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.

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
  • 2ndorder 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
  • 2ndorder 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
  • 2ndorder 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
  • 2ndorder 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
  • 2ndorder 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

Supplier link: https://www.st.com/en/automotive-infotainment-and-telematics/tda7718b.html