A baseline restorer for charge-sensitive amplifiers in a 500-nm CMOS process

Angel Abusleme, Renzo Barraza, Sergey Kuleshov

Research output: Contribution to conferencePaper

Abstract

© 2018 IEEE. Charge-sensitive amplifiers (CSAs), widely used as front-ends in pulse processors for capacitive detectors, require a feedback network to set the operation point, deal with leakage currents and restore the baseline voltage upon the arrival of signals. Passive feedback networks are simple and reliable solutions that accomplish the task, but cannot modify the operation point in order to accommodate an input with different polarity, and do not offer sufficient flexibility to deal with a wide range of leakage current or input rates. The Krummenacher feedback solves these drawbacks at the cost of a large compensation capacitor, which is required for stability purposes. In this work, a novel configurable feedback network is presented. Based on the same principle as the Krummenacher network, this circuit relies on the design parameters to ensure stability. This work shows analysis, design and test results from a recent implementation in a 500-nm CMOS process.
Original languageEnglish
Pages1-4
Number of pages4
DOIs
Publication statusPublished - 28 Jun 2018
Externally publishedYes
Event9th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2018 - Proceedings -
Duration: 28 Jun 2018 → …

Conference

Conference9th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2018 - Proceedings
Period28/06/18 → …

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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