NTE989

NTE989 Integrated Circuit General Purpose Phase Lock Loop (PLL) 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: D 200ppm/°C frequency stability of the VCO D Power supply range of ±5 to ±12 volts with 100ppm/% typical D 0.2% linearity of demodulated output D Linear triangle wave with in phase zero crossings available D TTL and DTL compatible phase detector input and square wave output D Adjustable hold in range from ±1% to > ±60% Applications: D Data and tape synchronization D Modems D FSK demodulation D FM demodulation D Frequency synthesizer D Tone decoding D D D D D Frequency multiplication and division SCA demodulators Telemetry receivers Signal regeneration Coherent demodulators Absolute Maximum Ratings: Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...