CXA3107N Ver la hoja de datos (PDF) - Sony Semiconductor

Número de pieza

componentes Descripción

Fabricante

CXA3107N

IF Amplifier for M-ary FSK Pagers

Sony Semiconductor 

CXA3107N

Pin Description

Pin

Symbol

No.

Pin voltage

1 IF IN

1.4 V

Equivalent circuit

20k 20k

VCC

1.5k

1.5k

1

Description

IF limiter amplifier input.

2 GND

3 TH CONT

4 FSK REF

5 DISK

6 CHG OFF

—

—

0.2 V

1.4 V

—

GND

Ground.

VCC

Determines the level

comparator threshold value.

The threshold value can be

3

adjusted by inserting the

resistor between Pin 3 and

25k

VCC.

GND

Normally, short to VCC.

VCC

72

4

Connects the capacitor that

determines the low cut-off

frequency for the entire

system.

GND

5

20p

VCC

22k

20k

Connects the phase shifter of

FM detector circuit.

GND

72k

6

20k

100k

Sets off the quick charge

circuit current. The charge

current is off by setting Pin 15

low and Pin 6 high.

GND

—3—

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