Author Topic: three way buffer replication of a special kind on pulse  (Read 184 times)

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Offline john23Topic starter

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three way buffer replication of a special kind on pulse
« on: July 17, 2024, 12:27:05 pm »
There is a pulse shown in the picture.The pulse voltage are -2V to -5V and the width is 200ns.
Is there a component which could take this pulse and relpicate it three times?
Three outputs which are equal to the pulse i entered.
Thanks.

 

Online PCB.Wiz

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Re: three way buffer replication of a special kind on pulse
« Reply #1 on: July 17, 2024, 07:58:42 pm »
You did not mention the load this drives, nor the spacing between pulses ?

You have a 3V swing, so any MCU or logic put between -2V and -5V rails will give that.
Most CMOS Logic / MCUs will be slightly faster rise times than your display.

CMOS logic would need a sprinkling of parts - something like a HC4017 gives you some pulse choices.

Or, almost any small MCU could do that, either use PWM + SW, or just SW alone bit-bang.
A 50MHz Sysclk will have 20ns granularity in timing.
 

Offline David Hess

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Re: three way buffer replication of a special kind on pulse
« Reply #2 on: July 17, 2024, 08:35:06 pm »
A current feedback operational amplifier, or fast voltage feedback operational amplifier, can replicated it exactly, including the leading and trailing edges.

A differential pair of transistors, with resistors and diodes, could duplicate it.
 


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