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AD5293 capacitances

Question asked by EVC on Jul 13, 2017
Latest reply on Sep 11, 2017 by EVC

From the data sheet:

Note 4 warns these are design figures.

 

I am using the 20k version in a network that has some capacitors connected to the digipot, to calibrate the phase of the circuit. The problem is the capacitances of the network the digipot is connected to are on the same order of magnitude as the digipot's.

 

So here are my questions:

1- What are the tolerances of such capacitances?

2- Do they vary with wiper position? If so, how much?

3- How do they vary with temperature?

 

Thank you in advance.

 

Elder.

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