A 512x512 SPAD Laser Speckle Autocorrelation Imager in Stacked 65/40nm CMOS

Francesco Mattioli Della Rocca; Edbert Sie; Ahmet Erdogan; Lars Fisher; Andrew Matheson; Neil Finlayson; Alistair Gorman; Istvan Gyongy; Hanning Mai; Thierry Lachaud; R Forsyth; Francesco Marsili; Robert K. Henderson

A 512x512 SPAD Laser Speckle Autocorrelation Imager in Stacked 65/40nm CMOS

Francesco Mattioli Della Rocca, Edbert Sie, Ahmet Erdogan, Lars Fisher, Andrew Matheson, Neil Finlayson, Alistair Gorman, Istvan Gyongy, Hanning Mai, Thierry Lachaud, R Forsyth, Francesco Marsili, Robert K. Henderson

School of Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract / Description of output

We present a single-photon avalanche diode (SPAD) autocorrelation imager implemented in 65/40nm 3D-stacked CMOS for laser speckle blood flow monitoring. The shared per-pixel SRAM architecture provides a compact 41.68 mm pitch 128x128 resolution parallel autocorrelation function operating at 0.5T Op/s and a lag-time of 1ms. SNR gains due to high BSI SPAD NIR sensitivity and on-chip averaging extends source-detector separation to 40 mm indicative of the sensitivity required to discriminate extracerebral artifacts from deep-tissue blood flow in future wearable neuromonitoring systems.

Original language	English
Publication status	Published - 18 Jun 2024

Cite this

@conference{208fb82ee0fc4c84891d037958a53502,

title = "A 512x512 SPAD Laser Speckle Autocorrelation Imager in Stacked 65/40nm CMOS",

abstract = "We present a single-photon avalanche diode (SPAD) autocorrelation imager implemented in 65/40nm 3D-stacked CMOS for laser speckle blood flow monitoring. The shared per-pixel SRAM architecture provides a compact 41.68 mm pitch 128x128 resolution parallel autocorrelation function operating at 0.5T Op/s and a lag-time of 1ms. SNR gains due to high BSI SPAD NIR sensitivity and on-chip averaging extends source-detector separation to 40 mm indicative of the sensitivity required to discriminate extracerebral artifacts from deep-tissue blood flow in future wearable neuromonitoring systems.",

author = "{Mattioli Della Rocca}, Francesco and Edbert Sie and Ahmet Erdogan and Lars Fisher and Andrew Matheson and Neil Finlayson and Alistair Gorman and Istvan Gyongy and Hanning Mai and Thierry Lachaud and R Forsyth and Francesco Marsili and Henderson, {Robert K.}",

year = "2024",

month = jun,

day = "18",

language = "English",

}

TY - CONF

T1 - A 512x512 SPAD Laser Speckle Autocorrelation Imager in Stacked 65/40nm CMOS

AU - Mattioli Della Rocca, Francesco

AU - Sie, Edbert

AU - Erdogan, Ahmet

AU - Fisher, Lars

AU - Matheson, Andrew

AU - Finlayson, Neil

AU - Gorman, Alistair

AU - Gyongy, Istvan

AU - Mai, Hanning

AU - Lachaud, Thierry

AU - Forsyth, R

AU - Marsili, Francesco

AU - Henderson, Robert K.

PY - 2024/6/18

Y1 - 2024/6/18

N2 - We present a single-photon avalanche diode (SPAD) autocorrelation imager implemented in 65/40nm 3D-stacked CMOS for laser speckle blood flow monitoring. The shared per-pixel SRAM architecture provides a compact 41.68 mm pitch 128x128 resolution parallel autocorrelation function operating at 0.5T Op/s and a lag-time of 1ms. SNR gains due to high BSI SPAD NIR sensitivity and on-chip averaging extends source-detector separation to 40 mm indicative of the sensitivity required to discriminate extracerebral artifacts from deep-tissue blood flow in future wearable neuromonitoring systems.

AB - We present a single-photon avalanche diode (SPAD) autocorrelation imager implemented in 65/40nm 3D-stacked CMOS for laser speckle blood flow monitoring. The shared per-pixel SRAM architecture provides a compact 41.68 mm pitch 128x128 resolution parallel autocorrelation function operating at 0.5T Op/s and a lag-time of 1ms. SNR gains due to high BSI SPAD NIR sensitivity and on-chip averaging extends source-detector separation to 40 mm indicative of the sensitivity required to discriminate extracerebral artifacts from deep-tissue blood flow in future wearable neuromonitoring systems.

UR - https://ieeexplore.ieee.org/document/10631557

UR - https://vlsi24.mapyourshow.com/8_0/sessions/session-details.cfm?ScheduleID=114

UR - https://www.vlsisymposium.org/vlsi-2024-online/

M3 - Paper

ER -

A 512x512 SPAD Laser Speckle Autocorrelation Imager in Stacked 65/40nm CMOS

Abstract / Description of output

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Lighting the Way to a Healthy Nation - Optical 'X-rays' for Walk Through Diagnosis & Therapy

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A 512x512 SPAD Laser Speckle Autocorrelation Imager in Stacked 65/40nm CMOS

Abstract / Description of output

Other files and links

Fingerprint

Projects

Lighting the Way to a Healthy Nation - Optical 'X-rays' for Walk Through Diagnosis & Therapy

Cite this