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impedence matching of two equipments

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shahbaz.ele

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dear all
I have a device for measuring time in pico seconds which has an input impedence of 50ohm.
but my circuit (op amps) has high impedence, how can i match both impedencs.
is there any idea to make my circuit output 50ohm.
 

A typical op amp can only drive about 5 mA so the maximum output into 50 ohms will be only 250mV peak.
 

or you can use a voltage follower opamp circuit to nullify the o/p impedence of your opamp circuit
 

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