SBAA487 January   2021 ADS8664 , ADS8668 , ADS8674 , ADS8678 , ADS8684 , ADS8684A , ADS8686S , ADS8688 , ADS8688A , ADS8694 , ADS8698

 

  1.   Trademarks
  2. 1Introduction
  3. 2Phase Delay and Non-Simultaneous Sampling
  4. 3Averaging with Sequencer and Burst Sequencer mode
    1. 3.1 Averaging with Sequencer
    2. 3.2 Averaging with Burst Sequencer
  5. 4Verification and Measured Result
    1. 4.1 Phase Delay Measurement
      1. 4.1.1 Measured Phase Delay without Averaging – 50Hz Sinusoidal Fundamental Signal
      2. 4.1.2 Measured Phase Delay with Averaging – 50Hz sinusoidal fundamental signal
      3. 4.1.3 Comparison
    2. 4.2 AC Performance
  6. 5Summary
  7. 6References

5 Summary

By using the simple averaging technique introduced in this article, the phase delay between channel-to-channel due to channel switching on the multiplexed ADC, ADS8686S, can be significantly reduced. Therefore, the ADS8686S ADC can achieve specified performance like a simultaneous sampling ADC with minimal impact on phase measurement, and is applied in most power protection systems in grid infrastructure application.