This paper proposes a methodology for the parametric design of operational transconductance amplifiers. In the proposed methodology, amplifier sizing is performed in two stages: an equation-based design scheme performs an approximate design, followed by optimization of the design results with genetic algorithms. The feasibility of this method was investigated with extensive simulation. For demo...

T h e technique of mirror biasing i s introduced and applied to a very high gain two stage CMOS cascode op-amp, in order to desensitize i ts output voltage to bias variations. Various performance metrics like low frequency common mode and power supply rejection ratios, slew rate and the sensitivity of the systematic offset are substantially improved. The improved performance i s theoretically p...

The problems resulting from the use of nano-MOSFETs in design operational trans-conductance amplifiers (OTAs) lead to an urgent need for new techniques produce high-performance metrics OTAs suitable very high-frequency applications. In this paper, enhancement and equations proposed single-stage folded-cascode (FCOTA) are presented its various performance metrics. FCOTA adopts (FC) current sourc...