TDA2549

INTEGRATED CIRCUITS DATA SHEET TDA2549 I.F. amplifier and demodulator for multistandard TV receivers Product specification File under Integrated Circuits, IC02 April 1985 Philips Semiconductors Product specification I.F. amplifier and demodulator for multistandard TV receivers GENERAL DESCRIPTION TDA2549 The TDA2549 is a complete i.f. circuit with a.f.c., a.g.c., demodulation and video preamplification facilities for multistandard television receivers. It is capable of handling positively and negatively modulated video signals in both colour and black/white receivers. Features Gain-controlled wide-band amplifier providing complete i.f. gain Synchronous demodulator for positive and negative modulation Video preamplifier with noise protection for negative modulation Auxiliary video input and output (75 Ω) Video switch to select between auxiliary video input signal and demodulated video signal A.F.C. circuit with on/off switch and inverter switch A.G.C. circuit for positive modulation (mean level) and negative modulation (noise gate) A.G.C. output for controlling MOSFET tuners QUICK REFERENCE DATA Supply voltage (pins 13 and 21) Supply current (pins 13 and 21) I.F. input signal at Vo = 2 V (between pins 6 and 7) Video output voltage at Vi = 0 V (between pins 22 and 3) positive modulation negative modulation Gain control range Signal-to-noise ratio at Vi = 10 mV A.F.C. output voltage swing (pin 15) Max. tuner a.g.c. output current (pin 10) Video bandwidth (3 d...