CXA1784AS View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

View to exact match

CXA1784AS

US Audio Multiplexing Decoder

Sony Semiconductor 

Pin

No.

Symbol

Pin

voltage

24 VCAIN 4.0V

25 VEOUT 4.0V

26 VETC 1.7V

28 SAPOUT 4.0V

Eqivalent circuit

VCC

47k

47k

20k

VCC

24

CXA2064M

Description

VCA input pin.

Input the variable

de-emphasis output signal

from Pin 25 via a coupling

capacitor.

Vcc

5P

580

25

580

10k

Variable de-emphasis output

pin.

(Connect a 4.7µF non-polar

capacitor between Pins 25

and 24.)

×4 ×4

4k

↓ 50µ

Vcc

26

20k

↓ 7.5µ

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.)

Vcc

5P

24k

↓ 10µ

580

580 10k

147

SAP FM detector output pin.

28

4k

↓ 50µ

–8–

Share Link: