Hi all,
In a classical miller OpAmp circuit;
we want to get more gain so we want to use both gm and gmb. To do that both body and gate terminals of each input nmos diff pair is connected together.  The benefit might be; - having higher gain - having low Vt
Is there any problem of using nmos in such configuration? i.e.; is latch-up an issue here? (input level may vary from 500mV to 900mV )
(Both devices are tripple nwell RF transistor and the design is done under 1 V supply... to be more specific it's a .18 um process)

thanks
eng