BlueSkyPrairie
Newbie level 4
From what I read, the absolute value of a CMOS bandgap using substrate PNP is affected mainly by mismatch in the PNP. op. amp. offsets, current mirror mismatch, resistor mismatch. If the circuit is well designed, large W, long L, wide R, and well layout. What is the absolute variation in the bandgap voltage that can reasonbly be obtained, within 0.5%, 1%, 3%, 5% of the nominal bandgap value ?