ACPL-7970 Optically Isolated Sigma-Delta Modulator
Product Announcement from Avago Technologies
As the 7970 utilizes advanced sigma-delta A/D converter technology, designers can be sure that they are measuring the most accurate current from different phases of the motor. In addition to high accuracy, the 7970 also offers improved SNR/SNDR performance compared to the HCPL-7860/786J series. Other improvements include extended temperature range, 3.3V-comptible outputs and a slew rate control which helps mitigate EMI issues. In addition, using the optical method of transferring information ensures high CMR capability, which provides precision and stability needed to accurately monitor motor current in noisy motor control environments.