A 256 × 8 SPAD line sensor for time resolved fluorescence and raman sensing

ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC) Pub Date : 2014-11-03 DOI:10.1109/ESSCIRC.2014.6942042

N. Krstajić, R. Walker, J. Levitt, S. Poland, Day-Uei Li, S. Ameer-Beg, R. Henderson

引用次数: 7

Abstract

A 256 × 8 single photon avalanche diode (SPAD) time-resolved single photon counting (TCPSC) line sensor enables both fluorescence and Raman spectroscopy in a single device. The 23.78μm pitch, 46.8% fill-factor SPAD array is implemented in a 0.13μm CMOS image sensor process. Integrating time to digital converters (TDCs) implement on-chip mono-exponential fluorescence lifetime pre-calculation allowing timing of 65k photons/pixel at 500s-1 line rate at 40ps resolution using centre-of-mass method (CMM). TCSPC histograms may also be generated with 320ps bin resolution for multi-exponential analysis.

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用于时间分辨荧光和拉曼传感的256 × 8 SPAD线传感器

一个256 × 8单光子雪崩二极管(SPAD)时间分辨单光子计数(TCPSC)线传感器使荧光和拉曼光谱在一个单一的设备。在0.13μm CMOS图像传感器工艺中实现了23.78μm间距，46.8%填充因子的SPAD阵列。积分时间到数字转换器(tdc)实现片上单指数荧光寿命预计算，允许以500s-1线速率在40ps分辨率下使用质心法(CMM)定时65k光子/像素。TCSPC直方图也可以生成320ps bin分辨率的多指数分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC)

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