| Article appears in April 2021 Issue

Industry’s thinnest sensor for blood oxygen saturation

10-03-2021
The AS7038RB sensor is the industry’s thinnest dedicated sensor for blood oxygen saturation (SpO2) and electrocardiogram (ECG) measurement, at just 3.70 mm × 3.10 mm × 0.65 mm.

Small sensors for innovative applications in medical wearables and remote diagnostic equipment are essential for the healthcare industry.

The ams AS7038RB and AS7038GB sensors and AS7030B sensor module are based on photoplethysmography (PPG) and electrocardiogram (ECG), two popular methods for heart rate monitoring (HRM) and heart rate variability (HRV), which measure the pulse rate by sampling light modulated by blood vessels.

The AS7038RB sensor is the industry’s thinnest dedicated sensor for blood oxygen saturation (SpO2) and electrocardiogram (ECG) measurement, at just 3.70 mm × 3.10 mm × 0.65 mm.

The sensor’s combination of small size, integrated functionality, and a high-performance signal chain enables designers to incorporate vital monitoring capability to small consumer products such as earbuds, smart watches and wristbands, as well as to medical devices such as patches and oximeters. 

The sensor’s unique on-wafer interference filter technology developed by ams enables it to capture optical signals in the 590nm-710nm and near infrared (800nm-1050nm) wavelength bands for SpO2 measurement, while blocking interference from ambient light at other wavelengths. 

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

Mouser Electronics, the authorised global distributor with the newest semiconductors and electronic components, is now stocking AS7038xB vital sign sensors and the AS7030B vital sign sensor module from ams.

As a global authorized distributor, Mouser offers the world’s widest selection of the newest semiconductors and electronic components — in stock and ready to ship. Mouser’s customers can expect 100% certified, genuine products that are fully traceable from each of its manufacturer partners. 

To help speed customers’ designs, Mouser’s website hosts an extensive library of technical resources, including a Technical Resource Center, along with product data sheets, supplier-specific reference designs, application notes, technical design information, engineering tools and other helpful information.

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