SpO2 sensor having partitioned electronics

A sensing device for acquiring data from a finger. The device includes a carrier board having a stacked portion with a finger side and a canopy side. A tip wing extends from the stacked portion and wraps around the finger. Electrical components are coupled to the carrier board, including a first circuit board on the canopy side of the stacked portion, and one or more optical components electrically on the tip wing. The optical components are configured to transmit light towards the finger and to detect the light from the finger. The carrier board electrically couples the electrical components to acquire the data from the finger. A power system is positioned between the canopy side and the finger side of the carrier board, where the power system provides power to the electrical components via the carrier board. A cover secures the carrier board to the finger.