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Double exponential current source (Read 1040 times)

Annie New Member Offline Posts: 5	Double exponential current source Sep 29^th, 2012, 4:27am Is there any way to provide a double exponential current source in CADENCE IC5.1.4.1? I want to test the SEU tolerance by injecting current spike,no TCAD simulator available...any help?
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rfidea Senior Member Offline Posts: 159 Europe	Re: Double exponential current source Reply #1 - Sep 29^th, 2012, 4:59am Do you want to to something like i = exp(exp(Ktime)) ? I think there is a "exp()" block in the ahdlLib. If you create a voltage slope, v = Ktime with the vpulse from analogLib and then drive two series connected exp blocks from ahdlLib it will do the trick.
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Annie New Member Offline Posts: 5	Re: Double exponential current source Reply #2 - Sep 30^th, 2012, 2:17am Actually, I meant something like a spike with different rise and fall time like I(t)=A/(Tf-Tr){exp(-t/Tf)-exp(-t/Tr)}. Is it possible to do with Iexp in AnalogLib?
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boe Community Fellow Offline Posts: 615	Re: Double exponential current source Reply #3 - Oct 2^nd, 2012, 12:13am Annie, did you try it? - B O E
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