SP8861 - Low Power Single-Chip Frequency Synthesiser

Zarlink Semiconductor

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Datasheet Details

Part number	SP8861
Manufacturer	Zarlink Semiconductor
File Size	308.01 KB
Description	Low Power Single-Chip Frequency Synthesiser
Datasheet	SP8861_ZarlinkSemiconductor.pdf

SP8861 Product details

Description

Prescaler and AM Counter The programmable divider chain is of AM counter design and therefore contains a dual modulus front end prescaler, an A counter which controls the dual modulus ratio and an M counter which controls the bulk multi-modulus division.A programmable divider of this type has a division ratio of MN1A and a minimum integer steppable division ratio of N(N21).In the SP8861, the dual modulus front end prescaler is a dual N ratio device, capable of being statically switched between

Features

s Improved Digital Phase Detector Eliminates HP28 ‘Dead Band’ Effects s Low Operating Power, Typically 175mW.
FPD and FREF outputs are reversed by the phase detector sense bit in the F1/F2 programming word. The s 1.
3GHz Operating Frequency above diagram is correct when the sense bit is low. See s Complete Phase Locked Loop Table 2 and Fig. 7. s High Input Sensitivity VCC1, VEE1.
preamplifier and prescaler supplies s Programmed throughThree-Wire Bus www. DataSheet4U. com VCC2, VEE2.

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Published: Apr 17, 2007 |