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SP8861
1·3GHz Low Power Single-Chip Frequency Synthesiser
Supersedes version in the1996 Professional Products IC Handbook, HB2480 - 3.0 DS3640 - 4.0 April 1998
The SP8861 is a low power single chip synthesiser intended for professional radio applications, containing all the elements (apart from the loop amplifier) required to build a PLL frequency synthesis loop The device is serially programmable by a three-wire data highway and contains three independent buffers to store one reference divider word and two local oscillator divider words. A digital phase detector with two charge pumps, programmable in phase and gain, are provided to improve lock-up performance.