TDA4445 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA4445' PDF : 6 Pages View PDF
. 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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