Mikroe Oximeter 2 Click

Mikroe Oximeter 2 Click is suitable for measuring blood oxygen saturation, and features the Analog Devices ADPD144RI PPG optical sensor for photoplethysmography detection of blood oxygenation. It combines LED emitters and sensitive 4-channel photodiodes with a custom ASIC. This provides optical isolation between the integrated LED emitters and the detection photodiodes to improve the signal-to-noise ratio (SNR). PPG detection of blood oxygenation is achieved by synchronous detection in red and infrared wavelengths. Synchronous measurement allows rejection of both DC and AC ambient light interference with low power consumption.