ADF4110 Channel Spacing


I am using the ADF4110's N Counter with the Dual Modulus Prescalar as a Programmable Divider. The input frequency from the VCO varies from 1MHz to 32MHz (square). I should produce a 500Hz output from the ADF4110 at phase locked condition at all frequencies.

1. The input square wave has an amplitude of 2V. I need to square up the input as sharp as possible to achieve the slew rate required by the ADF4110's input. Please suggest a good comparator that would do the same...?

2. The Channel spacing of my system is 1KHz. Could I achieve this through the ADF4110 at all input frequencies...?



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