small signal Bulk source voltage

[jason]

Hello Everyone

I would like to check with you all if SMALL SIGNAL Vbs for pmos is
always zero is the bulk and source is at Vdd?
Kindly enlighten
Thank you all

best regards
Jason

 

[Joseph2k]

Hello Everyone

I would like to check with you all if SMALL SIGNAL Vbs for pmos is
always zero is the bulk and source is at Vdd?
Kindly enlighten
Thank you all

best regards
Jason

No. they are generally designed to be enhancement mode devices.