ams OSRAM AS7058

The AS7058 is an integrated multi-vital sign monitoring device, which provides a complete photoplethysmogram (PPG), electrocardiogram (ECG), body impedance (BioZ), and electrodermal activity (EDA).

PPG measures the pulse rate or blood oxygen by sampling light modulated by the blood vessels, which expand and contract as blood pulses through them. ECG is the reference for any measurement of the biopotential generated by the heart. With EDA, it is possible to measure the skin’s water content, and with BioZ, the body composition with an electrical system.

Key features

• 2 ADC (20 bit) for PPG acquisition
• 1 ADC (20 bit) for ECG/BIOZ acquisition
• Power consumption down to < 20μA @ 25 SPS
• 8 photodiode input pins

Additional features

• 8 emitters driven by 2 drivers up to 300mA at 500mV
• PPG SNR up to 120dB FS (white card loop back test)
• Advanced ambient light offset cancellation (AAOC)
• Excellent ECG, CMRR ~ 118dB, Noise ~ 0.68μVRMS
• Package: 2.815 x 2.545 x 0.5 mm³, WLCSP, 42 pins

Applications

• Wearable vital sign monitors
• Fitness band
• Smart watch
• Heart rate monitor
• Hearables
• ECG monitoring
• Medical patches
• Pulse-oximetry devices
• Single- and multi-frequency body impedance devices
• Pulse Arrival Time (PAT)
• Pulse Transit Time (PTT)
• Pulse Wave Velocity (PWV) assessments