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How to choose a Power regulator for HMC980

Question asked by Just_42 on Jun 13, 2018
Latest reply on Jun 15, 2018 by David_Wong

I want to use the HMC980 to bias the HMC950.  From the datasheet of HMC980:

VDD = 7.7V

IDRAIN = 820mA

RSENSE = 183Ohm


The question is

1. R3, R4 are open, is that means they are “no connect” ?

2. How to change VNEG = -2.0V ?

3. How much current will the VDD pin need?

4. What will happen if VDD > 7.7V ?

5. How to find a suitable solution to ensure VDD = 7.7V? Can I use Switching Regulators to connect VDD?