آی سی TDA7718 یک پردازنده صوتی سه باند برای ضبط خودرو نوع smd می باشد.

3 band car audio processor

Description:
The TDA7718N 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
– FD1 / SE4+SE5: 1 full-differential input or 2 stereo single-ended inputs

■ 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 SoftMute 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



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