SBAK020 April   2025 ADC3683-SEP

PRODUCTION DATA  

  1.   1
  2.   Single-Event Effects Test Report of the ADC3683-SEP dual 18-bit 65-MSPS ADC
  3.   Trademarks
  4. 1 Introduction
  5. 2 Single-Event Effects
  6. 3 Irradiation Facility and Setup
  7. 4 Depth, Range, and LETEFF Calculations
  8. 5 Test Setup and Procedures
  9. 6 Destructive Single-Event Effects (DSEE)
  10. 7 Single-Event Transients (SET)
  11. 8 Event Rate Calculations
  12. 9 Summary
  13. 10References

8 Event Rate Calculations

Event rates were calculated for LEO (ISS) and GEO environments by combining CREME96 orbital integral flux estimations and simplified SEE cross sections according to methods shown in Heavy Ion Orbital Environment Single-Event Effects Estimations.

For calculation purposes, an onset LET of 1MeV × cm2 / mg is used. The device was not tested at this LET but based on testing of similar products of the same process (C021), this as a conservative starting point. The onset can possibly be higher.

A minimum shielding configuration of 100mils (2.54mm) of aluminum, and worst-week solar activity (this is similar to a 99% upper bound for the environment) is assumed. Using the 95% upper-bounds for the SEL and SET, the event rates and Weibull plots for SETs are listed below.

Table 8-1 SET Event Rate Calculations of Total Events for Worst-Week LEO and GEO Orbits
Orbit Type Onset LETEFF (MeV-cm2/ mg) σSAT (cm2) Event Rate (/day) Event Rate (FIT) MTBE (Years)
LEO (ISS) 1 1.31 × 10–5 1.47 × 10–5 6.12 × 102 1.86 × 102
GEO 1.25 × 10–4 5.22 × 103 2.19 × 101
Table 8-2 SET Event Rate Calculations of Short Events for Worst-Week LEO and GEO Orbit
Orbit Type Onset LETEFF (MeV-cm2/mg) σSAT (cm2) Event Rate (/day)
LEO (ISS) 1 1.06 × 10–5 1.57 × 10–5 6.56 × 102 1.74 × 102
GEO 1.35 × 10–4 5.62 × 103 2.03 × 101
Table 8-3 SET Event Rate Calculations of Long Events for Worst-Week LEO and GEO Orbits
Orbit Type Onset LETEFF (MeV-cm2/mg) σSAT (cm2) Event Rate (/day) Event Rate (FIT) MTBE (Years)
LEO (ISS) 1 6.57 × 10–6 2.77 × 10–6 1.15 × 102 9.90 × 102
GEO 2.29 × 10–5 9.53 × 102 1.20 × 102
ADC3683-SEP Cross Section Plot for Total Events Figure 8-1 Cross Section Plot for Total Events
ADC3683-SEP Cross Section for Short Events Figure 8-2 Cross Section for Short Events
ADC3683-SEP Cross Section for Long Events Figure 8-3 Cross Section for Long Events