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http://dx.doi.org/10.7471/ikeee.2019.23.3.947

An ASIC Design for Photon Pulse Counting Particle Detection  

Jung, Jun-Mo (Dept. of Electronics Engineering, Kunsan National University)
Soh, Myung-Jin (Luxen Technologies, Inc)
Kim, Hyo-Sook (Luxen Technologies, Inc)
Han, AReum (Luxen Technologies, Inc)
Soh, Seul-Yi (Luxen Technologies, Inc)
Publication Information
Journal of IKEEE / v.23, no.3, 2019 , pp. 947-953 More about this Journal
Abstract
The purpose of this paper is to explore an ASIC design for estimating sizes and concentrations of airborne micro-particles by the means of integrating, amplifying and digitizing electric charge signals generated by photo-sensors as it receives scattered photons by the presence of micro-particles, consisting of a pre-amplifier that detects and amplifies voltage or current signal from photo-sensor that generates charges (hole-electron pairs) when exposed to visible rays, infrared rays, ultraviolet rays, etc. according to the intensity of rays; a shaper for shaping the amplified signal to a semi-gaussian waveform; two discriminators and binary counters for outputting digital signals by comparing the magnitude of the shaped signal with an arbitrary reference voltages. The ASIC with the proposed architecture and functional blocks in this study was designed with a 0.18um standard CMOS technology from Global Foundries and the operation and performances of the ASIC has been verified by the silicons fabricated by using the process.
Keywords
Photo-diode; Charge Sensitive Amplifier; Shaper; Hysteresis; Discriminator;
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