Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Conferences, Workshops, Symposiums, and Seminars
  4. LinoSPAD: a time-resolved 256x1 CMOS SPAD line sensor system featuring 64 FPGA-based TDC channels running at up to 8.5 giga-events per second
 
conference paper

LinoSPAD: a time-resolved 256x1 CMOS SPAD line sensor system featuring 64 FPGA-based TDC channels running at up to 8.5 giga-events per second

Burri, Samuel  
•
Homulle, Harald
•
Bruschini, Claudio  
Show more
Berghmans, F
•
Mignani, Ag
2016
Optical Sensing And Detection Iv
Conference on Optical Sensing and Detection IV

LinoSPAD is a reconfigurable camera sensor with a 256x 1 CMOS SPAD (single-photon avalanche diode) pixel array connected to a low cost Xilinx Spartan 6 FPGA. The LinoSPAD sensor's line of pixels has a pitch of 24 pm and 40% fill factor. The FPGA implements an array of 64 TDCs and histogram engines capable of processing up to 8.5 giga-photons per second. The LinoSPAD sensor measures 1.68 mmx6.8 mm and each pixel has a direct digital output to connect to the FPGA. The chip is bonded on a carrier PCB to connect to the FPGA motherboard. 64 carry chain based TDCs sampled at 400 MHz can generate a timestamp every 7.5 ns with a mean time resolution below 25 ps per code. The 64 histogram engines provide time-of n-arrival histograms covering up to 50 ns. An alternative mode allows the readout of 28 bit timestamps which have a range of up to 4.5 ms. Since the FPGA TDCs have considerable non-linearity we implemented a correction module capable of increasing histogram linearity at real-time. The TDC array is interfaced to a computer using a super-speed USB3 link to transfer over 150k histograms per second for the 12.5 ns reference period used in our characterization. After characterization and subsequent programming of the post-processing we measure an instrument response histogram shorter than 100 ps FWHM using a strong laser pulse with 50 ps FWHM. A timing resolution that when combined with the high fill factor makes the sensor well suited for a wide variety of applications from fluorescence lifetime microscopy over Raman spectroscopy to 3D timen-of-flight.

  • Details
  • Metrics
Type
conference paper
DOI
10.1117/12.2227564
Web of Science ID

WOS:000387732400008

Author(s)
Burri, Samuel  
Homulle, Harald
Bruschini, Claudio  
Charbon, Edoardo  
Editors
Berghmans, F
•
Mignani, Ag
Date Issued

2016

Publisher

Spie-Int Soc Optical Engineering

Publisher place

Bellingham

Published in
Optical Sensing And Detection Iv
ISBN of the book

978-1-5106-0144-4

Total of pages

10

Series title/Series vol.

Proceedings of SPIE

Volume

9899

Start page

98990D

Subjects

CMOS

•

SPADs

•

FPGA

•

TDC

•

single-photon avalanche diodes

•

image sensor

•

reconfigurability

•

time-of-flight

•

3D imaging

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
AQUA  
Event nameEvent placeEvent date
Conference on Optical Sensing and Detection IV

Brussels, BELGIUM

APR 03-07, 2016

Available on Infoscience
January 24, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/133386
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés