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High Slew-Rate Quadruple-Voltage Mixed-Quenching Active-Resetting Circuit for SPADs in 0.35-μm CMOS for Increasing PDP
- Source :
- IEEE Solid-State Circuits Letters. 4:18-21
- Publication Year :
- 2021
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2021.
-
Abstract
- An optical sensor IC in 0.35- $\mu \text{m}$ CMOS is presented containing a single-photon avalanche diode (SPAD) and a fast quadruple-voltage quenching circuit (QVQC). The QVQC features a fast active quenching time of 0.93 ns, a total quenching time of 1.9 ns, and an adjustable total dead time (8.6–200 ns) to reduce the afterpulsing probability (APP). To verify the quenching performance, the circuit was integrated with a 40- $\mu \text{m}$ diameter SPAD. Experiments show the reduction of afterpulsing by a low detection threshold and by fast quenching with a slew rate of 13.8 GV/s. Thus, an APP of 3.2% at 27-ns dead time, a peak photon detection probability (PDP) of 67.6% at 652 nm, and a PDP of 34.7% at 854 nm were measured at 13.2-V excess bias.
Details
- ISSN :
- 25739603
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- IEEE Solid-State Circuits Letters
- Accession number :
- edsair.doi...........b804b9dee083765dc08b06d6ef28539b