Capacitive Sensor Log

Aug 26, 2016

From end of 2015:

I am using an arduino for communication and using its power supply to power the thing, the power supply goes through a low noise Vref regulator before it his the AD. Have some basic filtering caps and am wondering if the ferrite beads will help and also what the function of the zener diode is in his circuit. Also have some questions about the PCB layout and what aspects were intentional and what were functions of routing. IE the ground pin does not directly connect to the ground plane under the AD.

On Thu, Nov 19, 2015 at 6:55 PM, nikita alexandrov <nalexandrov251@gmail.com> wrote: You can feel free to just forward my email to him. I did see the email exchange, thanks.

My application is using the AD774*5* actually as a chemical detector. Right now my last 2-3 bits are noise due to the power supply being noisey. My best noise floor has been .01fF. Looking for tips for psu filtering and circuit board layout.

What kind of noise floor are you getting? Thanks, Nikita

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