Research on the Design of Low-Power SAR ADC for Wearable Health Monitoring Devices

In the current era of rapid technological development, the proliferation of wearable devices and Internet of Things technology is significantly elevating the demand for low-power, high-performance analog-to-digital converters (ADCs). Especially in health monitoring, these devices must boost battery life and efficiency without sacrificing performance. Consequently, the research and development of low-power successive approximation register (SAR) ADCs is essential for advancing these technologies. This paper explores the design of low-power SAR (Successive Approximation Register) ADCs. Due to their digital architecture and low power consumption, SAR ADCs are particularly well-suited for these applications. Moreover, it outlines the working principle, performance indicators, and low-power design strategies of SAR ADCs, while also discussing their applications in health monitoring, and addressing the challenges and future development prospects. While high accuracy and resolution are essential, this research primarily aims to reduce power consumption via innovative design. The results emphasize the potential of SAR ADCs in enhancing health monitoring devices, and continuous research aims to achieve higher accuracy and lower power consumption