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The circuit is same as a constant-gm biasing circuit used to generate bias currents. The current in nmos (those with gates to vbiasn) is (delta_vgs / R) and you can use vbias to generate bias currents in other circuits
The circuit is same as a constant-gm biasing circuit used to generate bias currents. The current in nmos (those with gates to vbiasn) is (delta_vgs / R) and you can use vbias to generate bias currents in other circuits
By gm i mean the transconductance of the mos. For constant-gm biasing you can refer any of the books on analog ckt design (razavi or grey, meyer) or some of the threads in eda have the references.
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