SBAA525A september   2021  – may 2023 AFE7900 , AFE7920 , AFE7950

 

  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

3 Conclusion

AFE79xx Direct RF sampling architecture with internal low latency (1.5 us) JESD loopback and high bandwidth 50-ns latency enables use of device as single chip design in loopback application.

Flat Pass band magnitude response of device enables system design to operate without additional gain stage. Ripple free pass band also indicates in-band spurious free leakage of device.

With emerging 5G NR wireless interface and need of long-range high bandwidth coverage, AFE79xx is a low-cost single chip design to design low latency, high bandwidth repeater products.