Design and analysis of a two-stage OTA for sensor interface circuit

Design and Analysis of High Gain Low Power CMOS Comparator

“…However, reduction of power supply voltage and intrinsic gain of transistor often traded for gain and output swing in single-stage amplifiers [8]. Several topologies have been introduced to improve gain and output swing in a single-stage amplifier such as a two-stage, folded cascade and telescopic [9]- [11]. A two- ISSN: 2089-3272 IJEEI, Vol.…”

“…6, No. 4, December 2018: 471 -476 472 stage amplifier is often implemented to achieve higher gain as it provides higher output swing in the second stage [9]. It also provides better CMRR, lower power consumption and slew rate [8], [12].…”

“…However, the gain and output swing is lower compared to two-stage topology. It also consumes more power and reduced common mode rejection ratio (CMRR) and slew rate [9]- [11]. Telescopic topology provides a high-speed operation and lowers power consumption and noise compared to the other two topologies.…”

“…Telescopic topology provides a high-speed operation and lowers power consumption and noise compared to the other two topologies. However, telescopic topology has an equal performance in output swing and gain with folded cascade topology but still lesser than two-stage topology [9]- [11].…”

A 180 nm Low-Cost Operational Amplifier for IoT Applications

“…The semiconductor industry led by the CMOS scaling have resulted lately of portability and low-power electronic system. Integrating sensors among other and proposing new applications for the field of environmental monitoring and biomedecine [1]- [3]. However, analog designers had to face several challenges related to CMOS scaling and power consumption to maintain a stable and high enough Gain Band Width (GBW).…”