描述 Description

The CXA2546Q 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.

特性 Features

? Loudness

? Volume control

(from 0 dB to –80 dB, –∞ dB :

Fine (1 dB-step)

Coarse (2 dB-step)

? Balance

? Tone control

(3-band, 2 dB-step from –15 dB to +15 dB)

? Fader

2 dB-step to –20 dB, –25 dB, –30 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