Composite cascode stages have been used in operational amplifier designs to achieve ultra-high gain at very low power. The flexibility and simplicity of the stage makes it an appealing choice for low power op-amp designs. Op-amp design using the composite cascode stage is often made more difficult through the lack of a design process. A design process to aid in the selection of the MOSFET dimensions is provided in this thesis. This process includes a table-based method for selection of the widths and lengths of the MOSFETs used in the composite cascode stage. Equations are also derived for the gain, bandwidth, and noise of the composite cascode stage with each of the devices operating in the various regions of inversion.
College and Department
Ira A. Fulton College of Engineering and Technology; Electrical and Computer Engineering
BYU ScholarsArchive Citation
Waddel, Taylor Matt, "A Design Basis for Composite Cascode Stages Operating in the Subthreshold/Weak Inversion Regions" (2012). Theses and Dissertations. 2934.
composite cascode, weak, moderate, strong, subthreshold, inversion level, low power operation, high gain, low frequency, low noise