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ams OSRAM AS7056 and AS7057 Medical and Health Sensors are next-generation Analog Frontend (AFE) vital sign sensors. The AS7056/AS7057 allows users to detect biosignals such as photoplethysmogram (PPG), pulse transit time (PTT), and proximity. PPG is the most used HRM method, measuring the pulse rate by sampling light modulated by blood vessels, which expand and contract as blood pulses through them. Apart from HRM/HRV, optical Blood Pressure and SpO2 are also enabled by the two independent working photodiode inputs of the AS7056/AS7057.
The ams OSRAM AS7056 and AS7057 Medical and Health Sensors are optimized to support space-limited applications such as in-ear vital sign monitoring. The AS7056 feature two LEDs and one VCSEL driver output, samples up to three photodiode inputs, and supports proximity detection integrated into one of the PPG signal channels. The AS7057 offers three LED driver outputs, samples up to three photodiode inputs, and supports proximity detection integrated into one of the PPG signal channels. The devices deliver high flexibility for several LED and photodiode arrangements in different applications. Additionally, the medical and health sensors employ two ADC channels for simultaneous PPG measurements and an automatic photodiode offset control.
The AS7056/AS7057 is housed in a Small Wafer-Level-Chip-Scale-Package (WLCSP). The sensor’s low-power design and small form factor are particularly well-suited for application in earbuds, fitness bands, smartwatches, sports watches, and smart patches.
