TDA4445 데이터 시트보기 (PDF) - STMicroelectronics

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TDA4445

SOUND IF AMPLIFIER

STMicroelectronics 

. QUADRATURE INTERCARRIER DEMODU-

LATOR

. VERY HIGH INPUT SENSITIVITY

. GOOD SIGNAL TO NOISE RATIO

. FAST AVERAGING AGC

. IF AMPLIFIER CAN BE SWITCHED OFF FOR

VTR MODE

. GOOD AM SUPPRESSION

. OUTPUT SIGNAL STABILIZED AGAINST

SUPPLY VOLTAGE VARIATIONS

. VERY FEW EXTERNAL COMPONENTS

DESCRIPTION

TDA4445A :

Sound IF amplifier, with FM processing for quasi

parallel sound system.

TDA4445B :

Sound IF amplifier, with FM processing and AM

demodulator, for multi-standard sound TV appli-

ances.

TDA4445B additionnal :

Bistandard applications (B/G and L)

No adjustment of the AM demodulator

Low AM distortion

PIN CONNECTIONS

TDA4445A

TDA4445B

SOUND IF AMPLIFIER

DIP16

(Plastic Package)

ORDER CODE : TDA4445A - TDA4445B

IF INPUT

1

NOT TO BE CONNECTED

2

IF AGC TIME CONSTANT

3

NOT TO BE CONNECTED

4

NOT TO BE CONNE CTED FOR TDA4445A

AVE RAGING CAP ACITOR FOR TDA4445B

5

NOT TO BE CONNE CTED FOR TDA4445A

6

A.F. SOUND OUTPUT FOR TDA4445B

NOT TO BE CONNECTED

7

REFERENCE L.C. NETWORK

8

16

IF INPUT

15

NOT TO BE CONNECTED

14

NOT TO BE CONNECTED

13

GROUND

12

FM MODULATED SOUND OUTPUT

11

SUPPLY VOLTAGE

10

NOT TO BE CONNECTED

9

REFERENCE L.C. NETWORK

December 1992

1/6

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