TDA7419_09 datasheet(14/40 Pages) STMICROELECTRONICS

14 / 40 page

Description of the audio processor

TDA7419

14/40

Description of the audio processor

4.1

Audio processor features

●

Input Multiplexer

–

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

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SE1: stereo single-ended input

–

SE2: stereo single-ended input

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

–

In-Gain 0 to 15dB, 1dB steps

–

internal offset-cancellation (AutoZero)

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separate second source-selector

●

Mixing stage

–

mixable to front speaker-outputs

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Loudness

–2nd order frequency response

–

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

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15 dB with 1 dB steps

–

selectable low and high frequency boost

–

selectable flat-mode (constant attenuation)

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Volume

–

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

–

soft-step control with programmable blend times

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Bass

–2nd order frequency response

–

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

–

Q programmable 1.0/1.25/1.5/2.0

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DC gain programmable

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-15 to 15 dB range with 1 dB resolution

●

Middle

–2nd order frequency response

–

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

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Q programmable 0.5/0.75/1.0/1.25

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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

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