Title :
A folded-cascode OTA based on complementary differential-pairs for HF applications
Author :
Olivera-Romero, Genaro ; Silva-Martinez, Jose
Author_Institution :
Integrated Cirsuits Design Group, Nat. Inst. for Astrophys. Opt. & Electron., Puebla, Mexico
Abstract :
In this paper, several previously reported folded-cascode Operational Transconductance Amplifiers (OTAs) and a proposed structure based on complementary differential pairs are compared. For the same power consumption and similar transistor dimensions the proposed OTA presents both higher bandwidth and faster response. It is shown that for a typical switched-capacitor integrator, using 0.5 pF capacitors, 1% settling times below to 3 ns can be achieved
Keywords :
CMOS analogue integrated circuits; differential amplifiers; operational amplifiers; radiofrequency amplifiers; HF applications; SC integrator; bandwidth; complementary differential-pairs; folded-cascode OTA; operational transconductance amplifiers; response; switched-capacitor integrator; Astrophysics; Capacitors; Circuits; Energy consumption; Frequency; Hafnium; Integrated optics; Parasitic capacitance; Stimulated emission; Transconductance;
Conference_Titel :
Design of Mixed-Mode Integrated Circuits and Applications, 1999. Third International Workshop on
Conference_Location :
Puerto Vallarta
Print_ISBN :
0-7803-5588-1
DOI :
10.1109/MMICA.1999.833595
