A few years ago, I was working on the design of a data acquisition system (DAS) that would eventually need to be tested when manufactured. It had both high-side current sensing and floating diff-amp ...

Some of the commentary in response to Part 1 on this topic suggested that the two 1 pF capacitors, C4 and C5, had to be put in series for lack of availability of 0.5 pF parts. A simulation of that ...