Time-Of-Flight distance sensor with enhanced dynamic range Online publication date: Tue, 18-Nov-2008
by Daniel Van Nieuwenhove, Ward Van Der Tempel, Riemer Grootjans, Maarten Kuijk
International Journal of Intelligent Systems Technologies and Applications (IJISTA), Vol. 5, No. 3/4, 2008
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 Complementary Metal Oxide Semiconductor 0.35 µm prototype measuring 50 μm × 50 μm with a fill factor of 60% are included.
Online publication date: Tue, 18-Nov-2008
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