Posted by ets
on November 6, 2008, 10:19 am
I'm new to analog design and have seen biasing using a long string of fets with gates tied together. The top fet is diode connected. What is the advantage of this over using a long fet? The only thing I can come up with is that the long string allows each transistor to remain within the model boundaries whereas a long fet may be outside of the Lmax for the models. Is there something else I am missing here?