CXA2074Q/S データシートの表示（PDF） - Sony Semiconductor

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CXA2074Q/S

US Audio Multiplexing Decoder

Sony Semiconductor 

CXA2074Q/S

Pin No.

QFP SDIP

Symbol

Pin

voltage

Equivalent circuit

VCC

7.5k

26 28 VE

4.0V

147

28

(26)

Description

Variable de-emphasis

integrating pin.

(Connect a 2700pF capacitor

and a 3.3kΩ resistor in series

between this pin and GND.)

27 29

VEWGT 4.0V

29

(27)

580

147

580

8k

28 30 VETC 1.7V

×4 ×4

4k

↓ 50µ

Vcc

2.9V

4V

36k

30k

4k

↓ 8µ

↓ 50µ

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.)

Vcc

30

(28)

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.)

30 31 VEOUT 4.0V

Vcc

5P

580

31

(30)

580

10k

Variable de-emphasis output

pin.

(Connect a 4.7µF non-polar

capacitor between Pins 31

(30) and 32 (31).)

– 10 –

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