TY - GEN
T1 - Programmable Gain and Bandwidth Op-Amp Using Controllable Input Stage Tail Current
AU - Zaidi, Muhaned
AU - Grout, Ian
AU - Khari A'Ain, Abu
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - This paper presents a novel technique to design a programmable open-loop DC gain and bandwidth single-ended output CMOS (complementary metal oxide semiconductor) opamp (operational amplifier) using a serial digital interface. The circuit topology allows for the programming of the differential input stage tail current. With this variable tail current, a controllable open-loop DC gain and frequency response is created that can be controlled from a host digital processor. The op-amp circuit has a rail-to-rail output where the first stage of the op-amp consists of differential input and folded-cascode circuits that are compensated using a negative Miller capacitor, and the second stage is a class-AB amplifier compensated by a conventional Miller capacitor. The op-amp has been designed using a 0.35\ \mu \mathrm{m} CMOS technology, its operation simulated using the Cadence Spectre simulator and operates on a single-rail +3.3V power supply.
AB - This paper presents a novel technique to design a programmable open-loop DC gain and bandwidth single-ended output CMOS (complementary metal oxide semiconductor) opamp (operational amplifier) using a serial digital interface. The circuit topology allows for the programming of the differential input stage tail current. With this variable tail current, a controllable open-loop DC gain and frequency response is created that can be controlled from a host digital processor. The op-amp circuit has a rail-to-rail output where the first stage of the op-amp consists of differential input and folded-cascode circuits that are compensated using a negative Miller capacitor, and the second stage is a class-AB amplifier compensated by a conventional Miller capacitor. The op-amp has been designed using a 0.35\ \mu \mathrm{m} CMOS technology, its operation simulated using the Cadence Spectre simulator and operates on a single-rail +3.3V power supply.
KW - negative Miller compensation
KW - programmable bandwidth
KW - programmable gain
KW - tail current
UR - http://www.scopus.com/inward/record.url?scp=85059769940&partnerID=8YFLogxK
U2 - 10.1109/IEECON.2018.8712233
DO - 10.1109/IEECON.2018.8712233
M3 - Conference contribution
AN - SCOPUS:85059769940
T3 - iEECON 2018 - 6th International Electrical Engineering Congress
BT - iEECON 2018 - 6th International Electrical Engineering Congress
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th International Electrical Engineering Congress, iEECON 2018
Y2 - 7 March 2018 through 9 March 2018
ER -