Description The CXA2547Q is a 2-channel electronic volume IC. A 34-bit serial data input controls the level and characteristics of the output signal. It may be used in car stereos and general audio systems. Features • Loudness • Volume control (from 0 dB to –80 dB, –∞ dB : Fine (1 dB-step) Coarse (8 dB-step) • Balance • Tone control (2-band, 2 dB-step from –15 dB to +15 dB) • Fader 2 dB-step to –20 dB, –25 dB, –35 dB, –45 dB, –60 dB, –∞ dB) • Input and gain selector (4 channels) • Serial data control (DATA, CLK, CE) • Single 8 V power supply • Zero-cross detection circuit (L/R independent operation for the volume block) • Timer • Power-off mute • Countermeasure to the noise of the portable telephone
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