SBAK043 April   2026 DAC39RF10-SP , DAC39RFS10-SP

 

  1.   1
  2.   2
  3.   Trademarks
  4. 1Introduction
  5. 2Single-Event Effects
  6. 3Device and Test Board Information
  7. 4Irradiation Facility and Setup
  8. 5Test Setup and Procedures
  9. 6Single-Event Latch-Up (SEL) Results
  10. 7Single-Event Functional Interrupt (SEFI) Results
    1. 7.1 Converter Performance and Digital (DUC + JESD204C Link) Hardness
    2. 7.2 Configuration Register Hardness
    3. 7.3 SPI Programming During Irradiation
  11. 8SEU Results
    1. 8.1 JESD204C Link Monitoring Results
    2. 8.2 Digital Up-Converter and NCO Upset Recovery
    3. 8.3 Estimating Upset Rates in Unprotected Data Paths
    4. 8.4 Event Rate Calculations
    5. 8.5 Summary of Radiation Hardness
  12. 9References
  13.   A Appendix: Recommendations for Hi-Rel Systems
    1.     A.1 Summary of Rad-Hard Design Features
    2.     A.2 SPI Programming
    3.     A.3 JESD204C Reliability
    4.     A.4 Equalizer Usage in Radiation Environments
    5.     A.5 NCO Reliability
    6.     A.6 NCO Frequency and Phase Correction (Strategy #1)
    7.     A.7 NCO Frequency Correction (Strategy #2)
    8.     A.8 NCO Self-Sync/Self-Coherent Mode (Strategy #3)

7.1 Converter Performance and Digital (DUC + JESD204C Link) Hardness

The DAC was configured in JMODE3 and a baseline FFT was captured on the spectrum monitoring software (HSDCPRO) showing four unique tones (all four NCOs have been programmed) and typical analog performance. During the beam run, the DAC output was monitored by taking repeated captures with the HSDCPRO software. No degradation was observed during or after the beam run. This result shows that the DAC39RF10-SP is not susceptible to SEFI that would permanently corrupt the DAC performance. This also demonstrates that the internal calibration and trim vectors and configuration registers are not corrupted by radiation.

DAC39RF10-SP Baseline (Beam-Off) Performance and 4x NCOs Set for SEFI Testing Figure 7-1 DAC39RF10-SP Baseline (Beam-Off) Performance and 4x NCOs Set for SEFI Testing
DAC39RF10-SP Performance Mid-Run Figure 7-2 DAC39RF10-SP Performance Mid-Run
Note: The DAC39RF10-SP performance mid-run shows all four NCOs have not wandered and analog performance matches the baseline. SerDes link also remains up.