abonic
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Hi guys,
for noise calculation, we are quite familiar with MOSFET work in saturation region, the channel noise current is widely recoginized as \[\bar{I_{n}^2 }=4KT\gamma gm\]. What if it works in Linear region, or subthreshold region.
I just feel confusion that, why resistor\[r_{ds}\] should not be included in saturation region, while it must be taken into account in linear region .
for noise calculation, we are quite familiar with MOSFET work in saturation region, the channel noise current is widely recoginized as \[\bar{I_{n}^2 }=4KT\gamma gm\]. What if it works in Linear region, or subthreshold region.
I just feel confusion that, why resistor\[r_{ds}\] should not be included in saturation region, while it must be taken into account in linear region .