Description:

The NTE989 is a general purpose Phase Locked Loop (PLL) in a 14–Lead DIP type package 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 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.

Features:

● 200ppm/°C frequency stability of the VCO

● Power supply range of ±5 to ±12 volts with 100ppm/ 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

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