[GPS_Standard] Odd voltage VFC for OCXO

Mark G0MGX mark.g0mgx at gmail.com
Mon Nov 11 11:55:26 EST 2013


Hi

I'm starting my build today and I wanted to ask about the VCXO tuning 
range. My VCXO has a 0V to 2.54V variable control voltage and as the U5 
op-amp has a minimum voltage rail requirement of 4V clearly I can't use 
an external 2.54V supply.

I was planning to simply add a 50-50 potential divider to the output and 
configure the board as a 0 to 5V adjustment.

Does anyone have any suggestions?

Thanks,

Mark.
G0MGX


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