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Energy efficient switching scheme based on MSB-split structure for SAR ADC

机译:基于SAR ADC MSB分割结构的节能开关方案

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摘要

An energy efficient switching algorithm for low voltage SAR ADC is presented. By the combination of MSB-split and merge-and-split techniques, this switching method consumes negative energy in the MSB bit switching, which contributes to 99.76% switching energy reduction comparing to the conventional solution. Furthermore, without requiring for a third reference voltage makes it especially suitable for ADC design under low supply voltage. Additionally, LSB-down technique is employed, which reduces the total capacitor DAC area by 50%. The simulated differential-nonlinearity and integrated-nonlinearity are 0.27 and 0.21LSB, respectively, demonstrating that the proposed switching algorithm has a relatively good linearity.
机译:提出了一种用于低压SAR ADC的节能开关算法。 通过MSB分割和合并和分割技术的组合,该切换方法消耗了MSB位切换中的负能量,这有助于与传统解决方案相比的切换能量减少99.76%。 此外,不需要第三参考电压,特别适用于低电源电压下的ADC设计。 另外,采用LSB-DOWN技术,其将总电容器DAC面积减小50%。 模拟差分 - 非线性和集成非线性分别为0.27和0.21LSB,证明所提出的切换算法具有相对良好的线性度。

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