| Jinhong Wang wrote: |
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Hi Stefan,
A quick question, what is the typical variation of the sampling capacitors in DRS4? Will this variation be significant to affect your sampling result?
Best,
Jinhong
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The capacitors sample the input voltage, not the charge, so the actual size of the capacitors does not matter on first order (the variations might be in the order of 5%). A bigger effect is the variation of the analog switches in the front of the capacitors, which is about 15%. So the actual bandwidth each cell sees varies by maybe 20% (given by the R and the C), but this comes only into play when sampling steep edges.
Stefan |