Multi-Correlated Double Sampling vs. analog shaper: Low power ASIC for pixelated CdTe

A. Michalowska; O. Gevin; O. Limousin; C. S. Tindall

doi:10.1109/NSSMIC.2012.6551221

Multi-Correlated Double Sampling vs. analog shaper: Low power ASIC for pixelated CdTe

A. Michalowska^*, O. Gevin, O. Limousin, C. S. Tindall

^*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband

Abstract

Comparison of continuous time and discrete time noise filtering is presented. Two sets of measurements have been performed: one with the classical analog semi-Gaussian shaper (CR-RC²), the other with M-CDS (Multi-Correlated Double Sampling). The Charge Sensitive Amplifier used in the measurements is optimized for input capacitance of 1 pF and detector dark current below 5 pA. With the analog shaper the Equivalent Noise Charge is characterized as a function of peaking time. ENC in the M-CDS method is characterized against the sampling frequency and the number of samples. The two methods have been compared. They show very similar noise performances: in each case the ENC as low as 30 electrons rms was achieved with the input capacitance of 0.3 pF and CSA power consumption of 14 μW. Spectroscopy measurements with the CSA connected to Si diode were performed using the ⁵⁷Co source. The achieved FWHM resolutions were 390 eV at 14 keV with the analog shaper and 440 eV at 14 keV with the M-CDS method.

Originalsprache	englisch
Titel	2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
Seiten	834-838
Seitenumfang	5
DOIs	https://doi.org/10.1109/NSSMIC.2012.6551221
Publikationsstatus	Veröffentlicht - 2012
Extern publiziert	Ja
Veranstaltung	2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012 - Anaheim, CA, USA / Vereinigte Staaten Dauer: 29 Okt. 2012 → 3 Nov. 2012

Konferenz

Konferenz	2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
Land/Gebiet	USA / Vereinigte Staaten
Ort	Anaheim, CA
Zeitraum	29/10/12 → 3/11/12

ASJC Scopus subject areas

Strahlung
Kern- und Hochenergiephysik
Radiologie, Nuklearmedizin und Bildgebung

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10.1109/NSSMIC.2012.6551221

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Dieses zitieren

Michalowska, A, Gevin, O, Limousin, O & Tindall, CS 2012, Multi-Correlated Double Sampling vs. analog shaper: Low power ASIC for pixelated CdTe. in 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012., 6551221, S. 834-838, 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012, Anaheim, CA, USA / Vereinigte Staaten, 29/10/12. https://doi.org/10.1109/NSSMIC.2012.6551221

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title = "Multi-Correlated Double Sampling vs. analog shaper: Low power ASIC for pixelated CdTe",

abstract = "Comparison of continuous time and discrete time noise filtering is presented. Two sets of measurements have been performed: one with the classical analog semi-Gaussian shaper (CR-RC2), the other with M-CDS (Multi-Correlated Double Sampling). The Charge Sensitive Amplifier used in the measurements is optimized for input capacitance of 1 pF and detector dark current below 5 pA. With the analog shaper the Equivalent Noise Charge is characterized as a function of peaking time. ENC in the M-CDS method is characterized against the sampling frequency and the number of samples. The two methods have been compared. They show very similar noise performances: in each case the ENC as low as 30 electrons rms was achieved with the input capacitance of 0.3 pF and CSA power consumption of 14 μW. Spectroscopy measurements with the CSA connected to Si diode were performed using the 57Co source. The achieved FWHM resolutions were 390 eV at 14 keV with the analog shaper and 440 eV at 14 keV with the M-CDS method.",

keywords = "Integrated circuits, X-ray, detection, Front-end",

author = "A. Michalowska and O. Gevin and O. Limousin and Tindall, {C. S.}",

year = "2012",

doi = "10.1109/NSSMIC.2012.6551221",

language = "English",

isbn = "9781467320306",

pages = "834--838",

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T2 - 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012

AU - Michalowska, A.

AU - Gevin, O.

AU - Limousin, O.

AU - Tindall, C. S.

PY - 2012

Y1 - 2012

N2 - Comparison of continuous time and discrete time noise filtering is presented. Two sets of measurements have been performed: one with the classical analog semi-Gaussian shaper (CR-RC2), the other with M-CDS (Multi-Correlated Double Sampling). The Charge Sensitive Amplifier used in the measurements is optimized for input capacitance of 1 pF and detector dark current below 5 pA. With the analog shaper the Equivalent Noise Charge is characterized as a function of peaking time. ENC in the M-CDS method is characterized against the sampling frequency and the number of samples. The two methods have been compared. They show very similar noise performances: in each case the ENC as low as 30 electrons rms was achieved with the input capacitance of 0.3 pF and CSA power consumption of 14 μW. Spectroscopy measurements with the CSA connected to Si diode were performed using the 57Co source. The achieved FWHM resolutions were 390 eV at 14 keV with the analog shaper and 440 eV at 14 keV with the M-CDS method.

AB - Comparison of continuous time and discrete time noise filtering is presented. Two sets of measurements have been performed: one with the classical analog semi-Gaussian shaper (CR-RC2), the other with M-CDS (Multi-Correlated Double Sampling). The Charge Sensitive Amplifier used in the measurements is optimized for input capacitance of 1 pF and detector dark current below 5 pA. With the analog shaper the Equivalent Noise Charge is characterized as a function of peaking time. ENC in the M-CDS method is characterized against the sampling frequency and the number of samples. The two methods have been compared. They show very similar noise performances: in each case the ENC as low as 30 electrons rms was achieved with the input capacitance of 0.3 pF and CSA power consumption of 14 μW. Spectroscopy measurements with the CSA connected to Si diode were performed using the 57Co source. The achieved FWHM resolutions were 390 eV at 14 keV with the analog shaper and 440 eV at 14 keV with the M-CDS method.

KW - Integrated circuits

KW - X-ray

KW - detection

KW - Front-end

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U2 - 10.1109/NSSMIC.2012.6551221

DO - 10.1109/NSSMIC.2012.6551221

M3 - Conference paper

AN - SCOPUS:84881571508

SN - 9781467320306

SP - 834

EP - 838

BT - 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012

Y2 - 29 October 2012 through 3 November 2012

ER -

Multi-Correlated Double Sampling vs. analog shaper: Low power ASIC for pixelated CdTe

Abstract

Konferenz

ASJC Scopus subject areas

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