Low-threshold voltage multipliers based on floating-gate charge-pumps

Chenling Huang, Shantanu Chakrabartty

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The paper presents a low-threshold voltage multiplier circuit that can be used for harvesting energy from ambient radio-frequency (RF) signals. At the core of the circuit is a charge-pump based on CMOS floating-gate transistor diodes (FGTD) whose threshold voltage can be adjusted using indirect programming. We show that the diodes can achieve threshold voltages less than 50mV, which is typically less than the conventional Schottky diodes fabricated in an equivalent process. A prototype of a 5-stage charge-pump is fabricated in a standard 0 5-μm CMOS process (Vth = 0.7V and -0.9V for nMOS and pMOS transistors respectively). Measurement results validate the functionality of the prototype for multiplying and regulating sub-threshold input signals. Using a 5-stage charge-pump we demonstrate operation at less than 300mV input signal range with an operating frequency ranging from 1-4MHz.

Original languageEnglish
Title of host publication2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
Pages205-208
Number of pages4
DOIs
StatePublished - 2008
Event2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008 - Baltimore, MD, United States
Duration: Nov 20 2008Nov 22 2008

Publication series

Name2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008

Conference

Conference2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
Country/TerritoryUnited States
CityBaltimore, MD
Period11/20/0811/22/08

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