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TDA4443 Datasheet(PDF) 2 Page - STMicroelectronics

Part # TDA4443
Description  MULTISTANDARD VIDEO IF AMPLIFIER
PDF  7 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA4443 Datasheet(HTML) 2 Page - STMicroelectronics

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16
1
WIDE BAND AMPLIFIER
DEMODULATOR
VIDEO
IW
11
10
9
8
7
SUPPLY
UNIT
GATING
AMPLIFIER
13
45
6
VIDEO
OUTPUT
GATING
PULSE
IF INPUT
IF INPUT
TUNER
AGC
OUTPUT
TUNER
AGC
ADJUST
V
CC
2
STANDARD
SWITCH
3
15
V
S
CONTROL
AMPLIFIER
TUNER
CONTROL
TDA4443
BLOCK DIAGRAM
GENERAL DESCRIPTION
This video IF processing circuit integrates the fol-
lowing functional blocks :
.
Three symmetrical, very stable, gain controlled
wideband amplifier stages - without feedback
by a quasi-galvanic coupling.
.
Demodulator controlled by the picture carrier
.
Video output amplifier with high supply voltage
rejection
.
Polarity switch for the video output signal
.
AGC on peak white level
.
Gated AGC
.
Discharge control
.
Delayed tuner AGC
.
At VTR Reading mode the video output signal
is at ultra white level
TDA4443
2/7



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