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E97Y19B91-TE

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any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

Absolute Maximum Ratings (Ta=25 °C)

• Supply voltage

13

V

• Operating temperature

Topr

–40 to +85

°C

• Storage temperature

Tstg

–65 to +150

°C

• Allowable power dissipation

350

mW

(Ta=85 °C)

Recommended Operating Conditions

Supply voltage

7 to 12

V

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

Structure

Bipolar silicon monolithic IC

2-band Electronic Volume

48 pin QFP (Plastic)

CXA2547Q

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