| 講演抄録／キーワード |
| 講演名 |
2019-03-22 10:00
Noise Suppression Effect of Folding-Integration Applied to a column-parallel 3-stage pipeline ADC in a 2.1 μm 33-megapixel CMOS Image sensor
○Kohei Tomioka・Kohei Tomioka・Yasue Toshio・Ryohei Funatsu・Tomoki Matsubara（NHK STRL）・Tomohiko Kosugi・Sungwook Jun・Takashi Watanabe・Masanori Nagase・Toshiaki Kitajima・Satoshi Aoyama（Brookman Technology）・Shoji Kawahito（Shizuoka University） |
| 抄録 |
（和） |
(まだ登録されていません) |
| （英） |
This study investigated the noise suppression effect of multiple sampling applied to a 3-stage pipeline analog-to-digital converter (ADC) in a 33-megapixel, 120-fps 1.25-in CMOS image sensor. The 3-stage pipeline ADC is composed of folding-integration (FI), cyclic, and successive approximation register ADCs, and the multiple sampling for noise suppression is implemented in the FI ADC. The sampling number M is limited by the conversion interval of the FI ADC and the maximum sampling number is M = 6 at the 120-fps operation. To investigate the noise suppression effect of 120-fps operation, we measured the random noise of the pixel readout circuit to the sampling number M and compared with theoretical calculations. As a result, we confirmed that the measurement result corresponds reasonably well with the calculated result and the sampling number M = 6 is effective for noise suppression. Furthermore, the calculations revealed that the influence of 1/f noise of the source follower is dominant on the noise performance. |
| キーワード |
（和） |
/ / / / / / / |
| （英） |
UHDTV / 8K / Image Sensor / Noise Suppression / CMS / Folding-Integration / 3-stage pipeline ADC / |
| 文献情報 |
映情学技報, vol. 43, no. 11, IST2019-14, pp. 11-16, 2019年3月. |
| 資料番号 |
IST2019-14 |
| 発行日 |
2019-03-15 (IST) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| PDFダウンロード |
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