|
Features
200 ppm/°C frequency stability of the VCO
Power supply range of ±5 to ±12 volts with 100 ppm/% typical
0.2% linearity of demodulated output
Linear triangle wave with in phase zero crossings available
TTL and DTL compatible phase detector input and square wave output
Adjustable hold in range from ±1% to > ±60%
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.
Applications
Data and tape synchronization
Modems
FSK demodulation
FM demodulation
Frequency synthesizer
Tone decoding
Frequency multiplication and division
SCA demodulators
Telemetry receivers
Signal regeneration
Coherent demodulators
|
|
