TDA7419 datasheet(4/30 Pages) STMICROELECTRONICS

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TDA7419

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Audio Processor Features:

Input Multiplexer

QD / SE: quasi-differential stereo inputs, with selectable single-ended mode

SE1: stereo single-ended input

SE2: stereo single-ended input

SE3 / AC2IN: stereo single-ended input / DSO filter input

In-Gain 0 to 15dB, 1dB steps

internal offset-cancellation (AutoZero)

separate second source-selector

Mixing stage

mixable to front speaker-outputs

Loudness

2nd order frequency response

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

15dB with 1dB steps

selectable low & high frequency boost

selectable flat-mode (constant attenuation)

Volume

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

soft-step control with programmable blend 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

-15 to 15dB range with 1dB resolution

Middle

2nd order frequency response

center frequency programmable in 4 steps (500Hz/1KHz/1.5KHz/2.5KHz)

Q programmable 0.5/0.75/1.0/1.25

DC gain programmable

-15 to 15dB range with 1dB resolution

Treble

2nd order frequency response

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

-15 to 15dB range with 1dB resolution

Spectrum analyzer

seven bandpass filters

2nd order frequency response

programmable Q factor for different visual appearance

analog output

controlled by external serial clock

Speaker

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

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

direct mute

Subwoofer

2nd order low pass filter with programmable cut off frequency

single-ended mono output

independent soft step level control, +15dB to -79dB with 1dB steps

Mute Functions

direct mute

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

123ms)

Effect

gain effect, or high pass effect with fixed external components

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