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384 Views
Registered: ‎10-29-2019

Power for TCXO External clock

Hi Xilinx,

I am using a CMOD S7 board to run four frequency counters. I was hoping to improve on accuracy by using a high end external clock instead of the CMOD S7 onboard 12 MHz clock. I have a Connor Winfield M100F. It requires 3.3V power. I cannot use the VCC from the PMOD connector as I have another device in there. Would it be possible to power it with one of the general I/O pins of the FPGA held HI at 3.3V. I am looking for a stable 3.3V supply and trying to avoid using a voltage regulator.

Kind regards

 

Pete

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2 Replies
klumsde
Moderator
Moderator
297 Views
Registered: ‎04-18-2011

I wouldn't encourage this, the IO is not intended for this. 

What sort of current consumption is needed by this TCXO?

Can it not share the VCC from the PMOD

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279 Views
Registered: ‎10-29-2019

Thanks for this, The VCC from the PMOD is being used by a PMOD micro SD. Will probably have to find a suitable voltage reg.

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