Floating-gates transistors for precision analog circuit design: an overview

This paper presents an overview of floating-gate transistors with an emphasis on using them as programmable elements to correct mismatch inherent in analog circuit design. The design methodology is such that floating-gate MOSFETs play the role of programmable elements while forming an inherent part of the circuitry of interest, as well. Such an approach results in a compact architecture with minimal additional power. Accurate programming that is key to a successful implementation is discussed along with experimental results demonstrating floating-gate charge retention. An overview of several circuit design examples is provided to demonstrate the feasibility of using floating-gate transistors for precision analog circuit design