Description
The TDA7719 is a high performance signal processor specifically designed for car radio applications. The device includes a high performance audioprocessor with fully integrated audio filters and new Soft Step architecture. The digital control allows programming in a wide range of filter characteristics. By the use of BCMOS process and liner signal processing low distortion and low noise are obtained.

Features
■ Input multiplexer
   – Multiple input configuration for different application
■ Loudness
   – 2nd order frequency response
   – Programmable center frequency
   – 15 dB with 1 dB steps
   – Selectable high frequency boost
   – Selectable flat-mode
■ Volume
   – +15 dB to -15 dB with 1 dB step resolution
   – Soft-step control with programmable blend times
■ Bass
   – 2nd order frequency response
   – Center frequency programmable in 4 steps
   – Q programmable 1.0/1.25/1.5/2.0
   – DC gain programmable
   – -15 to 15 dB range with 1 dB resolution
■ Middle
   – 2nd order frequency response
   – Center frequency programmable in 4 steps
   – Q programmable 0.5/0.75/1.0/1.25
   – -15 to 15dB range with 1dB resolution
■ Treble
   – 2nd order frequency response
   – Center frequency programmable in 4 steps
   – -15 to 15dB range with 1dB resolution
■ Speaker
   – 4 independent soft step speaker controls
   – 0dB to -79dB with 1dB steps
   – Direct mute
■ Subwoofer
   – 2nd order low pass filter with programmable cut off frequency
   – 2 independent soft step level control,
■ Mute functions
   – Direct mute
   – Digitally controlled SoftMute with 4
      programmable mute-times
■ Offset detection
   – Offset voltage detection circuit for on-board
      power amplifier failure diagnosis
■ Level meter
   – Provide rectified level voltage of main
      source signal (before loudness)
■ Rear seat selector
   – Full source selector for rear seat output
■ Mixing selector