DocumentCode :
2547403
Title :
STiC - A mixed mode chip for SiPM ToF applications
Author :
Wei Shen ; Briggl, Konrad ; Huangshan Chen ; Fischer, P. ; Gil, Alvaro ; Harion, Tobias ; Ritzert, Michael ; Schultz-Coulon, Hans-Christian
Author_Institution :
Kirchhoff Inst. fur Phys., Univ. Heidelberg, Heidelberg, Germany
fYear :
2012
fDate :
Oct. 27 2012-Nov. 3 2012
Firstpage :
877
Lastpage :
881
Abstract :
STiC is a mixed mode 16-channel ASIC chip in UMC 0.18 /Lm CMOS technology aiming at Silicon Photomultiplier (SiPM) readout with optimal timing resolution. It is designed for ToF measurements in HEP and medical imaging applications and dedicated in particular to the ENDOToFPET·US project, which aims at providing a powerful endoscopic Time· of-Flight PET system for early prostate and pancreas cancer diagnostics. The goal of this endoscopic system is to provide a spatial resolution of the order of 1 mm and a Time-of-Flight resolution of 200 ps FWHM. The STiC chip has a differential structure. However, SiPMs can be connected either differentially or single-endedly. The timing and charge information of the input signal - both required for a high-resolution ToFPET system - are encrypted into two time stamps and processed later by an embedded TDC module with a timing resolution of better than 20 ps. The digitized data are stored first on an on-chip SRAM block and then transferred via a 160 MBit LVDS serial link using 8/10-bit encoding. The simulated single pixel timing jitter is less than 15 ps for Hamamatsu SI0362-11-50 MPPCs. A special linearization method has been used to obtain a linear charge response in a very wide range. The total power consumption is about 20 m W per channel. Design details as well as first measurement results will be presented.
Keywords :
CMOS integrated circuits; application specific integrated circuits; cancer; elemental semiconductors; endoscopes; patient diagnosis; photomultipliers; silicon; timing circuits; ASIC chip; CMOS technology; ENDOToFPET-US project; HEP; Hamamatsu S10362-11-50 MPPC; LVDS serial link; SRAM; STiC; Si; SiPM; encoding; endoscopic system; endoscopic time-of-flight PET system; linearization method; medical imaging; pancreas cancer diagnostics; prostate cancer diagnostics; silicon photomultiplier readout; time 200 ps; timing resolution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
ISSN :
1082-3654
Print_ISBN :
978-1-4673-2028-3
Type :
conf
DOI :
10.1109/NSSMIC.2012.6551231
Filename :
6551231
Link To Document :
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