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

Nikola Krstajić, Richard Walker, James Levitt, Simon P. Poland, David Li, Simon Ameer-Beg, Robert K. Henderson

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    8 Citations (Scopus)


    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.

    Original languageEnglish
    Title of host publicationESSCIRC 2014
    Subtitle of host publication40th European Solid State Circuits Conference (ESSCIRC)
    Number of pages4
    ISBN (Electronic)9781479956968
    ISBN (Print)9781479956944
    Publication statusPublished - 3 Nov 2014
    Event40th European Solid-State Circuit Conference, ESSCIRC 2014 - Venezia Lido, Italy
    Duration: 22 Sept 201426 Sept 2014


    Conference40th European Solid-State Circuit Conference, ESSCIRC 2014
    CityVenezia Lido


    • Fluorescence
    • Photonics
    • Arrays
    • Detectors
    • Coordinate measuring machines
    • Image resolution

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Electrical and Electronic Engineering


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