Efficient Analog Sensor Data Acquisition Using MCU ADC
Acquiring Analog Sensor Data in Low-Power Applications
This article demonstrates data acquisition from analog sensors using an MCU’s internal ADC, focusing on power-efficient techniques. Two examples, temperature measurement with an RTD and current measurement using a sense resistor are outlined.
This article explores efficient data acquisition from analog sensors using microcontrollers with integrated ADCs, emphasizing power optimization for battery-operated systems.
It covers processing various analog output signals (voltage, current, frequency, phase) and presents two case studies: RTD-based temperature sensing and current measurement using a sense resistor. Both examples demonstrate power-saving techniques, including MCU sleep modes between measurements. Software for both examples is provided.
Key topics:
- Analog sensor data acquisition with the MCU’s internal ADC
- Power-efficient techniques and best-practices
- Two examples: RTD temperature measurement (voltage sensing) and current measurement using a sense resistor (current sensing)