CXA2094 Просмотр технического описания (PDF) - Sony Semiconductor

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CXA2094

US Audio Multiplexing Decoder

Sony Semiconductor 

CXA2094Q

Pin

No.

Symbol Pin

voltage

26 NC

—

28 VE

4.0V

Equivalent circuit

26

VCC

7.5k

147

28

Description

—

Variable de-emphasis

integrating pin.

(Connect a 2700pF capacitor

and a 3.3kΩ resistor in series

between this pin and GND.)

29 NC

—

30 NC

—

31 NC

—

29

—

30

—

31

—

Vcc

32 VEWGT

4.0V 32

580

147

580

8k

33 VETC

1.7V

×4 ×4

4k

↓ 50µ

2.9V

4V

36k

Weight the variable

de-emphasis control effective

value detection circuit.

(Connect a 0.047µF capacitor

and a 3kΩ resistor in series

between this pin and GND.)

30k

↓ 8µ

4k

↓ 50µ

Vcc

33

20k

↓ 7.5µ

Determine the restoration

time constant of the variable

de-emphasis control effective

value detection circuit.

(The specified restoration

time constant can be obtained

by connecting a 3.3µF

capacitor between this pin

and GND.)

–7–

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