AD9951 - RefCLK using external Oscillator instead of Crystal

Document created by analog-archivist Employee on Feb 23, 2016
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Couldy you please provide me the right coupling and voltage level if I want to
use an Oscillator instad of a crystal for the REFCLK?

 

if the XTAL mode is not used, you should ac couple both REF CLK inputs. The
capacitor values of 0.1uf or 0.01uf should suffice. In a single-ended
configuration, tie the unused REF CLK ac capacitor to ground or AVDD for
bypassing. A voltage swing of 200mVp-p to 1Vp-p should suffice.

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