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rise time and fall time of input pulse for simulation

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itsnaushad

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Hi all! could you please tell me what should be the rise time and fall time of input pulse for measuring dynamic power of digital circuits. i have observed that power dissipation depends upon the rise time and fall time of input signal in hspice simulation.
 

ankitgarg0312

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it depends on rise time and fall time of your input source (real time signal gaenerator)
for simulation purpose we normally assume rise/fall time are 5-10% of clock pulse width.
 
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