5.2 Energy-Efficient Low-Noise CMOS Image Sensor with Capacitor Array-Assisted Charge-Injection SAR ADC for Motion-Triggered Low-Power IoT Applications
5.2 Energy-Efficient Low-Noise CMOS Image Sensor with Capacitor Array-Assisted Charge-Injection SAR ADC for Motion-Triggered Low-Power IoT Applications
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5.2 用于运动触发低功耗物联网应用的具有电容器阵列辅助电荷注入 SAR ADC 的节能低噪声 CMOS 图像传感器
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
D. Blaauw
中科院分区：
文献类型：
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作者：
K. Choo;Li Xu;Yejoong Kim;J. Seol;Xiao Wu;D. Sylvester;D. Blaauw
随着物联网越来越多地融入我们的日常生活，对不同传感器模式的需求，特别是成像，正在上升。物联网成像器通常结构紧凑，电池体积小，因此必须设计为低功耗（提高电池寿命）和高图像质量（最大化效用）。先前报道的传感器[1，2]，沿着这项工作，采用全阵列捕获的运动检测（MD）触发，其中MD在重子采样帧上执行，以实现连续的低功耗操作。MD将高耗能的全阵列捕获限制在检测到活动的情况下。为了进一步降低功耗，需要解决全帧捕获能量本身的问题，这通常由ADC主导。
As IoT is increasingly integrated into our everyday life, the demand for different sensor modalities, especially imaging, is rising. IoT imagers are often compact and have small form-factor batteries and thus must be designed with both low power (improving battery life) and high image quality (maximizing utility). Previously reported sensors [1, 2], along with this work, adopt motion-detection (MD) triggering of full-array capture where MD is performed on a heavily subsampled frame to enable continuous low-power operation. MD limits energy-hungry full-array captures to cases where activity is detected. To further reduce power consumption, the full-frame capture energy itself needs to be addressed, which is typically dominated by the ADC.