LMC568

Low Power Phase-Locked Loop

General Description

The LMC568 is an amplitude-linear phase-locked loop con-

sisting of a linear VCO, fully balanced phase detectors, and

for high performance with low power consumption.

modulation of FM and FSK signals. Carrier detect is indi-

cated when the PLL is locked to an input signal greater than

26 mVrms. LMC568 applications include FM SCA and TV

second audio program decoders, FSK data demodulators,

and voice pagers.

Features

n Carrier Detect Output with hysteresis

n Operation to 500 kHz input frequency

n 2V to 9V supply voltage range

n Low supply current drain

DS009135-1

Order Number LMC568CM or LMC568CN

See NS Package Number M08A or N08E

May 1999

© 1999 National Semiconductor Corporation

DS009135

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