3 Band Car Audio Processor 64Pin LQFP Tray
The 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**
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Input multiplexer
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QD0 to QD3: quasi-differential stereo input
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SE0 to SE4: stereo single-ended input
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Loudness
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2nd order frequency response
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Programmable center frequency 400 Hz/800 Hz/2400 Hz
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15 dB with 1 dB steps
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Selectable high frequency boost
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Selectable flat-mode constant attenuation
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Volume
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+23 dB to –23 dB with 1 dB step resolution
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Soft-step control with programmable blend times
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Bass
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2nd order frequency response
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Programmable center frequency 60/70/80/100//110/120/130/150 Hz
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Q programmable 1.0/1.25/1.5/2.0
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DC gain programmable
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-15 to 15 dB range with 1 dB resolution
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Soft-step control with programmable blend times
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Middle
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2nd order frequency response
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Programmable center frequency 500 Hz/1 kHz/1.5 kHz/2 kHz
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Q programmable 1.0/2.0
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-15 to 15 dB range with 1 dB resolution
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Soft-step control with programmable blend times
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Treble
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2nd order frequency response
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Center frequency programmable in 4 steps 10/12.5 /15/17.5 kHz
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-15 to 15 dB range with 1 dB resolution
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Soft-step control with programmable blend times
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High pass filter
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2nd order frequency response
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Programmable cut off frequency 50/60/80/100/120/150/180/220 Hz
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Low pass filter
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2nd order low pass filter
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Programmable cut off frequency
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50 Hz/60 Hz/80 Hz/100 Hz/120 Hz
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Speaker
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6 independent soft-step speaker controls
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+23 dB to –79 dB with 1 dB steps
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Soft-step control with programmable blend times
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Output driver
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Four dedicated outputs for an internal on-board power amplifier.
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Six 3.55 VRMS line-driver outputs for an external remote power amplifier
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Mute functions
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Direct mute
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Main/Sub channel: digitally controlled soft-mute with 4 programmable mute-times
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0.5 ms/4 ms/8 ms/16 ms
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Speaker: digitally controlled soft-mute with 4 programmable mute-times 4 ms/8 ms/32 ms/64 ms
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Spectrum analyzer
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7-band, fully integrated 2nd order band-pass filter with programmable filter quality for different visual behavior
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Selectable In-gain 0/2/4/6dB
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AC coupling
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Three AC-coupling input
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One AC-coupling output
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Offset detection
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Offset voltage detection circuit for on-board power amplifier failure diagnosis