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A new OTA design methodology based on feedback control systems theory

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2 Author(s)
de Carvalho Ferreira, L.H. ; Univ. Fed. de Itajuba, Brazil ; Pimenta, T.C.

This work describes a new approach to design OTA amplifiers, based on the feedback control systems theory and on the response of a LTI system to a unit step. Thus, 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. They restrict the design, given that it is not possible to obtain all values independently, since only two factors determine the other four values.

Published in:

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on  (Volume:2 )

Date of Conference:

6-9 Dec. 2004