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Edge-Based Technique for Ultra-Fast Gating of Large Array Imagers

Authors:
Octavian Maciu
Wilfried Uhring
Jean-Pierre Le Normand
Jean-Baptiste Kammerer
Foudil Dadouche

Keywords: SPAD, Ultra-fast Gating, Edge-triggered, Fast Pulse, skewless

Abstract:
Ultra-fast gating of large array imagers can be quite challenging to implement due to the distributed RC (Resistance Capacitance) nature of the metal wires used in all ICs (Integrated Circuits) for electrical connections. For the transmission of a signal across a long path, the metal line reduces the electrical bandwidth and adds a delay. The behavior of these lines has been modeled and a new solution is presented to circumvent these limitations. In this paper, we present an edge-based approach to the gating circuitry that allows sub nanosecond gating with a very low skew across the whole imager. Simulation data shows that our solution is an efficient way of reducing the effect of the distributed RC line delay with a small penalty on surface area and consumption.

Pages: 24 to 28

Copyright: Copyright (c) IARIA, 2015

Publication date: August 23, 2015

Published in: conference

ISSN: 2308-4405

ISBN: 978-1-61208-425-1

Location: Venice, Italy

Dates: from August 23, 2015 to August 28, 2015