ams AS7038xB and AS7030B vital sign sensors

Monday, 29 March, 2021 | Supplied by: Mouser Electronics

The ams AS7038RB and AS7038GB vital sign sensors and AS7030B vital sign sensor module are based on photoplethysmography (PPG) and electrocardiogram (ECG), two methods for heart rate monitoring (HRM) and heart rate variability (HRV), which measure the pulse rate by sampling light modulated by blood vessels. The small sensors are suitable for innovative applications in medical wearables and remote diagnostic equipment, such as disposable patches used for blood oxygen saturation (SpO2) and electrocardiogram (ECG) measurement.

The AS7038RB is claimed to be the industry’s thinnest dedicated sensor for SpO2 measurement, at just 3.70 x 3.10 x 0.65 mm. The sensor’s combination of small size, integrated functionality and high-performance signal chain enables designers to incorporate vital monitoring capability into small consumer products such as earbuds, smart watches and wristbands, as well as medical devices such as patches and oximeters. On-wafer interference filter technology developed by ams enables the sensor to capture optical signals in the 590–710 nm and near infrared (800–1050 nm) wavelength bands for SpO2 measurement, while blocking interference from ambient light at other wavelengths.

The AS7038GB version features peak sensitivity at the 525 nm (green) wavelength for use in HRM and HRV measurement, while the AS7030B HRM/HRV sensor module integrates two 535 nm LEDs in a single 3.55 x 6.2 x 1 mm package.

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