Sink and Source cascoded current mirrors

102

00:32:50

Used to sink or source current. 
Amplification factor is given by the n-times width of output MOS compared to input MOS.

Exeample :
Input width = 20nm
Output width = 40nm
Iref : 100uA

Iout = (40/20) * 100 = 200uA

You can even use the grid voltage of a branch to drive other branches with different width.

There is a 2-stage MOS in this topology to compensate for transition voltage (Vt) and be as accurate as possible.

published 4 years ago

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