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Sunday, August 05, 2007

Phase Locked Loop IC

LM565/LM565C Phase Locked Loop
General Description

The LM565 and LM565C are general purpose phase locked
loops containing a stable, highly linear voltage controlled oscillator
for low distortion FM demodulation, and a double balanced
phase detector with good carrier suppression. The
VCO frequency is set with an external resistor and capacitor,
and a tuning range of 10:1 can be obtained with the same
capacitor. The characteristics of the closed loop
system—bandwidth, response speed, capture and pull in
range—may be adjusted over a wide range with an external
resistor and capacitor. The loop may be broken between the
VCO and the phase detector for insertion of a digital frequency
divider to obtain frequency multiplication.

The LM565H is specified for operation over the −55°C to
+125°C military temperature range. The LM565CN is specified
for operation over the 0°C to +70°C temperature range.

LM565/LM565C Datasheet pdf