TDA7406 Datasheet, PDF (10/64 Pages) STMicroelectronics – Car radio signal processor

Audioprocessor part
3
Audioprocessor part
TDA7406
3.1
Features:
● Input multiplexer
– Pseudo differential CDC stereo input, programmable as single-ended input.
– 3 single-ended stereo inputs.
– 4single-ended mono inputs.
– Input gain adjust 0...15dB in 1dB steps.
– Internal offset-cancellation (autozero).
● Beep
– Internal beep generator with 4 different frequencies.
● Mixing stage
– Beep, Phone- and Navi-Input mixable to all speaker outputs.
– TIM or tuner (FM/AM) programmable as fourth mixing source.
– Level control range of 95dB (+15...-79db).
● Loudness
– Loudness programmable center frequency and filter slope.
– 0...19dB attenuation in 1dB steps.
– selectable flat-mode (constant attenuation).
● Volume
– Gain/Attenuation with 0.5dB step resolution.
– soft-step control with programmable blend times.
– 110dB range (+32...-79db).
● Equalizer
– Seven bands equalizer with 2^nd order frequency response switch-capacitors filters.
– Center frequency programmable for lowest and highest filter.
– Programmable quality factor in four steps for each filter.
– ±15dB range with 1dB steps.
● Spectrum analyzer
– seven bandpass 2^nd order frequency response switch-capacitors filters
– Programmable quality factor for different visual appearance
– Analog output
– Controlled by external serial clock
● High pass Filter
– 2nd order Butterworth high pass with programmable cut-off frequency
– Selectable flat-mode
● Speakers
– 4 independent speaker controls with separate mute.
– Control range 95dB (+15...-79dB) in 1dB steps with soft step.
– 4 independent programmable mix inputs with 50% mixing ratio
● Subwoofer
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