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HMC3716 loop filter recommendation

Question asked by johnpritchard on Jan 23, 2017
Latest reply on Jan 30, 2017 by johnpritchard

Dear Sir

Please could you recommend an op amp and loop filter for an HMC3716 with a VCO operating near the maximum frequency of 1.3GHz, tuned for best integrated phase noise? Phase noise of the VCO is approximately:

-10dBc/Hz@100Hz

-45dBc/Hz@1kHz

-70dBc/Hz@10kHz

-90dBc/Hz@100kHz

-110dBc/Hz@1MHz

-130dBc/Hz@10MHz

-150dBc/Hz@100MHz

The reference is very good so I think it is possible to ignore the phase noise contribution from the reference. The integration frequency range of interest is 40Hz to 40MHz.

 

Have you ever made a PLL with the HMC3716 operating at 1.3GHz?

 

Many thanks

John P

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