TDA7409 datasheet(3/25 Pages) STMICROELECTRONICS

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TDA7409

FEATURES:

Input Multiplexer

4 single-end stereo inputs

In-Gain 0..14dB, 1dB steps, 14..20dB, 2dB steps

Auto Zero

Beep

internal Beep with 3 frequencies

781Hz/1.56KHz/1.8KHz

Mixing stage

4 step-mixing-stage with mono or beep as mix-signals

Loudness

second order frequenciy response

programmable center frequency

15 x 1dB steps

selectable low & high frequency boost

selectable flat-mode (constant sttenuation)

Volume

1 dB attenuator

100dB range

soft-step control with programmable times

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

+15dB x 1dB steps

Treble

2nd order frequency response

center frequency programmable in 4 steps

10KHz/12.5KHz/15KHz/17.5KHz

+15dB x 1dB steps

Speaker

4 independent speaker controls in 1dB steps

control range 50dB with mute

Zero crossing attenuate

Subwoofer

Stereo output

attenuator range 50dB

Mute Functions

direct mute

digitally controlled Soft Mute with 4 programmable mute-times

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