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OPA858: peak detector

NISHANTH AB
Prodigy 85 points
Part Number: OPA858
Other Parts Discussed in Thread: OPA548, OPA860

Hi all,

I am trying to build a peak detector circuit for an application and i needed the following specs.

1. the rise time of the signal is 1ns and its max voltage of the peak is 500mV with discharge time to be 300-500ns.

2. an input capacitance of less than 1pF at its input.

i have attached the profile of the waveform with this thread and the circuit i am planning to use. please do tell me if this is not possible as i will try and look at other options. (one obvious option that i am evaluating is opa548.)