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