Design of a compact and low-power TDC for an array of SiPM's in 110nm CIS technology
| Autor: | Ion Vornicu, Ángel Rodríguez-Vázquez, Franco N. Bandi, Ricardo Carmona-Galan |
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| Přispěvatelé: | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Photomultiplier Engineering Pixel business.industry 020208 electrical & electronic engineering Detector Electrical engineering Biasing 02 engineering and technology 01 natural sciences Voltage-controlled oscillator Silicon photomultiplier CMOS 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electronic engineering business Image resolution |
| Zdroj: | idUS. Depósito de Investigación de la Universidad de Sevilla instname |
| Popis: | Silicon photomultipliers (SiPMs) are meant to substitute photomultiplier tubes in high-energy physics detectors and nuclear medicine. This is because of their -to name a few interesting properties- compactness, lower bias voltage, tolerance to magnetic fields and finer spatial resolution. SiPMs can also be built in CMOS technology. This allows the incorporation of active quenching and recharge schemes at cell level and processing circuitry at pixel level. One of the elements that can lead to finer temporal resolutions is the time-to-digital converter (TDC). In this paper we describe the architecture of a compact TDC to be included at each pixel of an array of SiPMs. It is compact and consumes low power. It is based on a voltage controlled oscillator that generates multiple internal phases that are interpolated to provide time resolution below the time delay of a single gate. Simulation results of a 11b TDC based on a 4-stage VCRO in 110nm CIS technology yield a time resolution of 80.0ps, a DNL of ±0.28 LSB, a INL ±0.52 LSB, and a power consumption of 850μW. Ministerio de Economía y Competitividad TEC2015-66878-C3-1-R Junta de Andalucía TIC 2012-2338 Office of Naval Research (USA) N000141410355 |
| Databáze: | OpenAIRE |
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