(PDF) TDA4439 Datasheet - Video IF Amplifier for Multistandard TV and VTR

Número de pieza	TDA4439
Descripción	Video IF Amplifier for Multistandard TV and VTR
Fabricantes	TEMIC Semiconductors
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No Preview Available ! TELEFUNKEN Semiconductors TDA4439 Video IF Amplifier for Multistandard TV and VTR Technology: Bipolar Features D Standard B/G-L suitable, processes negatively and positively modulated IF-signals with equal polarity of the output signal D Ultra white inverter and ultra black limiter for reduc- ing transmission interference D Internally noise protected gain control, no flyback pulses required D Expanded video frequency response allows the de- modulation of amplitude modulated MAC signals D High input sensitivity 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 The direction of the AFC curve is selectable indepen- dently from the standard switch Case: DIP18 Rev. A1: 14.09.1995 Figure 1. Block diagram 1 (7) 1 page TELEFUNKEN Semiconductors TDA4439 Rev. A1: 14.09.1995 Figure 3. Test circuit Coil data: Toko 7 KN L1=6 turns, 0.2 CuL L2=4 turns, 0.2 CuL 5 (7) 5 Page

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