SBOK052 May   2024 OPA4H014-SEP

 

  1.   1
  2.   OPA4H014-SEP Single-Event Latch-Up (SEL) Radiation Report
  3.   Trademarks
  4. 1Overview
  5. 2SEE Mechanisms
  6. 3Irradiation Facilities and Telemetry
  7. 4Test Device and Test Board Information
    1. 4.1 Qualification Devices and Test Board
    2. 4.2 Characterization Devices and Test Boards
  8. 5Results
    1. 5.1 SEL Qualification Results
    2. 5.2 SET Characterization Results: TAMU K500 Cyclotron
    3. 5.3 SEE Characterization Results: MSU FRIB Linac
    4. 5.4 Analysis
    5. 5.5 Weibull Fit
  9. 6Summary
  10.   A TAMU Results Appendix
  11.   B MSU Results Appendix
  12.   C Confidence Interval Calculations
  13.   D References

5.1 SEL Qualification Results

During SEL qualification, the device was heated using forced hot air, maintaining an IC temperature at 125°C. The temperature was monitored by means of a K-type thermocouple attached as close to the device as possible. The species used for the SEL testing was a silver (47Ag) ion with an angle-of-incidence of 0° for an LETEFF = 43MeV-cm2/mg. The kinetic energy in the vacuum for this ion is 1.634 GeV (15MeV/amu line). A flux of approximately 105 ions / cm2-s and a fluence of approximately 107 ions were used for two runs. The V+/V-supply voltage was supplied at the recommended maximum voltage setting of +/- 9V. Run duration to achieve this fluence was approximately two minutes. No SEL events were observed during all four runs listed in Table 5-1. Figure 5-1 shows a plot of the current versus time.

Table 5-1 OPA4H014-SEP SEL Conditions Using47Ag at an Angle-of-Incidence of 0°
Run #Distance
(mm)		Temperature
(°C)		IonAngleFlux
(ions × cm2/mg)		Fluence
(Number ions)		LETEFF
(MeV × cm2/ mg)
6 40 125 Ag 0° 1.00E+05 1.00E+07 43
740125Ag0°1.00E+051.00E+0743

No SEL events were observed, which indicates that the OPA4H014-SEP is SEL-immune at LETEFF = 43MeV-cm2/ mg and T = 125°C. Using the MFTF method described in Appendix C and combining (or summing) the fluences of the two runs at 125°C (2 × 107), the upper-bound cross-section (using a 95% confidence level) is calculated in Equation 1:

Equation 1. σSEL ≤ 1.84 × 10–7 cm2 for LETEFF = 43MeV-cm2/ mg and T = 125°C.
Current vs Time (I vs t) Data for V+ Current During SEL Run 6 Figure 5-1 Current vs Time (I vs t) Data for V+ Current During SEL Run 6
Current vs Time (I vs t) Data for V- Current During SEL Run 6 Figure 5-2 Current vs Time (I vs t) Data for V- Current During SEL Run 6
Current vs Time (I vs t) Data for V+ Current During SEL Run 7 Figure 5-3 Current vs Time (I vs t) Data for V+ Current During SEL Run 7
Current vs Time (I vs t) Data for V- Current During SEL Run 7 Figure 5-4 Current vs Time (I vs t) Data for V- Current During SEL Run 7