SBAA525A september   2021  – may 2023 AFE7900 , AFE7901 , AFE7903 , AFE7920 , AFE7950 , AFE7950-SP , AFE7951 , AFE7953 , AFE7955 , AFE7958

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Highlighted Products
    2. 1.2 Device Loopback Modes
      1. 1.2.1 ADC to DAC JESD Loopback
      2. 1.2.2 ADC to DAC Low Latency Loopback
  5. 2Tests and Results
    1. 2.1 Test Methodology
      1. 2.1.1 Hardware Setup
        1. 2.1.1.1 ADC to DAC JESD Loopback
        2. 2.1.1.2 ADC to DAC Low Latency Loopback
      2. 2.1.2 GUI Setup
        1. 2.1.2.1 ADC to DAC JESD Loopback
        2. 2.1.2.2 ADC to DAC Low Latency Loopback
      3. 2.1.3 Test Conditions
      4. 2.1.4 Test Results
        1. 2.1.4.1 ADC to DAC JESD Loopback
          1. 2.1.4.1.1 JESD 122.88 MSPS
          2. 2.1.4.1.2 JESD 184.32 MSPS
          3. 2.1.4.1.3 JESD 245.76 MSPS
          4. 2.1.4.1.4 JESD 368.64 MSPS
          5. 2.1.4.1.5 JESD 491.52 MSPS
        2. 2.1.4.2 ADC to DAC Low Latency Loopback
  6. 3Conclusion
  7. 4References
  8. 5Revision History
2.1.4.1.5 JESD 491.52 MSPS

Internal JESD is set for 491.52-MSPS data rate to achieve 450-MHz signal bandwidth. Magnitude response has no ripple in pass band and group delay measures to 650 ns without any ripple linear phase response of device.

GUID-20210805-CA0I-HVWL-FFTZ-4KKFSD972VVK-low.pngFigure 2-12 Magnitude Response 491.52 MSPS
GUID-20210805-CA0I-DKCT-SWB9-WQX8ZZRQZHPC-low.pngFigure 2-13 Group Delay 491.52 MSPS