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HMC3716 loop filter question

Question asked by anhchu on Sep 6, 2016
Latest reply on Jan 23, 2017 by johnpritchard

Hi everyone, I have some questions about the loop filter as shown in the page 9 of the HMC3716  datasheet:

- What is the level of NU and ND at locked state? 3V or 5V?

- Since NU and ND can swing between 3 and 5V, so the Vtune would have the same swing?

- My VCO needs Vtune between 2 and 3.5V. How can I realize the loop filter with minimum opamp?

 

Thank you,

Anh

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