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Experimental comparison of four different CMOS pixel architectures used in indirect Time-of-Flight distance measurement sensors

: Durini Romero, Daniel; Spickermann, Andreas; Fink, Johannes; Brockherde, Werner; Grabmaier, Anton; Hosticka, Bedrich J.

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International Image Sensor Society -IISS-:
International Image Sensor Workshop 2011. Online resource : Hakodate - Onuma Prince Hotel; June 8-11, 2011 Hokkaido, Japan
Online im WWW, 2011
International Image Sensor Workshop (IISW) <2011, Hokkaido>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IMS ()
CMOS Imaging; LDPD Pixel; große Pixelfläche; Transferzeit; hohe Geschwindigkeit; laterales Drift-Feld

Four different pixel architectures to be used in CMOS based indirect time-of-flight (ToF) rangers were designed, fabricated and characterised. The measured results are presented here for their direct comparison. Sharing a very similar, yet case optimised readout circuitry in each case, three fabricated CMOS rangers were based respectively on a pinned photodiode (PPD), a photogate, and a newly developed CMOS intrinsic lateral drift-field photodiode (LDPD), having a 40?m pixel pitch in each case, and finally compared to the pixel configuration based on a CMOS standard n-well based photodiode (PD). In all four cases, ranging is based on pulsed laser illumination and indirect time-of-flight measurements.