Description
The TDA7418 includes a high performance audio procesor with fully integrated 3-Band filters to processs signals at audible frequencies. The digital control allows a full programming of the audioprocessor and filters characteristics..

FEATUREs
■ Input Multiplexer
   – PD/SE4: pseudo differential stereo input, programmable as single-ended input
   – SE1: stereo single-end input
   – SE2: stereo single-end input
   – SE3: stereo single-end input
   – input gain adjust from 0 to 15dB with 1dB steps
   – internal offset-cancellation (AutoZero)
■ Loudness
   – Second 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
   – second 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
   – second 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
   – -15 to 15dB range with 1dB resolution
■ Treble
   – second order frequency response
   – center frequency programmable in 4 steps (10KHz/12.5KHz/15KHz/17.5KHz)
   – -15 to 15dB range with 1dB resolution
■ Speaker
   – 4 independent soft step speaker controls, +15dB to -79dB with 1dB steps direct mute
■ Subwoofer
   – 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)