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Time of flight distance sensor with enhanced dynamic range Host Publication: Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet Authors: D. Van Nieuwenhove, W. van der Tempel, R. Grootjans and M. Kuijk Publication Date: Sep. 2007
Abstract: A time-of-flight distance measurement sensor is presented. Detection and mixing is done with an in-substrate current assisted photonic demodulator. Background light suppression and high dynamic range is achieved using a variable transimpedance amplifier. The pixel also comprises sample and hold circuitry and special low pass filters, for in-pixel averaging, with a 10 Hz to 10 kHz tuneable cut-off frequency. Proof-of-principle measurements on a standard CMOS 0.35 um prototype measuring 50 um x 50 um with a fill factor of 60% are included.
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