Si5351A frequency tool

Online tool to calculate the Feedback Multisynth Divider, Output Multisynth Divider (OMD) and R registers for the Si5351A. Please note that instead of naming the variables in the OMD a + b/c they are named d + e/f instead to minimize ambiguity. Furthermore, is the OMD operated in integer mode thus e = 0 and f = 1 are static.

Wanted frequency : MHz kHz Hz mHz (from 2605 Hz and up to 300 MHz)
Crystal frequency : MHz kHz Hz mHz (nominal 25 MHz or 27 MHz)


For more information about the math behind the tool please see the Si5351A main page.