TY - JOUR
T1 - TOFPET 2
T2 - A high-performance circuit for PET time-of-flight
AU - Di Francesco, Agostino
AU - Bugalho, Ricardo
AU - Oliveira, Luis
AU - Rivetti, Angelo
AU - Rolo, Manuel
AU - Silva, José Carlos da
AU - Varela, Joao
N1 - This work was supported by National Funds through European Union Seventh Framework Program FP7/2007-2013 Grant agreement no. 256984, through FCT Fundacao para a Ciencia e a Tecnologia, under project PEst-OE/EEI/U10066/2011 and PhD Grants SFRH/BD/84507/2012 and SFRH/BD/66008/2009.
PY - 2016/7/11
Y1 - 2016/7/11
N2 - We present a readout and digitization ASIC featuring low-noise and low-power for time-of flight (TOF) applications using SiPMs. The circuit is designed in standard CMOS 110 nm technology, has 64 independent channels and is optimized for time-of-flight measurement in Positron Emission Tomography (TOF-PET). The input amplifier is a low impedance current conveyor based on a regulated common-gate topology. Each channel has quad-buffered analogue interpolation TDCs (time binning 20 ps) and charge integration ADCs with linear response at full scale (1500 pC). The signal amplitude can also be derived from the measurement of time-over-threshold (ToT). Simulation results show that for a single photo-electron signal with charge 200 (550) fC generated by a SiPM with (320 pF) capacitance the circuit has 24 (30) dB SNR, 75 (39) ps r.m.s. resolution, and 4 (8) mW power consumption. The event rate is 600 kHz per channel, with up to 2 MHz dark counts rejection.
AB - We present a readout and digitization ASIC featuring low-noise and low-power for time-of flight (TOF) applications using SiPMs. The circuit is designed in standard CMOS 110 nm technology, has 64 independent channels and is optimized for time-of-flight measurement in Positron Emission Tomography (TOF-PET). The input amplifier is a low impedance current conveyor based on a regulated common-gate topology. Each channel has quad-buffered analogue interpolation TDCs (time binning 20 ps) and charge integration ADCs with linear response at full scale (1500 pC). The signal amplitude can also be derived from the measurement of time-over-threshold (ToT). Simulation results show that for a single photo-electron signal with charge 200 (550) fC generated by a SiPM with (320 pF) capacitance the circuit has 24 (30) dB SNR, 75 (39) ps r.m.s. resolution, and 4 (8) mW power consumption. The event rate is 600 kHz per channel, with up to 2 MHz dark counts rejection.
KW - Applications
KW - ASIC
KW - Electronics
KW - Front-end
KW - PET
KW - TOFPET
UR - http://www.scopus.com/inward/record.url?scp=84965006999&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2015.11.036
DO - 10.1016/j.nima.2015.11.036
M3 - Article
AN - SCOPUS:84965006999
SN - 0168-9002
VL - 824
SP - 194
EP - 195
JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -