A 2.6μW Monolithic CMOS Photoplethysmographic Sensor Operating with 2μW LED Power

Photoplethysmography (PPG) enables wearable vitals monitoring. Nevertheless, it is still limited by the LEDs driving current in the range of mA. We present a PPG sensor integrating an array of dedicated pinned-photodiodes (PPD) with the full readout chain in 180 nm CIS process. The sensor features a total input referred noise of 0.68 e-RMS per PPD, independently of the input light, and achieves 4.7 µW total power consumption, including 2 µW LED power, at 1.38 bpm heart rate average error.


Presented at:
IEEE International Solid- State Circuits Conference - (ISSCC), San Francisco, CA, USA, February 17-21, 2019
Year:
Mar 07 2019
ISBN:
978-1-5386-8531-0
Laboratories:




 Record created 2019-03-21, last modified 2019-08-12


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)