SP8855E Datasheet (Zarlink Semiconductor) - 2.8GHz PARALLEL LOAD PROFESSIONAL SYNTHESISER

SP8855E, 2.8GHz PARALLEL LOAD PROFESSIONAL SYNTHESISER

Input bus bit 10 Input bus bit 9 Input bus bit 8 Input bus bit 7 Input bus bit 6 Input bus bit 5 Input bus bit 4 Input bus bit 3 Input bus bit 2 Input bus bit 1 Input bus bit 0 0V (prescaler) RF input RF input VCC + 5V (prescaler) VEE 0V Lock detect output C-lock detect Rset Charge pump output Charg

SP8855E 2.8GHz Parallel Load Professional Synthesiser Advance Information DS4239 ISSUE 3.0 PIN 1 March 1999 The SP8855E 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 devices in the series are the SP8852E which is a fully programmable device requiring two 16 bit words to set the RF and reference counters, and the SP8854E which has hard wired reference counter programming and requires a single bi

SP8855E Features

* 2.8GHz Operating Frequency (IG GRADE) Single 5V Supply Operation High Comparison Frequency 50MHz High Gain Phase Detector 1mA/rad Programmable Phase Detector Gain Zero "Dead Band" Phase Detector Wide