TDA4453

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) TDA4453 Pin Description Pin 1,16 2 3,15 4 5 6 Function IF-input Standard switch: open B/G ground L Ground IF-AGC storage capacitor AGC (tuner control) Tuner AGC take over Pin 7 8,9 10 11 12 13 14 Function Not connected Demodulator circuit Average capacitor standard L Video output Not connected Supply voltage Not connected ...