A Programmable Piecewise Linear Large-Signal CMOS Amplifier


Journal Article

A high-speed CMOS piecewise linear approximation circuit is presented that can be programmed for correction of nonlinearity after fabrication. The basic building block generates a linear segment, for which slope and position can be adjusted. Adjustments to adapt to arbitrary functions are done with floating gate devices fabricated in standard CMOS technology. The circuit is a voltage-to-current converter with an input range of the full power-supply voltage swing. In an implementation with 18 linear segments less than 0.15% error over rail-to-rail input range was achieved for a linear transfer function. Examples of strongly nonlinear transfer functions approximated to 0.5% accuracy are shown. The large-signal 3-dB frequency is 10 MHz. The implementations are done solely with 2-μm channel length devices. © 1993 IEEE

Full Text

Duke Authors

Cited Authors

  • Thomsen, A; Brooke, MA

Published Date

  • January 1, 1993

Published In

Volume / Issue

  • 28 / 1

Start / End Page

  • 84 - 89

Electronic International Standard Serial Number (EISSN)

  • 1558-173X

International Standard Serial Number (ISSN)

  • 0018-9200

Digital Object Identifier (DOI)

  • 10.1109/4.179207

Citation Source

  • Scopus