The TDA7715 is a high performance signal processor specifically designed for car radio applications.
●The device includes a high performance audio processor 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
● QD0 to QD3: quasi-differential stereo input
● SE0 to SE4: stereo single-ended 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 –23 dB with 1 dB step resolution
● Soft-step control with programmable blend times
● Bass
● 2nd order frequency response
● Programmable center frequency (60/70/80/100//110/120/130/150 Hz)
● Q programmable 1.0/1.25/1.5/2.0
● DC gain programmable
● -15 to 15 dB range with 1 dB resolution
● Soft-step control with programmable blend times
● Middle
● 2nd order frequency response
● Programmable center frequency (500 Hz/1 kHz/1.5 kHz/2 kHz)
● Q programmable 1.0/2.0
● -15 to 15 dB range with 1 dB resolution
● Soft-step control with programmable blend times
● Treble
● 2nd order frequency response
● Center frequency programmable in 4 steps (10/12.5 /15/17.5 kHz)
● -15 to 15 dB range with 1 dB resolution
● Soft-step control with programmable blend times
● High pass filter
● 2nd order frequency response
● Programmable cut off frequency (50/60/80/100/120/150/180/220 Hz)
● Low pass filter
● 2nd order low pass filter
● Programmable cut off frequency
● (50 Hz/60 Hz/80 Hz/100 Hz/120 Hz)
● Speaker
● 6 independent soft-step speaker controls
● +23 dB to –79 dB with 1 dB steps
● Soft-step control with programmable blend times
● Output driver
● Four dedicated outputs for an internal (on-board) power amplifier.
● Six 3.55 VRMS line-driver outputs for an external (remote) power amplifier
● Mute functions
● Direct mute
● Main/Sub channel: digitally controlled soft-mute with 4 programmable mute-times
● (0.5 ms/4 ms/8 ms/16 ms)
● Speaker: digitally controlled soft-mute with 4 programmable mute-times (4 ms/8 ms/32 ms/64 ms)
● Spectrum analyzer
● 7-band, fully integrated 2nd order band-pass filter with programmable filter quality for different visual behavior
● Selectable In-gain 0/2/4/6dB
● AC coupling
● Three AC-coupling input
● One AC-coupling output
● Offset detection
● Offset voltage detection circuit for on-board power amplifier failure diagnosis
