학술논문
Design of 1 V Operating Fully Differential OTA Using NMOS Inverters
Document Type
Conference
Author
Source
ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications. 2008-07 2008(7):417-420
Subject
Language
Korean
Abstract
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 commonmode feedback. This OTA was fabricated by 0.18 ㎛ CMOS technology. Measured dc gain is 40 ㏈ and a unity gain frequency is 10 ㎒. This OTA leads a solution to the low supply voltage issue in scaled CMOS analog circuits.