With the advanced development of CMOS manufacturing process, the capacitive-array in the successive approximation register analog-to-digital converters (SAR ADCs) has become the dominant source of energy consumption and silicon area. This requires an immediate attention to design a more energy-efficient capacitive switching method while maintaining excellent linearity and noise rejection. A hybrid switching method is proposed for the SAR ADC with dual-capacitive arrays architecture, which consists of MSB-split \(V_{CM}\)-based charge recovery symmetrical switching and set-and-down asymmetrical switching methods for the coarse and fine resolution conversions, respectively. As a result, it has achieved 99.53% switching energy reduction and 73.44% area reduction compared to the conventional switching method.

随着CMOS制造工艺的先进发展，逐次逼近寄存器模数转换器（SAR ADC）中的电容阵列已成为能耗和硅面积的主要来源。这需要立即注意，以设计一种更节能的电容开关方法，同时保持出色的线性度和噪声抑制能力。针对具有双电容阵列架构的SAR ADC，提出了一种混合切换方法，该方法包括基于MSB分裂\（V_ {CM} \）的电荷恢复对称切换和针对粗略和粗略设置的上下非对称切换方法精细分辨率转换。结果，与传统的开关方法相比，它实现了99.53％的开关能量减少和73.44％的面积减少。