| Autor: |
P. Vančura, J. Gečnuk, J. Jakovenko, Z. Janoška, J. Jirsa, V. Kafka, O. Korchak, A. Kostina, D. Lednický, M. Marčišovská, M. Marčišovský, L. Tomášek |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Journal of Instrumentation. 17:T05016 |
| ISSN: |
1748-0221 |
| DOI: |
10.1088/1748-0221/17/05/t05016 |
| Popis: |
This paper proposes a low power 10-bit asynchronous fully-differential column analog to digital converter (ADC) with successive approximation (SAR) and charge redistribution in a 180 nm SoI technology. The ADC is designed for use in Spacepix-2 monolithic active pixel sensor. A novel folded architecture of internal capacitive digital to analog converter (CDAC) is proposed. The total capacitance of CDAC is 512 fF, with a single unit capacitor capacitance only 0.5 fF and a size of 2.5 × 1.4 μm2. The total input capacitance of the proposed column ADC is only 220 fF. Two columns of a pixel matrix share a single ADC to double layout width. The layout area is 120 × 923 μm2. The sample rate is 4 MSps with power consumption of 225 μW from 1.8 V power supply. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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