The NJ88C33 is a synthesiser circuit fabricated on Zarlink Semiconductors 1.4 micron CMOS process, assuring very high performance. It is I2C compatible and can also be programmed at up to 5MHz. It contains a 16-bit R counter, a 12-bit N counter and a 7-bit A counter.
A digital phase comparator gives improved loop stability with current source outputs to reduce loop components. A voltage doubler is provided for the loop driver to improve control voltage range to the VCO when operating at low supply voltages.

FEATURES
■ Easy to Use
■ Low Power Consumption (15mW)
■ Single Supply 2.5V to 5.5V
■ Digital Phase Comparator with Current Source Outputs
■ Serial (I2C Compatible) Programming, 5MHz max
■ Channel Loading in 8µs
■ 150MHz Input Frequency Without Prescaler at 4.5V (52MHz at 2.7V)
■ Standby Modes
■ Use of Two-Modulus Prescaler is Possible

APPLICATIONS
■ Cordless Telephones (CT2, DECT)
■ Cellular Telephones (GSM, PCN, ETACS)
■ Hand Held Marine Radios
■ Sonarbuoys
■ Video Clock generators