Iout, Iin's relationship of wilson current

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rainman.cn

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hi,
the wilson current mirror is shown in the attachement, how to calculate the relationship of Iout and Iin?
let's ignore the body effect. Only consider the channel-length modulation.

thanks,
 

nomally, the (w/l)m3 : (w/L)m4=(w/l)m1 : (w/l)m2,
then the Iin/Ioutp = (w/l)m3w/l)m4
 

thanks very much for reply,
this is the results we ignore lamda, right?
what I want to find is,
when(w/l)m1 = (w/l)m2, what's the size of (w/l)m3 &(w/L)m4 is to make Iout=Iin independent with lamda
 

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