Super-Gain-Boosted AB-AB Fully Differential Miller Op-Amp With 156dB Open-Loop Gain and 174MV/V MHZ pF/µW Figure of Merit in 130nm CMOS Technology

2022-09-062022-09-062021-04-12Paul, A., Ramírez Angulo, J., Díaz Sánchez, A., López Martín, A.J., González Carvajal, R. y X. Li, F. (2021). Super-Gain-Boosted AB-AB Fully Differential Miller Op-Amp With 156dB Open-Loop Gain and 174MV/V MHZ pF/µW Figure of Merit in 130nm CMOS Technology. IEEE Access, 9, 57603-57617.2169-3536https://hdl.handle.net/11441/136802Article number 9400400A fully differential Miller op-amp with a composite input stage using resistive local common-mode feedback and regulated cascode transistors is presented here. High gain pseudo-differential auxiliary amplifiers are used to implement the regulated cascode transistors in order to boost the output impedance of the composite input stage and the open-loop gain of the op-amp. Both input and output stages operate in class AB mode. The proposed op-amp has been simulated in a 130nm commercial CMOS process technology. It operates from a 1.2V supply and has a close to rail-to-rail differential output swing. It has 156dB DC open-loop gain and 63MHz gain-bandwidth product with a 30pF capacitive load. The op-amp has a DC open-loop gain figure of merit FOMAOLDC of 174 (MV/V) MHz pF/µW and large-signal figure of merit FOMLS of 3(V/µs) pF/µW.application/pdf15 p.engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Class-AB op-ampFully differential amplifierMiller-compensationRegulated cascodeResistive local common-mode feedbackVoltage followerSuper-Gain-Boosted AB-AB Fully Differential Miller Op-Amp With 156dB Open-Loop Gain and 174MV/V MHZ pF/µW Figure of Merit in 130nm CMOS Technologyinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess10.1109/ACCESS.2021.3072595