LMC568
www.ti.com SNAS559B – MAY 1999 – REVISED APRIL 2013 LMC568 Low Power Phase-Locked Loop
Check for Samples: LMC568 FEATURES 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. 1 2 Demodulates В±15% Deviation FM/FSK Signals
Carrier Detect Output with Hysteresis
Operation to 500 kHz Input Frequency
Low THD—0.5% Typ. for ±10% Deviation
2V to 9V Supply Voltage Range
Low Supply Current Drain The VCO has a linearized control range of В±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 mVrms. LMC568 applications
include FM SCA and TV second audio program
decoders, FSK data demodulators, and voice pagers. Typical Application
(100 kHz input frequency, refer to Notes to Typical Application) Figure 1. 8-Pin SOIC or PDIP
See D or P Package 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
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