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Re: Need startup circuit for self-bias voltage/current refer
The power saving tech. that start-up circuit that works to let the main circuit run then after that it consumes no power and in layout it takes small area and u r sure that ur circuit will work well.
i will try upload paper for this...
Re: Matching
I can't understand what N
But about matching in mos transistorsas u increase the no of fingures for the mos transistor u got good matching
Re: bandgap layout
Try to minimize the no of BJT transistors used and increase the no of fingures of MOS transistors
for resistor try to set it ratioed to each other
Hi
Dear All;
I wanna ask how to simulate the process variation for ref current using cadence and i have no licence for monte carlo
in changeing the models of the transistors, res, BJT, ... in the model library, change it to what??
thanks
Hi
when u focus on the ct u will find that there is 2 loops one for +ve FB and the other for -ve, So as there is +ve FB we have 2 make sure that this +ve FB will not make the ct oscillate so we need the -ve FB 2 more more that +ve FB by any factor
and i think that Razavi say by factor 2 for...
ptat2 current source
Yes
u can check the book of G. Rincon moora named voltage reference from diodes to high order bandgap circuits
it's very good about reference cts
I think u r right in what u mentioned
In AC analysis any Current source ==> Open Ct
Voltage Source ==> Short ct
so the AC signal can flow through the voltage source.
I think the AMmp as start is very good, it will give u very good backgroung about most fundamentals of analog cts, and u will find it good
for references try to check Ravazi, Meyer and Johns&martin these are the Best -I think
good luck
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