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Wide dynamic range (WDR) CMOS imaging sensors (CIS) are being designed for new portable, implantable and sensory applications, which demand low power consumption. Compared to normal CISs, high quality WDR CISs generally consume much more power. Up to now, the power consumption of a WDR CIS has never been formally studied. This paper focuses to model and analyze the power consumption of two major WDR...
Current sample-and-hold (SHI) stage is important for reducing the signal distortion of bio-medical current detectors. Previous SHIs achieve high linearity only with high power consumption. This paper introduces a low-distortion switched-current (SI) sample-and-hold stage for high-performance current sampling of weak currents, by applying constant charge injection on a weakly inverted MOS transistor...
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