SBOK102 July   2025 INA1H94-SP

 

  1.   1
  2.   2
  3.   Trademarks
  4. 1Overview
  5. 2SEE Mechanisms
  6. 3Irradiation Facilities and Telemetry
  7. 4Test Device and Test Board Information
    1. 4.1 Qualification Circuits and Boards
    2. 4.2 Characterization Devices and Test Board Schematics
  8. 5Results
    1. 5.1 SEL Qualification Results
    2. 5.2 SET Characterization Results: MSU FRIB Linac
    3. 5.3 Analysis
    4. 5.4 Weibull Fit
  9. 6Summary
  10.   A MSU Results Appendix
  11.   B Confidence Interval Calculations
  12.   C References

4.1 Qualification Circuits and Boards

The INA1H94-SP was biased in a variety of different conditions for SEE testing, at both the recommended minimum and recommended maximum supply voltages. Midsupply or GND was used for both REFA and REFB. Current was monitored over time for both V+ and V-.

INA1H94-SP SEE Qualification Bias Diagram Figure 4-2 INA1H94-SP SEE Qualification Bias Diagram
Input and supply voltages were provided by SMU PXI cards, connected with banana cables. The board used for testing incorporated jumpers to allow testing with high VCM and 0V VDIFF; low VCM and high VDIFF; and high VCM and constant VDIFF. For all testing, the device outputs were monitored using oscilloscope PXI cards, connected with BNC cables. 100Ω of series isolation resistance was used on each output channel to drive the cable capacitance. A 2kΩ output load to midsupply was present for all DUTs.

An example of three decapped units mounted on a characterization board is shown in Figure 4-3. Note that for SET testing, devices were powered in parallel and the test facility "stage" or backplane was moved between runs to target different DUTs. For SEL testing, only one device was connected at a time.

Characterization BoardFigure 4-3 Characterization Board

Additional correlation testing was performed on three units, each mounted on a simplified coupon board, using the device absolute maximum supply voltage (24V). Devices were exposed to a total fluence of 5 × 107 ions / cm2 (60krad of accumulated HDR TID), 2 × 107 ions / cm2 (24krad of accumulated HDR TID), and 1 × 107 ions / cm2 (12krad of accumulated HDR TID) respectively without any failures observed. This suggests the device has significant margin at the device recommended maximum operating voltage of 18V.