用于单光子飞行时间测量的采样和保持时间-幅度转换器

2019 IEEE 9th Symposium on Computer Applications & Industrial Electronics (ISCAIE) Pub Date : 2019-04-01 DOI:10.1109/ISCAIE.2019.8743999

Sihui Zhu, Yue Xu, Ding Li, Zhong Wu

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引用次数: 2

摘要

提出了一种基于采样保持(S/H)原理的单光子飞行时间(TOF)测量时幅变换器(TAC)。设计的TAC具有高达34%的单光子雪崩二极管(SPAD)像素的高填充因子，为实现高密度时间相关单光子计数(TCSPC)探测器提供了潜力。布局后仿真结果表明，在100 ns时间满量程范围内，LSB的时间分辨率为195 ps。此外，TAC在整个可探测时间范围内具有0.25% LSB的低微分非线性(DNL)和0.15 LSB的低积分非线性(INL)。

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A Sample and Hold Time-to-Amplitude Converter for single photon time-of-flight measurement

A novel Time-to-Amplitude Converter (TAC) based on Sample and Hold (S/H) principle is presented for single photon time-of-flight (TOF) measurement. With a high fill factor as much as 34% for a single photon avalanche diode (SPAD) pixel, the designed TAC offers the potential to realize high-density time-correlated single photon counting (TCSPC) detectors. Post-layout simulation reveals that time resolution of 195 ps LSB is obtained over a 100 ns time full-scale range (FSR). Furthermore, the TAC is characterized by a low differential nonlinearity (DNL) of 0.25% LSB and a low integral nonlinearity (INL) of 0.15 LSB in the whole detectable time range.

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2019 IEEE 9th Symposium on Computer Applications & Industrial Electronics (ISCAIE)

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