Title :
New approach to design OTA using feedback control systems theory
Author :
Ferreira, Luis Henrique De Carvalho ; Pimenta, Tales Cleber
Author_Institution :
Univ. Fed. de Itajuba, Brazil
Abstract :
This paper describes a new approach to design OTA amplifiers, based on the well-known feedback control systems theory and on the response of a LTI system to a unit step. It is possible to specify the signal transient from the definition of overshoot and settling time. Consequently, from the proposed approach it can be verified that phase margin, unit gain frequency, DC gain and slew rate are functions of the natural oscillating frequency and the damping coefficient.
Keywords :
CMOS analogue integrated circuits; feedback amplifiers; operational amplifiers; CMOS analogue circuits; DC gain function; LTI system; OTA design; damping coefficient; feedback control systems theory; natural oscillating frequency; phase margin; settling time; signal transient; slew rate function; unit gain frequency; Circuits; Damping; Feedback control; Frequency; MOSFETs; Operational amplifiers; Poles and zeros; Signal analysis; Transfer functions; Transient analysis;
Conference_Titel :
Microelectronics, 2004. ICM 2004 Proceedings. The 16th International Conference on
Print_ISBN :
0-7803-8656-6
DOI :
10.1109/ICM.2004.1434763
