TDA7419 Datasheet, PDF (4/30 Pages) STMicroelectronics – 3 BAND CAR AUDIO PROCESSOR

TDA7419
3 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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