Multi-channel waveform sampling ASIC for animal PET system

K. Shimazoe, J. Y. Yeom, H. Takahashi, T. Kojo, Y. Minamikawa, K. Fujita, H. Murayama

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

3 Citations (Scopus)

Abstract

We have designed and fabricated 2.4mm by 2.4mm 2ch 100MHz/6bits waveform sampling front-end (WSFE) ASIC for PET(Positron Emission Tomography) with multiplexer readouts. This chip was designed for GSO-APD gamma-ray detectors and has the function of "waveform sampling" at the speed of 100MHz.One channel of this chip consists of charge-sensitive preamplifier, VGA (Variable Gain Amplifier), folding-ADC and digital readout circuit and converts the waveform of detector signal to digital values at the speed of ∼100MHz.This digitization in early stage enables flexible digital processing to get timing and energy information of gamma-rays which is indispensable for PET system. Digital circuit has three ways to read signals out, parallel readout, 32words FIFO memory and 2 to 1 multiplexer. The 2 to 1 multiplexer reduces the number of ASIC pins half by using fast clock with double frequency and enables to include more channels in a chip. We designed new 18channel WSFE ASIC which includes 2 to 1 multiplexer, 3 toi multiplexer and 6 to 1 multiplexer. These multiplexers will greatly decrease the number of pins and realize high integration. This chip will be used for APD-based DOI PET system which requires multi-channel ASIC.

Original languageEnglish
Title of host publication2006 IEEE Nuclear Science Symposium - Conference Record
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2473-2475
Number of pages3
ISBN (Print)1424405610, 9781424405619
DOIs
Publication statusPublished - 2006 Jan 1
Externally publishedYes
Event2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD - San Diego, CA, United States
Duration: 2006 Oct 292006 Nov 4

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume4
ISSN (Print)1095-7863

Other

Other2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD
CountryUnited States
CitySan Diego, CA
Period06/10/2906/11/4

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ASJC Scopus subject areas

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

Cite this

Shimazoe, K., Yeom, J. Y., Takahashi, H., Kojo, T., Minamikawa, Y., Fujita, K., & Murayama, H. (2006). Multi-channel waveform sampling ASIC for animal PET system. In 2006 IEEE Nuclear Science Symposium - Conference Record (pp. 2473-2475). [4179526] (IEEE Nuclear Science Symposium Conference Record; Vol. 4). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2006.354412