Maintains relatively high accuracy regardless of whether you are resting or exercising.

ams, a company specializing in sensors and analog ICs, announced the launch of the AS7000 as its first product family suitable for wearable devices.

Based on ams's optomechanical design, it was manufactured in a package measuring 6.1 millimeters (mm) in width, 4.1 mm in height, and 1 mm in thickness to be suitable for 24-hour wearable devices.

AS7000 refers to the AS7000 module, which includes an LED, photosensor, analog front-end (AFE), and controller, as well as the application software essential for implementing a precision optical HRM/HRV fitness band product. This module can measure skin temperature and skin resistance in conjunction with external sensors.

ams supports OEMs in successfully and rapidly implementing electrical, mechanical, and optical design guidelines. This guideline addresses important optomechanical challenges such as design and materials in wrist straps and housings, as well as specific optical design considerations such as the sensor, air gap, and glass thickness.


The AS7000 measures heart rate using the HRM technique, based on photoplethysmography (PPG) that detects the expansion and contraction of blood vessels via sampling light. Unlike conventional optical AFEs that provide raw PPG readings, the AS7000 integrates a digital processor that operates on an algorithm developed by ams. This algorithm converts PPG readings into digital HRM and HRV values.


When the AS7000 is used with an external accelerometer, this algorithm filters out motion artifacts that cause heartbeats and interfere with PPG readings, which are then mistaken for heartbeats. This means that relatively high accuracy can be maintained regardless of whether the user is at rest or exercising.


Ronald Tingl, Senior Marketing Manager for Biosensors, said, “ams’ AS7000, which reduces noise, corrects false motion, and saves energy, is ideal for customers looking for a total solution that enables faster time-to-market while adding health and fitness features to wearables.”