CXA2174 Ver la hoja de datos (PDF) - Sony Semiconductor

Número de pieza

componentes Descripción

fabricante

CXA2174

US Audio Multiplexing Decoder

Sony Semiconductor 

Pin

No.

Symbol

Pin

voltage

24 VETC 1.7V

25 VEOUT 4.0V

26 VCAIN 4.0V

27 VCATC 1.7V

CXA2174S

Equivalent circuit

Vcc

×4 ×4

24

4k

↓ 50µ

20k

↓ 7.5µ

Vcc

5P

580

25

580

10k

Description

Determine the restoration

time constant of the variable

de-rmphasis control effective

value detection circuit.

(the specified restoration time

constant can be obtained by

connecting a 3.3µF capacitor

between this pin and GND.)

Variable de-emphasis output

pin.

(Connect a 4.7µF non-polar

capacitor between Pins 25

and 26.)

VCC

47k

47k

20k

VCC

26

VCA input pin.

Input the variable

de-emphasis output signal

from Pin 25 via a coupling

capacitor.

VCC

×4

27

×4

↓

4k ↓

20k

50µ

7.5µ

Determine the restoration

time constant of the VCA

control effective value

detection circuit.

(the specified restoration

time constant can be

obtained by connecting a

10µF capacitor between this

pin and GND.)

–8–

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