TDA4443 データシートの表示（PDF） - STMicroelectronics
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TDA4443 Datasheet PDF : 7 Pages
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TDA4443
MULTISTANDARD VIDEO IF AMPLIFIER
. SWITCHING OFF THE IF AMPLIFIER WHEN
OPERATING IN VTR MODE
. DEMODULATION OF NEGATIVE OR POSI-
TIVE IF SIGNALS. THE OUTPUT REMAINS
ON THE SAME POLARITY IN EVERY CASE
. IF AGC AUTOMATICALLY ADJUSTED TO
THE ACTUAL STANDARD
. TWO AGC POSSIBILITIES FOR B/G MODE :
1. GATED AGC
2. UNGATED AGC ON SYNC. LEVEL AND
CONTROLLED DISCHARGE DEPENDENT
ON THE AVERAGE SIGNAL LEVEL FOR VTR
AND PERI TV APPLICATIONS
FOR STANDARD L : FAST AGC ON PEAK
WHITE BY CONTROLLED DISCHARGE
. POSITIVE OR NEGATIVE GATING PULSE
. EXTREMELY HIGH INPUT SENSITIVITY
. LOW DIFFERENTIAL DISTORTION
. CONSTANT INPUT IMPEDANCE
. VERY HIGH SUPPLY VOLTAGE REJECTION
. FEW EXTERNAL COMPONENTS
. LOW IMPEDANCE VIDEO OUTPUT
. SMALL TOLERANCES OF THE FIXED VIDEO
SIGNAL AMPLITUDE
. ADJUSTABLE, DELAYED AGC FOR PNP
TUNERS
DESCRIPTION
The TDA4443 is a Video IF amplifier with standard
switch for multistandard colour or monochrome TV
sets, and VTR’s.
DIP16
(Plastic Package)
ORDER CODE : TDA4443
PIN CONNECTIONS
IF INPUT
1
STANDARD SWITCHING
2
GROUND
3
IF AGC TIME CONSTANT
4
DELAYED TUNER AGC OUTPUT
5
TUNER AGC ADJUST
6
GATING PULSE INPUT
7
REFERENCE LC NETWORK
8
16
IF INPUT
15
GROUND
14
NOT TO BE CONNECTED
13
SUPPLY VOLTAGE V CC
12
NOT TO BE CONNECTED
11
VIDEO SIGNAL OUTPUT
10
DISCHARGE TIME CONSTANT
9
REFERENCE LC NETWORK
December 1992
1/7
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