CN-0281 is a Circuits from the Lab™ reference circuit designed by Analog Devices. It has been engineered and tested for quick and easy system integration to help solve today’s analog, mixed-signal, and RF design challenges.
The document presents a reference circuit (CN-0281) designed for accurate thermocouple temperature monitoring. It utilizes the ADuC7060 or ADuC7061 precision analog microcontroller, which integrates dual 24-bit sigma-delta ADCs and an ARM7 core. The design measures Type T thermocouples with a sensitivity of approximately 40 µV/°C by amplifying signals using a programmable gain amplifier (PGA) set to a gain of 32.
The circuit uses the ADuC7060 or the ADuC7061 precision analog microcontroller.
In the source code, an ADC sampling rate of 4 Hz was chosen.