CXA1744AR Просмотр технического описания (PDF) - Sony Semiconductor

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CXA1744AR

IF Amplifier for Digital Cordless Telephone

Sony Semiconductor 

CXA1744AR

Pin

No.

Symbol

Typical pin

voltage

37 MIXOUT

1.4V

Equivalent circuit

MIXVCC

290

37

Description

Mixer output.

38 MIXIN2

39 MIXIN1

42

REF

40 BUFPAS

41

LOIN

44 MULTIOUT

1.2V

1.75V

—

42

1.5k

39

38

40

41

2k

44

GND

Mixer RF signal differential input and

MIXVCC

bias.

1k

Connect a decoupling capacitor to

1.5k

REF.

1.25V

GND

MIXVCC

Mixer local signal input.

Connect a decoupling capacitor to

BUFPAS. Input the local signal to

LOIN.

2k

1.75V

GND

MIXVCC

Multiplier current output.

Connect a tank circuit between this

pin and power supply.

47

OSCC

—

48

OSCB

47

2.75V

48

GND

The Colpitts-type oscillation circuit is

MIXVCC composed by connecting a crystal

10k

10k

oscillator.

Input to the OSCC pin when using an

external oscillator.

DET

GND

—7—

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