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HMC703 circuit

Question asked by payam.mapar on Jun 1, 2016
Latest reply on Jun 2, 2016 by dyoung1

Hello,

 

I am using HMC703 in a design and I have two questions:

 

Q1: In the evaluation board schematics, there are several 1 ohm resistors on power supply pins between decoupling capacitors. Are these resistors really necessary? (I have already ferrite beads between HMC860 LDO and HMC703)

 

Q2: There are four 4.7uF capacitors around THS4031CD (loop filter Opamp) in parallel with 100nF capacitors. Isn't that too big? Isn't it better to put 10pF parallel with 100nF?

 

BR,

Payam

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