Re: Low Voltage Rail to Rail op,who could give me some advic
As I know, constant gm biasing ciucuits is used for rail to rail input swing to reduce the variation on the gm of input stage, which makes unity gain frequency more stable. By the way, what do rail to rail mean ? Rail to rail in the input or output stage. If you need a rail to rail input, pmos and nmos input pairs are needed. Try to find a professor named Huijsing and he has many publications on opamp.