TDA7405(2001) 데이터 시트보기 (PDF) - STMicroelectronics

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TDA7405
(Rev.:2001)

EQUALIZER CARRADIO SIGNAL PROCESSOR

STMicroelectronics 

TDA7405

1 AUDIOPROCESSOR PART

Features:

Input Multiplexer

2 fully differential CD stereo inputs with programmable attenuation

1 single-ended stereo input

2 differential mono input

1 single-ended mono input

In-Gain 0..15dB, 1dB steps

internal Offset-cancellation (AutoZero)

separate second source-selector

Beep

internal Beep with 3 frequencies + diagnostic setting (19kHz tone)

Mixing stage

Beep, Phone,Navigation and FM mixable to all speaker-outputs (see Figure 20)

programmabe Voice-Band Filter

Loudness

programmable center frequency and frequency response

15 x 1dB steps

selectable flat-mode (constant attenuation)

Volume

0.5dB attenuator

100dB range

soft-step control with programmable times

Bass

2nd order frequency response

center frequency programmable in 8 steps

DC gain programmable

± 15 x 1dB steps

Treble

2nd order frequency response

center frequency programmable in 4 steps

± 15 x 1dB steps

Equalizer

two stereo equalizing-filters for separate front/rear adaption

1st filter center-frequency programmable in 16 steps (4 steps/octave, min 63Hz, max

840Hz)

2nd filter center-frequency programmable in 16 steps (4 steps/octave, min 300Hz,

max 4kHz)

quality factor programmable in 4 steps

± 15 x 1dB steps

selectable flat-mode

Speaker

4 independent speaker controls in 1dB steps

control range 95dB

separate Mute

Mute Functions

direct mute

digitally controlled SoftMute with 4 programmable mute-times

Pause Detector

programmable threshold

Compander

dynamic range compression for use with CD

2:1 compression rate

programmable max. gain

4/56

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