Comparitor minimum pulse width on a K65

[therealfreegeek]

I am thinking about using the K64 to count pulses from a muon detector, the pulse will be 5 to 10nS wide, I will use the on chip comparator to feed the timers. Will I need to stretch the pulses to trigger the timer count and input capture inputs?

[kerryzhou · Accepted solution]

Hi therealfreegeek,

    Please see the datasheet find the comparator minimum pulse width.

  So, you must keep the pulse typically in 50 ns,  5ns-10ns is really very small, internal comparator can't realize it, please choose the external comparator.

Wish it helps you!

If you still have question, please contact me!

Have a great day,

Jingjing

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[therealfreegeek]

Thanks, I will use an external fast comparator / monostable like the LM1711.