Comparative Power Analysis of Comparator Architectures for Energy-Efficient SAR ADC Design

Successive Approximation Register (SAR) Analog-to-Digital Converters (ADCs) are widely employed in low-power applications due to their high energy efficiency and moderate-speed operations. Among the key building blocks of SAR ADCs, the comparator plays a crucial role in determining the conversion accuracy, decision speed, and overall power consumption. Since the comparator is a major contributor to power dissipation, optimizing its design is essential for improving the energy efficiency of SAR ADCs. This paper presents a comparative analysis of different architectures used in SAR ADCs, evaluating their power consumption to determine the most energy-efficient design. The results of this study provide valuable insights for designing low-power SAR ADCs, with implications for energy-constrained applications such as IoT devices, biomedical sensors, and energy-efficient embedded systems.