CXA2074S 查看數據表（PDF） - Sony Semiconductor

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CXA2074S

US Audio Multiplexing Decoder

Sony Semiconductor 

Pin No.

QFP SDIP

Symbol

Pin

voltage

Equivalent circuit

CXA2074Q/S

Description

15 18 VGR

1.3V

11k

3k 147

9.7k 19.4k VCC

×4

18

2.06k

(15)

Band gap reference output

pin.

(Connect a 10µF capacitor

11k

11k between this pin and GND.)

16 19 IREF 1.3V

VCC

40k

40k 30k 30k 15k 30k

×2

30p 1.8k

6.3k

16k

VCC

19

147

(16)

Set the filter and VCO

reference current. The

reference current is adjusted

with the BUS DATA based

on the current which flows to

this pin.

(Connect a 62kΩ (±1%)

resistor between this pin and

GND.)

17 20 GND

—

18 21 SAPTC 4.5V

20

(17)

VCC

8k

3k

10k

1k

VCC

21

(18)

4k

↓ 50µ

Analog block GND.

Set the time constant for the

SAP carrier detection circuit.

(Connect a 4.7µF capacitor

between this pin and GND.)

19 22 VCC

—

22

(19)

Supply voltage pin.

–8–

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