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.

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