taeyui
Newbie level 2
Hi guys,
I tried to simulate the offset of fully differential opamp but the result looks something wrong.
When I simulated Monte Carlo for "Mismatch only", that result is reasonable standard variation value, about 8mV,
but in case of "Process only", that result about zero.(~ 70e-23)
I guess there are something I missed.
here are simulation environment
I induce VDD=2.7 and VCM=1.35, simulated difference btw INN and INP.
Is there something wrong for unity gain feedback? or simulation schematic?
(actually I also simulated in same way with ideal Diffamp which has a offset(setting parameter 5mV) but it has 5mV offset
One more question,
I appreciate if you explain easily what's difference between systematic offset and random offset.
I tried to simulate the offset of fully differential opamp but the result looks something wrong.
When I simulated Monte Carlo for "Mismatch only", that result is reasonable standard variation value, about 8mV,
but in case of "Process only", that result about zero.(~ 70e-23)
I guess there are something I missed.
here are simulation environment
I induce VDD=2.7 and VCM=1.35, simulated difference btw INN and INP.
Is there something wrong for unity gain feedback? or simulation schematic?
(actually I also simulated in same way with ideal Diffamp which has a offset(setting parameter 5mV) but it has 5mV offset
One more question,
I appreciate if you explain easily what's difference between systematic offset and random offset.