DESIGN SOLUTION 7113

Choose an Electrochemical AFE with a Sweet Spot For Continuous Glucose Monitoring

By: Michael Jackson, Andrew Burt

Abstract:

Diabetes sufferers must continuously monitor their glucose levels to help them decide when to take the medication that they need to manage their condition. Until recently, this was commonly done using handheld blood glucose monitors in a process that was both disruptive and invasive. A new type of continuous glucose monitor (CGM), located in a disposable wearable patch, monitors glucose level beneath the skin. This technique is less invasive and can instantly send an alert to the wearer whenever medication is required. In this design solution, we explain the role and functionality required of the electrochemical sensor AFE used in a CGM. We then propose a tiny, low-power electrochemical AFE IC that meets these requirements, making it suitable for CGM and other body fluid analysis applications.