App note: Health monitoring

App note from OSRAM on design recommendation for LEDs and photodiodes intended for health monitoring. Link here (PDF) Wearable applications enable the monitoring of vital signs for healthcare reasons and also for daily life activity tracking. This application note provides basic information on health monitoring as well as an overview of the potential products and […]

App note: Ambient light sensors – General application note

Different ambient sensors differs on their ability to sense specific wavelength and introduce different ambient levels compared to human eye, here’s a general application note from OSRAM. Link here (PDF) This application note introduces discusses ambient light sensing. The different types of ambient light sensors are described and related to specific applications.

Photodiode amplifier design

Craig writes, “I recently designed an infrared sensor board (dubbed “IRis”) for my friend’s Defcon talk. This video walks through the circuit design of the photodiode amplifier, and discusses some of the pitfalls associated with photodiode amplifier design.” More details at Analog Zoo homepage.  All project files are available on github.