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HMC835 eval board loop filter R58

Question asked by ma.savoyat on Feb 26, 2015
Latest reply on Feb 27, 2015 by dyoung1

Hi,

 

On the HMC835 evaluation board (https://www.hittite.com/content/documents/eval_pcb_schematic/hmc835lp6ge_eval_pcb_schematic.pdf) the loop filter contains a resistor  R58=510R between last RC filter stage and Vtune input.

The resistor does not appear in the datasheet.

Can you explain the role of this resistor?

 

Regards,

 

MAS

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