The TDA7718B 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.
●Key Features
● Input multiplexer
● QD1: quasi-differential stereo inputs
● SE1: stereo single-ended input
● SE2: stereo single-ended input
● SE3: stereo single-ended input
● FD full-differential or quasi-differential input
● Loudness
● 2nd order frequency response
● Programmable center frequency(400 Hz / 800 Hz / 2400 Hz)
● 15 dB with 1 dB steps
● Selectable high frequency boost
● Selectable flat-mode (constant attenuation)
● Volume
● +23 dB to -31 dB with 1 dB step resolution
● Soft-step control with programmable blend times
● Bass
● 2nd order frequency response
● Center frequency programmable in 4 steps(60 Hz / 80 Hz / 100 Hz / 200 Hz)
● Q programmable 1.0/1.25/1.5/2.0
● DC gain programmable
● -15 dB to 15 dB range with 1 dB resolution
● Middle
● 2nd order frequency response
● Center frequency programmable in 4 steps(500 Hz / 1 kHz / 1.5 kHz / 2.5 kHz)
● Q programmable 0.75/1.0/1.25
● -15 dB to 15 dB range with 1 dB resolution
● Treble
● 2nd order frequency response(10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz)
● Center frequency programmable in 4 steps(10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz)
● -15 dB to 15 dB with 1 dB resolution
● Speaker
● 4 independent soft-step speaker controls
● +15 dB to -79 dB with 1 dB steps
● Direct mute
● Subwoofer
● 2nd order low pass filter with programmable cut off frequency(55 Hz / 85 Hz / 120 Hz / 160 Hz)
● 2 independent soft-step level control,+15 dB to –79 dB with 1 dB steps
● Mute functions
● Direct mute
● Digitally controlled soft-mute with 4 programmable mute-times (0.48 ms/0.96 ms/8 ms/16 ms)
● Offset detection
● Offset voltage detection circuit for on-board power amplifier failure diagnosis
