High speed peak detector

[payam.hs]

I have a some narrow pulse (about 1V , 200ns) I want to detect and hold maximum of this pulses. There was a circuit on ART of Electronics as a peak detector but it base on the speed of opa and diode recovery time that can not help me about this kind of signals.
Do u have any idia?

 

[IanP]

Maybe opamp-based peak detector in open loop configuration is the solution .. see picture below ..
More details at:
https://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1022,P1326,D4251

Regards,
IanP

 

[flatulent]

The usual method is to use two detectors in tandem. The first has a small hold capacitor that can be quickly charged, but will not hold for very long. This will "stretch" the pulse out long enough that the second peak detector with a large capacitor can come up to the peak voltage and hold it for a longer time.

 

[qqic]

what your working speed?