Hi Fom,
Thanks a lot.
Are you using all devices in saturation or a certain of them in weak inversion also.
Is your reference for 1.2v or sub1volt
Is the design based on voltage summation or current summation.
And what is the total current consumed by the BGR.
For my design we have a supply of 1.5V, we were thinking of using an opamp in the BGR core. But then any extra device would come only at cost of extra power.
If it is ok with you could you give some suggestions on topology etc., it would be great help