The S/H clock will go down to DC, so just use a control reg.
Not sure how you want to use it but suggest keep it sampling
until you want to go to hold, ie. use T/H mode. And keep in mind
the droop rate if you need to hold extended time.
PSOC Sample Hold.jpg 11.4 K
You can always use a A/D to effect a S/H, no droop issues. Especially effective
in applications that need very long hold times, no special low leakage caps
needed (for S/H).
You can also effect a long term S/H with analog mux and an OpAmp on in and out
of mux, and a cap of your choosing.
Thanks, It seems to work fine.
Do you know what is the droop rate that I should be expecting?
I looked at component datasheet, droop rate spec shown w/o an entry.
You could always set up DelSig and measure it, or file a CASE and ask
for the spec.
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