what's range for vdd?CMR? power consumption?
output range?
you must have thease spec and then choose
suitable opamp topology,do some op research,
may be you will find answer in general textbooks!
1.6v vdd+0.5v cmr --> i suggest the two stage ota is appropriate one ,
if you also need high gain , choose folded cascode as first stage,
and hybrid cascode compensation
but, quiscient curret consumes 1mA should not be achived easily,
i have designed a fully diff. ota with 2pF,15ns settling ota before (first stage is folded cascode),
it consume more than 2mA
Ok I'm seeing a problem with the CMR requirement... I think I need a N+P input pair... I don't need much gain.. Is there a way to do the N+P input pair w/o having to cascode the 2nd stage?
vt is also killing me on the process...it's about 0.65v...ridiculous...