Analogue, Mixed Signal, LSI


Healthcare sensors for wearable devices

31 July 2019 Analogue, Mixed Signal, LSI

Designers creating next-generation wearable health and fitness applications can reduce temperature measurement power with the MAX30208, as well as shrink optical solution size with the MAXM86161 from Maxim Integrated Products.

To provide value, wearable health and fitness monitors require greater accuracy in measuring human biometrics such as body temperature and heart rate, but device designers have been limited by sensor accuracy for small, battery-powered, body-worn devices. Maxim’s two new continuous-monitoring body sensors provide higher degrees of accuracy in measuring vital signs such as temperature, heart rate and blood-oxygen saturation (SpO2).

The MAXM86161 in-ear heart-rate monitor and pulse oximeter is a tiny, fully integrated solution that delivers highly accurate heart-rate and SpO2 measurements from hearables and other wearable applications. It is optimised for in-ear applications with its small package size and optimised signal-to-noise ratio (SNR). In addition, an integrated analog front-end (AFE) eliminates the additional AFE typically needed to procure a separate chip and connect to the optical module.

The MAX30208 digital temperature sensor delivers clinical-grade temperature measurement accuracy (±0,1°C) with fast response time to changes in temperature. It also meets the power and size demands of small, battery-powered applications such as smartwatches and medical patches. It measures temperature at the top of the device and does not suffer from thermal self-heating like some alternative solutions. The MAX30208 is compatible with up to four I2C addresses to enable multiple sensors on the same IC bus. The chip can be attached to either a PCB or a flex printed circuit (FPC).

For more information contact CST Electronics, +27 11 608 0070, sales@cstelectronics.co.za



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