TDA4443 datasheet(1/7 Pages) STMICROELECTRONICS

Part #	TDA4443

Description	MULTISTANDARD VIDEO IF AMPLIFIER

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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TDA4443

MULTISTANDARD VIDEO IF AMPLIFIER

December 1992

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IF INPUT

STANDARD SWITCHING

GROUND

IF AGC TIME CONSTANT

DELAYED TUNER AGC OUTPUT

TUNER AGC ADJUST

GATING PULSE INPUT

REFERENCE LC NETWORK

IF INPUT

GROUND

NOT TO BE CONNECTED

VIDEO SIGNAL OUTPUT

DISCHARGE TIME CONSTANT

REFERENCE LC NETWORK

SUPPLY VOLTAGE V CC

PIN CONNECTIONS

DIP16

(Plastic Package)

ORDER CODE : TDA4443

.

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.

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