LMC568 Datasheet | National Semiconductor

Description The LMC568 is an amplitude-linear phase-locked loop consisting of a linear VCO, fully balanced phase detectors, and a carrier detect output. LMCMOS™ technology is employed for high performance with low power consumption. The VCO has a linearized control range of ± 30% to allow demodulation of FM and FSK signals. Carrier detect is indicated when the PLL is locked to an input signal greater than 26 m Vrms. LMC568 applications include FM SCA and TV second audio program decoders, FSK data demodulators, and voice pagers. Features n n n n n n Demodulates ± 15% deviation FM/FSK signals Carrier Detect Output with hysteresis Operation to 500 k Hz input frequency Low THD - 0.5% typ. for ± 10% deviation 2V to 9V supply voltage range Low supply current drain Typical Application (100 k Hz input frequency, refer to notes pg. 3) DS009135-1 Order Number LMC568CM or LMC568CN See NS Package Number M08A or N08E LMCMOS™ is a trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS009135 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage, Pin 3 Supply Voltage, Pin 4 Output Voltage, Pin 8 Voltage at All Other Pins Output Current, Pin 8 Package Dissipation Operating Temperature Range (TA) Storage Temperature Range 2 Vp- p 10V 13V Vs to Gnd 30 m A 500 m W - 25˚C to +125˚C - 55˚C to +150˚C Soldering Information Dual-In-Line Package Soldering (10 seconds) 260˚C Small Outline Package Vapor Phase (60 seconds) 215˚C Infrared (15 seconds) 220˚C See AN-450 “Surface Mounting Methods and their Effect on Product Reliability” for other methods of soldering surface mount devices. Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific...