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Hello Guys,
Our customer is looking to to measure the peak value of an optical-pulse signal (converted to an electrical signal via the DET10A2 photodiode, ThorLabs). The pulse has a rise time (0% --> 100%) of approximately 3ns.
They have been looking at the OPA615 chip for ns - scale peak detection, and is wondering if the circuit configuration below specified in the datasheet would have a large enough bandwidth for peak detection of the pulse in question (i.e. would the circuit be fast enough for detection of a pulse of this duration). They would also want that the peak detector is able to hold the peak-value long enough to be sampled (by an external acquisition system) before being reset.
If this circuit is unlikely to work for our application, I'm wondering if TI has any other potential solutions?
Thanks in advance!
Art
Hello Art,
This older thread discusses as similar use case:
e2e.ti.com/.../OPA615PeakDetector-_2800_1_2900_.TSC:1230:0]
Best,
Hasan Babiker
Hi Art,
peak detection of 3ns wide pulses is a true challenge. I would probably do it this way:
Kai
