An Auto-Zero Stabilized Voltage Buffer with a Trimmed Input Current of 0.2pA

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172 Downloads (Pure)

Abstract

This paper presents an input-current trimming scheme for auto-zero amplifiers. Since their input current is mainly due to charge injection,the scheme operates by trimming the clock swing,and hence the charge injection,of two dummy input switches. At room temperature,the trimming scheme reduces the maximum input current of an auto-zero stabilized voltage buffer from 1pA to 0.2pA (13 samples) over its full input voltage range (0 to 1.3V). This increases to 0.4pA over temperature (0 to 85°C),which is well below the leakage of typical ESD diodes,and is the lowest input current ever reported for an auto-zero amplifier.

Original languageEnglish
Title of host publicationESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference
PublisherIEEE
Pages257-260
Number of pages4
ISBN (Electronic)978-1-7281-1550-4
ISBN (Print)978-1-7281-1551-1
DOIs
Publication statusPublished - 2019
Event45th IEEE European Solid State Circuits Conference, ESSCIRC 2019 - Cracow, Poland
Duration: 23 Sept 201926 Sept 2019

Publication series

NameESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference

Conference

Conference45th IEEE European Solid State Circuits Conference, ESSCIRC 2019
Country/TerritoryPoland
CityCracow
Period23/09/1926/09/19

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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