SL1451

www.DataSheet4U.com ADVANCE INFORMATION 2042-2·1 SL1451 WIDEBAND PLL FM DETECTOR FOR SATELLITE TV The SL1451 is a phase locked loop demodulator for use in wideband FM systems. It is intended for use with an IF input frequency from 300MHz to 700MHz in satellite receivers. It consists of an input RF amplifier, signal level detector, UHF phase detector UHF oscillator and video/loop amplifier. Both positive and negative going video outputs are available. LOOP FEEDBACK 1 0V OSCILLATOR EMITTER 1 2 3 4 5 6 7 8 16 15 14 13 LOOP FEEDBACK 2 VIDEO OUTPUT VIDEO OUTPUT VCC RF IN RF IN RF AMP GAIN CONTROL AGC OUTPUT FEATURES I Complete PLL System for Wideband FM Demodulator I Noise Threshold Performance: 8dB (Typ.) I Low External Component Count I Positive and Negative going Video Output I Demodulates FM Signals with up to 28MHz p-p Deviation APPLICATIONS OSCILLATOR BASE OSCILLATOR VCC PHASE DETECTOR IN PHASE DETECTOR IN 0V SL1451 12 11 10 9 DP16 Fig. 1 Pin connections - top view I DBS Receivers I Wideband Data Communications Demodulation ORDERING INFORMATION SL1451 NA DP (16-lead plastic DIL package) ABSOLUTE MAXIMUM RATINGS Operating temperature range Supply voltage, VCC Storage temperature Junction temperature 210°C to180°C 11V 255°C to 1150°C 1175°C RF GAIN CONTROL 10 AGC PHASE DETECTOR INPUTS OUTPUT INPUT INPUT 9 6 7 LOOP FEEDBACK INPUT 1 1 VCC 13 680 RF INPUT RF INPUT 12 11 570 PHASE DETECTOR RF AMPLIFIER 570 VIDEO AMPLIFIER 680 16 2 14 15 VIDEO OUTPUT VIDEO OU...