A 3.3-to-25V all-digital charge pump based system with temperature and load compensation for avalanche photodiode cameras with fixed sensitivity

作者：Mandai S^*; Charbon E

来源：Journal of Instrumentation, 2013, 8: P03013.

DOI：10.1088/1748-0221/8/03/P03013

• VLSI circuits
• Analogue electronic circuits
• Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases)
• Digital electronic circuits

This paper presents a digitally controlled charge pump (DCP) to supply high voltages, while ensuring temperature and load current independence of excess bias in cameras based on avalanche photodiodes. This is achieved through a single-photon avalanche diode (SPAD) based monitoring mechanism that continuously reconfigures the DCP using a feedback loop to compensate breakdown voltage variations by temperature and load current in real time. The sensitivity of the SPADs, or photon detection probability (PDP), is maintained to within 1.9% when the temperature shifts from 28 degrees C to 65 degrees C and the load current changes from 0 mu A to 100 mu A.

• 出版日期2013-3