Coincidence resolving time readout circuit
AssigneeSensL Technologies Ltd.
InventorsSalvatore Gnecchi, John Carlton Jackson, Edoardo Charbon
Life of this patent
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Abstract
A coincidence resolving time readout circuit is described. An analog SiPM sensor for detecting photons and generating an SIPM output signal is provided. An ADC is configured to provide multiple threshold values for converting the analogue SiPM output signal to digital values. A time to digital converter configured to receive multiple digital values from the ADC and timestamp the digital values.
Claims19
A coincidence resolving time (CRT) readout circuit comprising:
- an analog SiPM sensor for detecting photons and generating an analog SiPM output signal, said analog SiPM sensor comprising a summed array of Geiger mode photodiodes electrically connected to a common electrode, wherein outputs of the Geiger mode photodiodes are summed to form the analog SiPM output signal on the common electrode;
- an ADC for converting the analog SiPM output signal to digital values according to corresponding ones of multiple threshold values;
- and
- a time to digital converter configured to receive the digital values from the ADC and timestamp them.
The CRT readout circuit as claimed in 4, wherein the voltage range is determined based on a plurality of parameters.
A coincidence resolving time readout circuit comprising:
- an analog SiPM sensor for detecting photons and generating an analog SiPM output signal on an output thereof, said analog SiPM sensor comprising a summed array of Geiger mode photodiodes electrically connected to a common electrode, wherein outputs of the Geiger mode photodiodes are summed to form the analog SiPM output signal on the common electrode;
- an ADC having an input coupled to the output of the analog SiPM sensor, and a plurality of outputs, wherein the ADC converts the analog SiPM output signal to a plurality of digital values provided to corresponding ones of the plurality of outputs according to corresponding ones of multiple threshold values;
- and
- a time to digital converter having a plurality of inputs coupled to the plurality of outputs of the ADC, and a plurality of outputs for providing a plurality of timestamps corresponding to the plurality of digital values.
Dependencies are inferred from the claim text.