| A 14-bit Differential-Ramp Single-Slope Column-Level ADC for 640x512 Uncooled Infrared Imager | |
| Liu, Dahe ; Lu, Wengao ; Chen, Zhongjian ; Zhang, Yacong ; Lei, Shuyu ; Tang, Guo | |
| 2016 | |
| 关键词 | infrared imager column-level ADC coarse-fine TDC single slope low-power |
| 英文摘要 | This paper presents a low-power 14-bit column-level ADC for 640x512 size uncooled infrared imager. A novel differential-ramp single-slope (DRSS) structure is proposed in this work, which achieves 2x faster conversion speed and 3dB higher SNR performance compared with classical single-slope scheme. Moreover, a novel low-power area-saving result-consistent coarse-fine TDC scheme is proposed. The sensor with 17 mu m pixel pitch has been realized in 0.5 mu m 2P3M CMOS process and applied in the thermal imaging system. Power consumption of per ADC is 120 mu W. Measurement results demonstrate an average output RMS noise of 0.5LSB and a maximum nonlinearity of 3LSB.; CPCI-S(ISTP); wglu@pku.edu.cn; 1922-1925 |
| 语种 | 英语 |
| 出处 | IEEE International Symposium on Circuits and Systems (ISCAS) |
| 内容类型 | 其他 |
| 源URL | [http://ir.pku.edu.cn/handle/20.500.11897/459957]  |
| 专题 | 信息科学技术学院 |
| 推荐引用方式 GB/T 7714 | Liu, Dahe,Lu, Wengao,Chen, Zhongjian,et al. A 14-bit Differential-Ramp Single-Slope Column-Level ADC for 640x512 Uncooled Infrared Imager. 2016-01-01. |
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