Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:H2
Session:
Number:H2-3
Design of 1 V Operating Fully Differential OTA Using NMOS Inverters
Atsushi Tanaka, Hiroshi Tanimoto,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
A 1 V operating fully differential OTA is presented. We designed a 1 V operating fully differential OTA using NMOS inverters in place of traditional differential pair. To obtain high voltage gain, a two stage configuration has been used in which the first stage has feedforward to cancel common-mode signal and the second stage has common-mode feedback. This OTA was fabricated by 0.18 um CMOS technology. Measured dc gain is 40 dB and a unity gain frequency is 10 MHz. This OTA leads a solution to the low supply voltage issue in scaled CMOS analog circuits.