EP 2726905 A2 20140507 - RADIATION DETECTOR COMPRISING A CIRCUIT FOR INJECTING A CALIBRATED QUANTITY OF COUNTER-CHARGES
Title (en)
RADIATION DETECTOR COMPRISING A CIRCUIT FOR INJECTING A CALIBRATED QUANTITY OF COUNTER-CHARGES
Title (de)
STRAHLUNGSDETEKTOR MIT EINER SCHALTUNG ZUR EINSPEISUNG EINER KALIBRIERTEN MENGE VON GEGENLADUNGEN
Title (fr)
DETECTEUR DE RAYONNEMENT COMPRENANT UN CIRCUIT D'INJECTION DE CONTRE-CHARGES EN QUANTITE CALIBREE
Publication
Application
Priority
- FR 1102062 A 20110630
- EP 2012062189 W 20120625
Abstract (en)
[origin: WO2013000849A2] The invention relates to an electronic circuit especially comprising: a comparator (12) receiving a threshold potential (Vcomp) and the potential of an integration node (N), said node being able to store electrical charges generated by a photosensitive element (11); a meter (13) connected at the outlet of the comparator (12); and a circuit (41) for injecting counter-charges. Said injection circuit comprises: a capacitor (143) storing counter-charges; a transfer transistor (M2) that can be controlled in the conducting state for transferring counter-charges from a terminal (A) of the capacitor (143) to the integration node (N) on every oscillation of the comparator (12), the transfer of the counter-charges triggering a variation of a potential (Va) at said terminal (A) of the capacitor (143); and a regulation circuit (42) for controlling the transfer transistor (M2), said regulation circuit comprising means (425) for controlling the transfer transistor (M2) in the conducting state when the potential at the terminal (A) of the capacitor (143) is between two pre-determined potentials (Vp2, Vcomp2) that are independent of the transfer transistor (M2).
IPC 8 full level
G01T 1/24 (2006.01); G01T 1/16 (2006.01); H03K 23/60 (2006.01)
CPC (source: EP US)
G01T 1/18 (2013.01 - US); G01T 1/24 (2013.01 - EP US); G01T 1/247 (2013.01 - EP US); G01T 7/005 (2013.01 - US); H01L 27/146 (2013.01 - US); H01L 27/14612 (2013.01 - US); H04N 25/773 (2023.01 - EP)
Citation (search report)
See references of WO 2013000849A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2013000849 A2 20130103; WO 2013000849 A3 20130131; CN 103874933 A 20140618; EP 2726905 A2 20140507; FR 2977413 A1 20130104; FR 2977413 B1 20130809; JP 2014526161 A 20141002; US 2015034832 A1 20150205; US 9234969 B2 20160112
DOCDB simple family (application)
EP 2012062189 W 20120625; CN 201280032512 A 20120625; EP 12730909 A 20120625; FR 1102062 A 20110630; JP 2014517622 A 20120625; US 201214129232 A 20120625