SBAA858 August   2026 ADS131M08 , MSPM0G3507

 

  1.   1
  2.   Abstract
  3. 1Introduction to ADS131M08
    1. 1.1 Major Applications of ADS131M08
  4. 2Introduction to MSPM0 Microcontroller and Its SPI Peripheral
    1. 2.1 MSPM0 SPI Interface
    2. 2.2 MSPM0's SPI Operation Mode
  5. 3Introduction to ADS131M08 Pin Functions
    1. 3.1 ADS131M08 Pin Functions
    2. 3.2 ADS131M08 SPI Interface
  6. 4ADS131M08 Commands and Data Frame Structure Details
    1. 4.1 Basic Control Commands:
    2. 4.2 Register Access Commands:
    3. 4.3 Key Features of Communication Protocol:
  7. 5ADS131M08 Registers
  8. 6Typical ADS131M08 Configuration Process and Key Points
    1. 6.1 ADS131M08 Initialization
    2. 6.2 Key Points of ADS131M08 Initialization
  9. 7MSPM0 SPI Configuration and API Function Implementation
    1. 7.1 MSPM0 SPI Sending and Receiving Functions
    2. 7.2 ADS131M08 Command Sending Function
    3. 7.3 ADS131M08 Register Write Function
    4. 7.4 ADS131M08 Register Read Function
    5. 7.5 ADS131M08's ADC Data Read Function
  10. 8Conclusion
  11. 9References

1.1 Major Applications of ADS131M08

The ADS131M08 delivers wide dynamic range, low power consumption, and energy measurement-specific features that make it ideal for many industrial applications.

Three-phase four-wire/three-wire energy metering: Simultaneous sampling of three-phase (A/B/C) voltages and currents (total of six channels) combined with zero-order/neutral current sensing (the 7th and 8th channels) is the ideal solution for building IEC Class 0.5S/0.2S three-phase e-meters. The simultaneous sampling feature ensures power calculation without phase error.

Simultaneous multi-sensor acquisition: In structural health monitoring and industrial control, it is often necessary to collect signals from multiple strain gauges, thermocouples, or pressure sensors at the same time. The simultaneous sampling capability of the ADS131M08 accurately captures the state of all sensors at the same physical instant and is critical for analyzing instantaneous correlation between variables.

Motor control and power analysis: It can be used to monitor phase voltages and phase currents of three-phase motors, enabling accurate power, efficiency, and power factor calculations. The eight channels can be expanded to simultaneously monitor other critical parameters like DC bus voltage.

Acoustic array and vibration analysis: Simultaneous acquisition of multiple microphones or accelerometers via the ADS131M08, combined with subsequent signal processing algorithms, can be used for source positioning, modal analysis, and so forth.

The ADS131M08 offers significant system-level advantages over the M02/4/6 models in terms of channel integration and data consistency, eliminating the complexity of clock synchronization and data stitching using multi-chip ADCs.