ON Semiconductor Struix system-in-package for precision sensing in portable medical devices

ON Semiconductor has introduced Struix, a semi-customisable system-in-package (SiP) for precision sensing and monitoring in a variety of mobile medical electronics including glucose monitors, heart rate monitors and electrocardiogram analysers.

The product utilises die-stacking technology to integrate a custom-designed analog front-end (AFE) on top of a 32-bit application specific standard product (ASSP) microcontroller (ULPMC10) to form a complete miniature system. By using standard and customisable components, it offers medical device manufacturers the design flexibility required to create medical sensor interface applications while improving time to market.

Stacking technology enables the product to achieve greater system integration and occupy less board space in medical devices than stand-alone solutions. The system’s power management subsystem monitors the device for fail-safe operation with a wide variety of battery voltages without requiring external components.

The microcontroller includes a12-bit analog-to-digital converter with three multiplexed inputs, a real-time clock, a phase-locked-loop and a temperature sensor. The product can be easily updated with future microcontrollers from ON Semiconductor, without replacing the AFE. The company offers a comprehensive and easy-to-use suite of development add-ins for IAR Systems to support the microcontroller, including CMSIS-based software interfaces.