TDA7718N

3 BAND汽车音频处理器 3 band car audio processor

The 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**

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Offset detectionOffset voltage detection circuit for on-board power amplifier failure diagnosis

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Mute functionsDirect muteDigitally controlled SoftMute with 4 programmable mute-times 0.48 ms/0.96 ms/8 ms/16 ms

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Speaker4 independent soft step speaker controls+15 dB to -79 dB with 1 dB stepsDirect mute

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Treble2nd order frequency response 10 kHz / 12.5 kHz / 15 kHz / 17.5 kHzCenter frequency programmable in 4 steps 10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz-15 dB to 15 dB with 1 dB resolution

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Input multiplexerQD1: quasi-differential stereo inputsSE1: stereo single-ended inputSE2: stereo single-ended inputSE3: stereo single-ended inputFD1 / SE4+SE5: 1 full-differential input or 2 stereo single-ended inputs

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Volume+23 dB to -31 dB with 1 dB step resolutionSoft-step control with programmable blend times

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Loudness2nd order frequency responseProgrammable center frequency 400 Hz / 800 Hz / 2400 Hz15 dB with 1 dB stepsSelectable high frequency boostSelectable flat-mode constant attenuation

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Middle2nd order frequency responseCenter frequency programmable in 4 steps 500 Hz / 1 kHz / 1.5 kHz / 2.5 kHzQ programmable 0.75/1.0/1.25-15 dB to 15 dB range with 1 dB resolution

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Subwoofer2nd order low pass filter with programmable cut off frequency 55 Hz / 85 Hz / 120 Hz / 160 Hz2 independent soft step level control, +15 dB to –79 dB with 1 dB steps

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Bass2nd order frequency responseCenter frequency programmable in 4 steps 60 Hz / 80 Hz / 100 Hz / 200 HzQ programmable 1.0/1.25/1.5/2.0DC gain programmable-15 dB to 15 dB range with 1 dB resolution