Measurement of time delay

[bunti]

Can someone tell me how to measure the propagation delay of a circuit?

 

[venkateshem]

**broken link removed**

 

[jpanhalt]

Found **broken link removed** after a quick search on propagation delay measurement. Hope it helps.

John

 

[bunti]

I want to measure it using cadence and is it a compulsion that we need to use only a square wave to measur it?

 

[Deepon]

I want to measure it using cadence and is it a compulsion that we need to use only a square wave to measur it?

You can measure the delay of any knid of wave in cadence by using the calculator...
If you don't know how to use it, definitely I will help you out...

 

[covcst]

Hi bunti,
yes u are correct. You need to apply a square wave in cadence spectre with some nonzero rise time and fall time (rise time ~ 1/100 th of the time period: e.g. if you apply time period of 1ns, set rise time and fall time of 1 or 10 ps) and plot both the output and this square wave in the same plotting window. Then measure 50% - 50% of the signals------- this will be your propagation delay of the ckt....