Artículo
A CMOS Imager for Time-of-Flight and Photon Counting Based on Single Photon Avalanche Diodes and In-Pixel Time-to-Digital Converters
Autor/es | Vornicu, Ion
Carmona Galán, Ricardo Rodríguez Vázquez, Ángel Benito |
Fecha de publicación | 2014 |
Fecha de depósito | 2018-05-07 |
Publicado en |
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Resumen | The design of a CMOS image sensor based on single-photon avalanche-diode (SPAD) array with in-pixel time-to-digital converter (TDC) is presented. The architecture of the imager is thoroughly described with emphasis on the ... The design of a CMOS image sensor based on single-photon avalanche-diode (SPAD) array with in-pixel time-to-digital converter (TDC) is presented. The architecture of the imager is thoroughly described with emphasis on the characterization of the TDCs array. It is targeted for 3D image reconstruction. Several techniques as fast quenching/recharge circuit with tunable dead-time and time gated-operation are applied to reduce the noise and the power consumption. The chip was fabricated in a 0.18 m standard CMOS process and implements a double functionality: time-of-flight (ToF) estimation and photon counting. The imager features a programmable time resolution of the array of TDCs down to 145 ps. The measured accuracy of the minimum time bin is lower than 1LSB DNL and 1.7 LSB INL. The TDC jitter over the full dynamic range is less than 1 LSB. |
Identificador del proyecto | N000141410355
TEC2012-38921- C02 IPT-2011-1625-430000 IPC- 20111009 CDTI TIC 2012-2338 |
Cita | Vornicu, I., Carmona Galán, R. y Rodríguez Vázquez, Á.B. (2014). A CMOS Imager for Time-of-Flight and Photon Counting Based on Single Photon Avalanche Diodes and In-Pixel Time-to-Digital Converters. Romanian Journal of Information Science and Technology, 17 (4), 353-371. |
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