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ON resistnace measuement!!

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rajblr

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hi every one,
Can any one tell me how to measure ON resistance of an Analog swicth for A/D analog input using Hspice. Infact i am designing a anlog switch, the client needs the ON resistnce values for different VDD( varying different VDD values). Also how to plot ON resistnace for varying VDD.

regards
raags
 

edwintsu

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Using RDSON = VDS/ID

Practical ON resistance need to add the Bondwire and PAD resistances(Typical 50mΩ).

Set the current of switch MOS, Use '.measure' to get the ON resistance curve at DC(Voltage) simulation.

B/R
Edwin
 

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