US 12,372,669 B2
Front-end electronic circuitry for a photon counting application
Fridolin Michel, Au (CH); Charalambos Andreou, Tann (CH); Massimo Rigo, Munich (DE); Matthias Steiner, Seiersberg (AU); and Juan Miguel Gavillero, Paterna (ES)
Assigned to AMS SENSORS SINGAPORE PTE. LTD., Singapore (SG)
Appl. No. 18/251,784
Filed by ams International AG, Jona (CH)
PCT Filed Nov. 3, 2021, PCT No. PCT/EP2021/080506
§ 371(c)(1), (2) Date May 4, 2023,
PCT Pub. No. WO2022/101071, PCT Pub. Date May 19, 2022.
Claims priority of application No. 10 2020 129 875.7 (DE), filed on Nov. 12, 2020.
Prior Publication US 2023/0417932 A1, Dec. 28, 2023
Int. Cl. G01T 1/20 (2006.01); A61B 6/42 (2024.01)
CPC G01T 1/20 (2013.01) [A61B 6/4241 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A front-end electronic circuitry for a photon counting application, comprising:
an output node to provide an output signal,
an input node to receive a input signal,
a charge sensitive amplifier comprising an amplifier circuit having an input side being coupled to the input node and an output side to provide a charge sensitive amplifier output signal, and a capacitor being arranged in a feedback path between the input side and the output side of the amplifier circuit,
a controllable switch being arranged in parallel to the capacitor,
a delay circuit to provide a delay circuit output signal, the delay circuit output signal being a time-delayed representation of the charge sensitive amplifier output signal,
an output signal generation circuit being coupled to the output node to provide the output signal,
wherein the output signal generation circuit is configured to generate the output signal by subtracting the delay circuit output signal from the charge sensitive amplifier output signal.