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 bit word to program the RF divider. The SP8855E replaces the existing SP8855D.
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 range of RF and Reference Divide Ratios
• Programming by Hard Wired Inputs
• Low cost plastic package option
• GPS HI-REL level a screened option