SBAA635 July   2024 AFE7900 , AFE7901 , AFE7903 , AFE7950 , AFE7950-SP , AFE7951 , AFE7953 , AFE7954 , AFE7955 , AFE7958

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2AFE79XX TX Architecture
  6. 3Numerically Controlled Oscillator
  7. 4Configuring the AFE79XX for Multi-Band Jamming
    1. 4.1 Overview of Configurability
    2. 4.2 Jamming Related Latte Functions and Parameters
    3. 4.3 Results
  8. 5Summary
  9. 6References

2 AFE79XX TX Architecture

The AFE79XX integrates 4 transmitters based on RF sampling DACs. Figure 2-1 shows the TX chain block diagram for a single DUC. The DAC output can operate at up to 12GSPS and is followed by a TX DSA (Digital Step Attenuator). The digital section of the TX includes dual or single DUCs to increase the input sample rate to the DAC sample rate. The digital block also includes gain control and a PA protection block.

TX Chain Block Diagram with Single DUC Figure 2-1 TX Chain Block Diagram with Single DUC