The data sheet for the AD8031 only has capacitive drive plots to 1nF.
In Circuit note CN-0277, the AD8031 is being used because it can drive large capacitive loads.
In the circuit there are two 0.1uF (100nF) capacitors connected to its output with no isolation resistor.
Can the AD8031 drive this kind of load without stability problems?
OK, I found this post which provides an answer:
ez.analog.com/.../84581
Hi Chillis,
I already contacted the product owner of this part, I'll get back to you once i have the data.
Thanks,
Roel
Hi,
I have the same question, and there was no answer given.
This article "Voltage Reference Design for Precision Successive-Approximation ADCs" also states that the AD8031 is stable with >10uF loads.
www.analog.com/.../precision-successive-approximation-adcs.html
Is that true?
Any background information for these statements would be a big help.
Thanks, Ken