The reference designs are self-contained demonstrations showing a complete signal chain solution using Intersil parts and an Energy Micro EFM32 Leopard Gecko microcontroller.
The complete reference designs are housed in a USB stick form factor. This compact design enables the user to power the application through the USB port and monitor the temperature through the GUI interface on a computer.
The solutions feature a variety of Intersil ICs, including the ISL28134 low noise, zero-drift op amp, the ISL26102 24-bit delta sigma converter, and the ISL21010 precision bandgap voltage reference. The Energy Micro EFM32LG332F128 is an extremely energy efficient 32-bit ARM Cortex MCU.
The thermocouple application circuit is calibrated at 25°C to within ± 0.1°C using a Fluke 54II Thermometer. The accuracy of this design is down to ±0.75% (limits of error).