Test chip "top5" for GLAST TKR front-end electronics

• 3 power lines: AVDD (2.5 V), AVDD2 (1.5 V), and DVDD (2.5 V).
• 3 channels of a preamp, a shaper, and a comparator for TKR powered by AVDD and AVDD2.
• 1 preamp for CAL powered by AVDD and AVDD2
• A 128-bit shit register powered by DVDD; 4 blocks of 32-bit registers, each of which is designed differently: 3 SEU-resistive registers and a non-resistive one. (Schematic drawing of a shift-register on "top5")

Test Setup

• Test chip "top5" on LizBoard3:
  
  • photo of the board and chip layout
  • board layout and dimensions
• Interface board
• Power supply (2.5 V, 1.5 V, 3.3 V, 5.0 V)
• Logic analysis system HP16500A (or equivalent)
• A PC to control a logic analysis system

Test Plan and Brief Summary of Results

• Laser test at NRL (June 28, 2001)
• Find SEU threshold in laser power for each design of a shift-register.
• Find SEL threshold in laser power for each design of a shift-register.
• LabVIEW VI's: This ZIPped file (224 kB) includes a main VI "see2001_nrl.vi" (640 kB), and two sub VI's "open_logfile.vi" (59 kB) and "decode_pod1.vi" (35 kB). Put all three in one directory and open "see2001_nrl.vi" to use it. Worked on LabVIEW 5.1.
• LabVIEW instrument drivers (ZIPped; 4.25 MB) used by the VI's above.
• Summary of the SEU study with the laser beam at NRL.
• Heavy-ion beam tests at INFN (July 21-22, 2001)
• Find SEU threshold in LET for the entire shift-register.
• Find SEL threshold in LET for the entire chip.
• Configuration and test procedure
• Detailed test plan and related materials
• LabVIEW VI's: This ZIPped file (280 kB) includes a main VI "see2001_lnl.vi" (682 kB), and four sub VI's "open_logfile.vi" (59 kB), "decode_pod1.vi" (35 kB), "check_counter.vi" (40 kB), and "fill_histogram.vi" (26 kB). Put all three in one directory and open "see2001_lnl.vi" to use it. Worked on LabVIEW 5.1.
• LabVIEW instrument drivers (ZIPped; 4.25 MB) used by the VI's above.
• Calibrate laser-test results with heavy-ion results.
• SEL/SEU threshold differences among the 4 designs.

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Last modified: Wed Jul 18 14:58:35 PDT 2001