Pixel-level A/D conversion using voltage reset technique
| Autor: | Li Minzeng, Wang Zhihua, Zhang Chun, Li Fule |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
Pixel business.industry Electrical engineering Hardware_PERFORMANCEANDRELIABILITY Condensed Matter Physics Chip Electronic Optical and Magnetic Materials Power (physics) Least significant bit CMOS Hardware_INTEGRATEDCIRCUITS Materials Chemistry Electronic engineering Hardware_ARITHMETICANDLOGICSTRUCTURES Electrical and Electronic Engineering Image sensor business Reset (computing) Voltage |
| Zdroj: | Journal of Semiconductors. 35:115009 |
| ISSN: | 1674-4926 |
| Popis: | This paper presents a 50 Hz 15-bit analog-to-digital converter (ADC) for pixel-level implementation in CMOS image sensors. The ADC is based on charge packets counting and adopts a voltage reset technique to inject charge packets. The core circuit for charge/pulse conversion is specially optimized for low power, low noise and small area. An experimental chip with ten pixel-level ADCs has been fabricated and tested for verification. The measurement result shows a standard deviation of 1.8 LSB for full-scale output. The ADC has an area of 45 × 45 μm2 and consumes less than 2 μW in a standard 1P-6M 0.18 μm CMOS process. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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