%0 Journal Article
%T Design of Two-Stage Fully-Differential Operational Transconductance Amplifier Using a Standard 0.35¦Ìm CMOS Process
%A Frederick Ray I. Gomez
%A Tanya Vanessa Abaya
%J Asian Journal of Engineering and Technology
%D 2019
%R 10.24203/ajet.v7i1.5680
%X The paper presents a design of a two-stage fully-differential operational transconductance amplifier (OTA) for a 10-bit 40-Msamples/s Nyquist rate analog-to-digital converter (ADC) using £¿a standard 0.35¦Ìm complementary metal-oxide semiconductor (CMOS) process.£¿ A telescopic cascode topology is implemented as main stage, with common source amplifiers as output stage for the differential outputs. The open loop amplifier achieved a gain of 108dB, while the closed loop gain is at 12dB with settling time of less than 11ns for an accuracy of 0.5%.£¿ Total output noise achieved is 63.4uVrms.£¿ Loop unity gain bandwidth is 205MHz with phase margin of 77.6¡ã. The design has a dynamic range of 88.3dB, and power consumption of 26.6mW from a 3V supply
%K [OTA
%K CMOS
%K amplifier
%K ADC]
%U https://www.ajouronline.com/index.php/AJET/article/view/5680