A Design Basis for Composite Cascode Stages Operating in the Subthreshold/Weak Inversion Regions

A Design Basis for Composite Cascode Stages Operating in the Subthreshold/Weak Inversion Regions

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 t...

Full description

Bibliographic Details
Main Author: Waddel, Taylor Matt
Format: Others
Published: BYU ScholarsArchive 2012
Subjects:
composite cascode
weak
moderate
strong
subthreshold
inversion level
low power operation
high gain
low frequency
low noise
Electrical and Computer Engineering
Online Access:https://scholarsarchive.byu.edu/etd/2934
https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3933&context=etd
Description
Summary: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.

Similar Items