help in , sample and hold

Thread Starter


Joined Nov 12, 2008
I did the experiment of sample and hold after that I lost how to write the Conclusion
so if you explain it.Plz​


Joined Apr 20, 2004
Possibly, you might find pages 4, 5, & 6 of the PDF on the AD585 interesting, as they bear directly on you query.

Follow the link, get the PDF, read the PDF. You will learn everything you need to know.


Joined Feb 24, 2006
You have a capacitor and a switch.
When you close the switch the capacitor "samples" the input voltage.
When you open the switch, the charge has no place to go and so the capacitor "holds" this voltage.
Then the A/D converter may read this voltage at its own pace.

The key features are how well does the capacitor follow the input, it is a low pass filter after all, and how fast does the voltage leak off after the switch is opened.

Don't understand how you could do the experiment and lose the conclusion. I have confidence that according to the inscription on the silver chest:

"Who chooseth me shall get as much as he deserves,"