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CXA2078Q

I²C Bus-Compatible Audio/Video Switch with Electronic Volume

Sony Semiconductor 

Pin

No.

Symbol

Pin

voltage

34 MONO

4.5V

CXA2078Q

Equivalent circuit

VCC = 12V

VCC = 9V

75µA

200

34

200

20k

75µA

Description

Audio mono signal output.

3

BIAS_

VIDEO

3.9V

VCC = 12V

11k

3

200

9k

VCC = 9V

14µA

Reference Bias for video

circuit.

Connected to GND with

capacitor.

23

BIAS_

AUDIO

4.5V

VCC = 12V

20k

23

20k

VCC = 9V

7µA

Reference Bias for audio

circuit.

Connected to GND with

capacitor.

37 FNC_TVB

38 FNC_TVA

—

VCC = 12V

37

38

20k

VCC = 9V

40k

2.7V

I2C controlled output

giving 0/2V.

Maximum load current

= 800µA

–5–

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