CXA1991 Просмотр технического описания (PDF) - Sony Semiconductor

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производитель

CXA1991

FM Pager/FM Multiplex Tuner

Sony Semiconductor 

CXA1991N

Pin

Pin voltage (V)

Symbol

No.

FM AM

15 FM MIX

1.1 1.1

Equivalent circuit

VCC

15

REG

11p

10k

Description

Load for mixer which resonates

at 10.7 MHz from internal

capacitance and external coil.

16 FM RF

1.1 1.1

18 FM RF IN 2.2 2.4

VCC

18

5k

REG

16

50k

FM RF amplifier circuit which is

connected to RF tank circuit

FM RF amplifier circuit which is

FM RF input.

17 AM RF IN 1.1 1.1

VCC

17

AM RF input which is

connected to bar antenna.

19 GND1

0

0

20 FE OUT

0.6 1.5

VCC

20

3k

Front-end ground.

15

FM Block

AM/FM IF output pin which is

connected to IF filter.

AM Block

—4—

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