| Autor: |
Calvin Yi-Ping Chao, Thomas M.-H. Wu, Shang-Fu Yeh, Kuo-Yu Chou, Honyih Tu, Chih-Lin Lee, Chin Yin, Philippe Paillet, Vincent Goiffon |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
IEEE Journal of the Electron Devices Society, Vol 7, Pp 227-238 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2168-6734 |
| DOI: |
10.1109/JEDS.2019.2893299 |
| Popis: |
The effects of X-ray irradiation on the random noises, especially the random telegraph noises (RTN), of a 45-nm on 65-nm stacked CMOS image sensor with 8.3M 1.1 μm pixels are investigated. It is found that before X-ray irradiation the dominant type of RTN among the noisiest pixels is the source follower (SF) MOSFET channel RTN. In contrast, after X-ray irradiation up to a total ionizing dose of 1 Mrad(SiO2), the RTN becomes dominated by the variable transfer-gate-induced sense node (SN) leakage. These two different types of RTN can be distinguished by their dependence on the transfer gate (TG) OFF voltage and the time between the correlated double sampling (CDS). The magnitude of the RTN from the variable SN leakage is proportional to the CDS time and can be suppressed effectively by increasing the TG OFF voltage, whereas the SF RTN is independent of the CDS time or the TG OFF voltage. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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