Analog2015
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How to get dimension of mosfets in start up circuit? Also, I use equation
I_REF=2*(1-1/√K)^2/(R^2 KP_n W_1/L_1 )
for getting value of resistor R=717 ohm. Iref=200uA, K=4, W/L=10/0.35, KP_n=170*10e-6.
For that equation i got very bad caracteristic of current. The value of current is bigger. Maybe for short channel designe i must use some other equation??? Sheme and caracteristic are attached
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