Abstract
This paper presents an enhanced technique to improve frequency compensation in three stages operational transconductance amplifiers (OTA). Based on the reversed nested Miller technique, it uses a current subtractor in the common node of the Miller capacitors, thus significantly improving the gain-band width product (GBW) while ensuring unconditional stability and removing the feed forward path. Also, compared to other existing frequency compensation techniques such as AC boosting compensation or active feedback frequency compensation, the proposed approach exhibits better figure of merits with less power consumption. The simulations of a three-stage OTA with 100 pF capacitive load exhibited 5 pF of total compensation capacitors, 63° phase margin and 4.75 MHz as GBW.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
