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TDA4453

Video IF Amplifier for Multistandard TV Receiver and VTR

Appliances

Technology:

Bipolar

Features

D

Interference suppression

D

Standard B/G-L suitable, processes negatively and

positively modulated IF-signals with equal polarity of

the output signal

D

Fast AGC by controlled discharge of the

AGC capacitor

Standard L mode: AGC acting on peak white level,

capacitor discharge control by averaged video signal

Standard B/G: AGC acting on the sync. pulse peak

D

Ultra white inverter and ultra black limiter for

reducing transmission interference

D

Internally noise protected gain control, no flyback

pulses required

D

Expanded video frequency response allows the

demodulation of amplitude modulated MAC signals

D

D

D

D

Small differential error

Constant input impedance

Video output voltage with narrow tolerance

Adapted output for insertion of ceramic transducers as

intrinsic sound trap

TEMIC video IF type programme - permits building

block system for video IF module

D

High input sensitivity

D

Minimal intermodulation interference

D

Connecting and basic circuitry compatible to the

Figure 1. Block diagram

TELEFUNKEN Semiconductors

Rev. A1, 15-Aug-96

1 (7)

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