Phase-Isolated DAQ Reference Design for Simultaneous Capture of Voltage and Current(TIDA-01472)

This reference design showcases a data acquisition architecture that uses a dual channel SAR ADC paired with a digital isolator with integrated power converter to achieve phase isolated, simultaneous measurement of voltage and current. Accuracy of <0.3% is achieved using 12-bit, 2-channel, 750ksps ADC while the digital isolator isolates both data and power. An ARM® core MCU with multi-SPI peripherals is used to interface with ADC as it provides flexibility to the interface. A two-chip data acquisition architecture allows users to adapt the ADC performance to their dynamic range and resolution requirements.

Возможности

Phase isolated simultaneous voltage and current measurement using highly integrated components. Simultaneous AC voltage and current measurement accuracy:– AC Voltage: < ±0.25% for 5 to 300 V. – AC Current: < ±0.3% for 0.5 to 50 A Data acquisition specifications: 12-bit, 14-bit at 750ksps pin compatible ADC family Reinforced isolator at 100Mbps data rate with integrated power converter Digital processing specifications: ARM® 32-Bit Cortex®-M4F CPU for advanced measurement and monitoring computations Multi-SPI interface with 8-channel DMA to interface with multiple ADCs Performance vs. space trade-off using two-chip architecture

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Phase-Isolated DAQ Reference Design for Simultaneous Capture of Voltage and Current TIDA-01472

Используемые компоненты

Производитель: Texas Instruments
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