Cost and Space Optimized, Channel Isolated(Reinforced) AC/DC Voltage, Current DAQ Reference Design

1 января 2018

This reference design highlights an architecture that is optimized for size and cost for achieving channel to channel isolation when measuring AC/DC voltage and current signals. Accuracy of ±0.3% is achieved using an ultra low power (<1mW @ 1MSPS) 12-bit ADC and an ARM core MCU. Space savings and component count reduction is achieved using a digital isolator with integrated power converter that isolates channels and ADC and MCU.

Особенности

Channel to channel isolation using digital isolator with integrated power converter (ISOW7841) AC/DC voltage and current measurement accuracy AC Voltage: < ±0.25% for 5V-300V AC Current: < ±0.3% for 0.5A-50A Ultra low power (<1mW) data acquisition using ADS7043/ADS7044 and TLVx316 Space savings achieved using REF1930 (integrated REF, REF/2) and ISOW7841 (integrated digital isolator, power converter) Low power consumption and simplified multi-SPI interface achieved using MSP432P401R, an ARM® Cortex®-M4F based MCU