How to use high accuracy digital temperature sensors in health monitoring wearables Written by Jeff Shepard
Accurate digital temperature measurements are important in a range of applications including wearables, medical monitoring devices, health and fitness trackers, cold chain and environmental monitoring, and industrial computing systems. While widely applied, the implementation of highly accurate digital temperature measurements frequently involves temperature sensor calibration or linearization, as well as higher power consumption which can be an issue for compact, ultra-low power applications with multiple acquisition modes. The design challenges can quickly mount, causing cost overruns and delayed schedules.
Complicating the matter, some applications involve multiple temperature sensors sharing a single communication bus. In addition, some production test setups need to be calibrated according to the U.S. National Institute of Standards and Technology (NIST), while verification equipment needs to be calibrated by an ISO/IEC-17025 accredited laboratory. Suddenly, what seemed a straightforward function becomes both intimidating and costly. This article briefly describes the requirements for high-accuracy temperature measurements in mobile and battery-powered
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