable full-differential stereo inputs or Bass output

■ Loudness

– 2nd order frequency response

– programmable center frequency (400Hz/800Hz/2400Hz)

– 15dB with 1dB steps

– soft-step control with programmable blend times

– selectable low & high frequency boost

■ Volume

– +15dB to -79dB with 1dB step resolution

– soft-step control with programmable blend times

– multi-step control

■ Bass

– 2nd order frequency response

– center frequency programmable in 4 steps (60Hz/80Hz/100Hz/200Hz)

– Q programmable 1.0/1.25/1.5/2.0

– DC gain programmable

– -15 to 15dB with 1dB resolution

– soft-step control with programmable blend times

■ Treble

– 2nd order frequency response

– center frequency programmable in 4 steps (10KHz/12.5KHz/15KHz/17.5KHz)

– -15 to 15dB with 1dB resolution

■ High pass

– 2nd order frequency response

– center frequency programmable in 3 steps (80Hz/120Hz/160Hz)

■ Speaker

– independent soft step speaker controls, +15dB to -79dB with 1dB steps

– Independent programmable mix input with 50 mixing ratio for front speakers

– direct mute

– multi-step control

■ Mute Functions

– digitally controlled SoftMute with 3 programmable mute-times (0.48ms/0.96ms/123ms)