SL1461

SL1461SA Wideband PLL FM Demodulator Advance Information DS4049 - 1.2 December 1994 The SL1461SA is a wideband PLL FM demodulator, intended primarily for application in satellite tuners. The device contains all elements necessary, with the exception of external oscillator sustaining network and loop feedback components, to form a complete PLL system operating at frequencies up to 800MHz. An AFC with window adjust is provided, whose output signal can be used to correct for any frequency drift at the head end local oscillator. AFC PUMP AFC WINDOW ADJUST V EE OSCILLATOR + OSCILLATOR – AGC BIAS AGC OUTPUT RF INPUT 1 2 3 4 5 6 7 8 16 15 AFC OUTPUT V CC VIDEO FEEDBACK + VIDEO – VIDEO + VIDEO FEEDBACK – VIDEO OUTPUT RF INPUT SL1461SA 14 13 12 11 10 9 FEATURES s Single chip PLL system for wideband FM demodulation s Simple low component count application s Allows for application of threshold extension s Fully balanced low radiation design s High operating input sensivity s Improved VCO stability with variations in supply or temperature s AGC detect and bias adjust s 75Ω video output drive with low distortion levels s Dynamic self biasing analog AFC s Full ESD Protection* * Normal ESD handling procedures should be observed MP16 Fig.1 Pin connections - top view APPLICATIONS s Satellite receiver systems s Data communications Systems ORDERING INFORMATION SL1461SA/KG/MPAS AGC BIAS RF INPUTS AGC OUTPUT 6 8 9 7 14 12 13 11 VIDEO FEEDBACK + VIDEO + VIDEO – VIDEO FEEDBACK – VIDE...