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ad5292 configuration

Category: Hardware
Product Number: AD5292

Hi Engineers,

I have some questions about configuration and operation of the AD5292.  I am looking at using the AD5292 as a VCO tuner for the HMC733LC4B.  I would like to control the voltage out of the AD5292 between 21V and 0V.  I won't need to daisy chain multiple 5292s nor will I need to use the 20-TP memory register (I think) as just wish to be able to set the RDAC Register after power-up and change the output voltage in a human speed way like a couple times per hour.  I would like to know what you all think of the design below.  Will it work?  If not why and how can I adjust it so it might work? 

Thanks for the help.