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Design of Low Power Comparator for SAR ADC in Biomedical Applications

Md.Kareemoddin, A. Ashok Kumar, Dr. Syed Musthak Ahmed

Power consumption is one of the main design constraints in today ICs. For systems that are powered by small non rechargeable batteries over the entire life time, such as medical implant devices ultra low power consumption is important. In these systems ADCs are key components to interface between analog world and digital domain. This paper is going to address the design challenges and strategies of low power ADCs for biomedical implant devices. The comparator in the SAR ADC takes more power consumption than other blocks, in this paper low power comparator is designed for reducing power consumption in SAR ADC.