The SP8854D is one of a family of parallel load synthesisers containing all the elements apart from the loop amplifier to fabricate a PLL synthesis loop. Other parts in the series are the SP8852D which is fully programmable requiring two 16 word bit words to set the RF and reference counters, and the SP8855D which is programmed by hard wired links or switches.

FEATURES
■ 1.7GHz Operating Frequency
■ Single 5V Supply Operation
■ Low Power Consumption <1.3W
■ High Comparison Frequency 20MHz
■ High Gain Phase Detector 1mA/rad
■ Zero ‘‘Dead Band” Phase Detector
■ Wide Range of RF and Reference Divide Ratios
■ Programming by Single Word Data Transfer