jeremy_zhu
Member level 2
hello,everybody!i designed a r2r amplifier for low supply voltage(<1V),my question is how to improve my PSRR (only 36dB),other characteristics is just ok. the attachment shows my output stage of the amplifier;M22,M23's L=1.5um in 0.25um process. structure problem or we can change some parameters of these transistors to achieve a little bit higher PSRR? big L of the output transistors? it seems not work.
https://obrazki.elektroda.pl/32_1179936038.gif
https://obrazki.elektroda.pl/32_1179936038.gif