Design of 1V Operating Fully Differential OTA Using NMOS Inverters in 0.18µm CMOS Technology

Atsushi TANAKA, Hiroshi TANIMOTO
2009 IEICE transactions on electronics  
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 μm CMOS technology. Measured dc gain is 40 dB and a unity gain frequency is 10 MHz. This OTA leads a solution to
more » ... e low supply voltage issue in scaled CMOS analog circuits.
doi:10.1587/transele.e92.c.822 fatcat:gdempnakmbgijie75n6zgtaoci