Development of an 8-channel time based readout ASIC for PET applications

Zhi Deng, Allan K. Lan, Xishan Sun, Chad Bircher, Yinong Liu, Yiping Shao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

An eight-channel readout ASIC has been developed for reading out signals from Silicon Photomultiplier (SiPM) for PET applications. It converts both signal charge and occurring time to digital timing pulses and only needs TDC. It has the advantages of simplified circuit design, reduced power consumption and suitable for large number of readout channels. The ASIC uses a fully current mode preamplifier to obtain high bandwidth (100MHz) with a few mW/ch power consumption. The dynamic range for charge measurement is adjustable and can be extended up to 103 pC. The chip has been fabricated in 0.35m 2P4M CMOS technology. A test prototype board for ASIC evaluation has been developed and the preliminary tests show the time jitter is 150ps (rms) by electronics only with injected 30 ns rise time signals, and the coincidence timing is about 1.7 ns (FWHM) for 511 keV photo peak events with LYSO/SiPM detectors. The charge dynamic range is measured to be 10bit for electronics only, and better than 1% for detector signals. A simple theoretic analysis shows that the timing and charge resolutions are limited dominately by the detector dark noise in our test and will be studied further. Preliminary evaluations show that the ASIC's functionalities and performance targets have been successfully achieved.

Original languageEnglish (US)
Title of host publicationIEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010
Pages1684-1689
Number of pages6
DOIs
StatePublished - Dec 1 2010
Event2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010 - Knoxville, TN, United States
Duration: Oct 30 2010Nov 6 2010

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010
CountryUnited States
CityKnoxville, TN
Period10/30/1011/6/10

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ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Cite this

Deng, Z., Lan, A. K., Sun, X., Bircher, C., Liu, Y., & Shao, Y. (2010). Development of an 8-channel time based readout ASIC for PET applications. In IEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010 (pp. 1684-1689). [5874061] (IEEE Nuclear Science Symposium Conference Record). https://doi.org/10.1109/NSSMIC.2010.5874061