TDA7404DTR Datasheet, PDF (6/35 Pages) STMicroelectronics – Car radio signal processor

Detailed features
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Detailed features
● Input multiplexer
– 1 pseudo-differential stereo input (selectable single end stereo input)
– 3 single-end stereo inputs
– 1 differential mono input
– In-Gain 0..14 dB, 1 dB steps, 14..20 dB, 2 dB steps
– Auto Zero
● Beep
– internal beep with 3 frequencies
– 781 Hz/1.56 kHz/1.8 kHz
● Mixing stage
– 4 step-mixing-stage with mono or beep as mix-signals
● Loudness
– second order frequency response
– programmable center frequency
– 15 x 1 dB steps
– selectable low and high frequency boost
– selectable flat-mode (constant attenuation)
● Volume
– 1 dB attenuator
– 100 dB range
– soft-step control with programmable times
● Bass
– 2^nd 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
– DC gain programmable
– +15 dB x 1 dB steps
● Treble
– 2^nd order frequency response
– center frequency programmable in 4 steps
– 10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz
– +15 dB x 1 dB steps
● Speaker
– 4 independent speaker controls in 1 dB steps
– control range 50 dB with mute
– Zero crossing attenuate
● Subwoofer
– Stereo output
– attenuator range 50 dB
● Mute functions
– direct mute
– digitally controlled Soft Mute with 4 programmable mute-times
TDA7404
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