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ATLAS TRT R. Van Berg, Sept. 2, 20041 ASDBLR & DTMROC Testing Production Run Completion Rick Van Berg for Gabe Hare, Mike Reilly.

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Presentation on theme: "ATLAS TRT R. Van Berg, Sept. 2, 20041 ASDBLR & DTMROC Testing Production Run Completion Rick Van Berg for Gabe Hare, Mike Reilly."— Presentation transcript:

1 ATLAS TRT R. Van Berg, Sept. 2, 20041 ASDBLR & DTMROC Testing Production Run Completion Rick Van Berg for Gabe Hare, Mike Reilly

2 ATLAS TRT R. Van Berg, Sept. 2, 20042 DTMROC Tests Analog (PMU): –I DD –DAC outputs –Sense inputs (Temp/Voltage) –Test pulse outputs Digital: –Complete Verilog test suite from Vladimir Analog and Digital tests have been integrated

3 ATLAS TRT R. Van Berg, Sept. 2, 20043 DTMROC Status Production Testing Completed 8/25/04 –Production Test cuts very stringent –Will want to rerun after sorting to pick up additional good chips Expect about 30+% of “Bad” chips to pass on a second pass Sorting Files Assembled –Sort as needed or as possible

4 ATLAS TRT R. Van Berg, Sept. 2, 20044 DTMROC Status II 36,338 Chips Tested. 24,912 Passed 12,731 Failed 66% Pass Rate –Will add at least 10% with a second pass –Need to test some remaining pre-prod chips TRT Requires about 33k (with PP etc.) –May want to package a few more wafers

5 ATLAS TRT R. Van Berg, Sept. 2, 20045 DTM Loss Statistics Total Tested35,753 Total Passed24,912 Failed Digital7,537 Failed TP Amp60 Failed TP Delay4,331 Failed Sense488

6 ATLAS TRT R. Van Berg, Sept. 2, 20046 ASDBLR Testing Status 139,058 ASDBLR have been tested. –Includes LHCb wafers (~20% of total) –TRT owns about 59k ”good” chips after DC and parametric cuts. –Retesting of ”bad” chips should yield some additional (small) gain TRT Requirement (A/B/C/Barrel + ~20% spares) is 64k chips

7 ATLAS TRT R. Van Berg, Sept. 2, 20047 ASDBLR Tests Analog (PMU): –Power Supplies I CC, I EE –A/B Input Voltages & Resistances –Tracking, Transition Threshold I/V –Data Output Switching (I A, I B in On & Off States) Parametric: –50% Efficiency Thresholds Tracking at: 0 fC, 3 fC, 5 fC Transition at: 30 fC, 50 fC

8 ATLAS TRT R. Van Berg, Sept. 2, 20048 Input Resistance Cuts 4,273 had at least one input outside of the input Resistance limits of 10,000 – 50,000 Ohms 26 44 Nominal = 38 kOhms

9 ATLAS TRT R. Van Berg, Sept. 2, 20049 Power Supply Cuts 10,744 were outside of the P power supply current limits of 0.064 - 0.076 9,480 were outside of the N power supply current limits of -0.076 - -0.064 8,881 failed BOTH P power supply and N power supply

10 ATLAS TRT R. Van Berg, Sept. 2, 200410 Input Diode Cuts 9,898 had at least one input outside of the input Diode voltage limits of 0.5 - 1.05 V 0.7250.825

11 ATLAS TRT R. Van Berg, Sept. 2, 200411 Ternary Output Drive Current

12 ATLAS TRT R. Van Berg, Sept. 2, 200412 Sequential Losses Preliminary Tests 4,273 : Of All Chips Failed Input Resistance Tests 10,406 : Remaining Chips Failed Power Supply Tests 519 : Remaining Chips Failed Input Diode Voltage Tests 1,300 : Remaining Chips Failed Threshold Current Tests 838 : Remaining Chips Failed Output Current Sum Tests 11,760 : Remaining Chips Failed Output Switching Tests 19,684 : Remaining Chips Failed Half Efficiency Point Search

13 ATLAS TRT R. Van Berg, Sept. 2, 200413 Preliminary Test Co-Variances 0 : any Input Resistor and P power supply 2382 : any Input Resistor and N power supply 572 : any Input Resistor and BLR of power supply 3115 : any Input Resistor and any Input Diode 1106 : any Input Resistor and any Threshold 1074 : any Input Resistor and any Output Sum 1386 : any Input Resistor and any Comparator Switching 3126 : any Input Resistor and any Half Efficiency Point Search 8881 : P power supply and N power supply 6820 : P power supply and BLR of power supply 7322 : P power supply and any Input Diode 7586 : P power supply and any Threshold 7295 : P power supply and any Output Sum 8398 : P power supply and any Comparator Switching 9593 : P power supply and any Half Efficiency Point Search 6893 : N power supply and BLR of power supply 7220 : N power supply and any Input Diode 7560 : N power supply and any Threshold 7679 : N power supply and any Output Sum 8493 : N power supply and any Comparator Switching 9348 : N power supply and any Half Efficiency Point Search 6099 : BLR of power supply and any Input Diode 6420 : BLR of power supply and any Threshold 6278 : BLR of power supply and any Output Sum 6876 : BLR of power supply and any Comparator Switching 7162 : BLR of power supply and any Half Efficiency Point Search 6799 : Any input Diode and any Threshold 6517 : Any input Diode and any Output Sum 7324 : Any input Diode and any Comparator Switching 9549 : Any input Diode and any Half Efficiency Point Search 7145 : Any Threshold and any Output Sum 7849 : Any Threshold and any Comparator Switching 8441 : Any Threshold and any Half Efficiency Point Search 8233 : Any Output Sum and any Comparator Switching 8795 : Any Output Sum and any Half Efficiency Point Search 21205 : Any Comparator Switching and any Half Efficiency Point Search

14 ATLAS TRT R. Van Berg, Sept. 2, 200414 Zero Injected Charge

15 ATLAS TRT R. Van Berg, Sept. 2, 200415 ~ 5 fC Injected Charge

16 ATLAS TRT R. Van Berg, Sept. 2, 200416 Found Half Efficiency Points

17 ATLAS TRT R. Van Berg, Sept. 2, 200417 Zero Charge Deviations – Worst Channel from Average

18 ATLAS TRT R. Van Berg, Sept. 2, 200418 ~5 fC Deviations

19 ATLAS TRT R. Van Berg, Sept. 2, 200419 5 fC Channel Offsets

20 ATLAS TRT R. Van Berg, Sept. 2, 200420 5 fC Matching After Prelim Cuts +0.050 V -0.140 V

21 ATLAS TRT R. Van Berg, Sept. 2, 200421 ~30 fC Matching After Prelim Cuts +/- 0.050 V

22 ATLAS TRT R. Van Berg, Sept. 2, 200422 ASDBLR Summary 139,000 chips tested About 59,000, 53 % pass all cuts –Except – No tests for shorted test capacitors (see Mitch’s talk) –Maybe a few percent more good chips remaining in “bad” group (tester errors) Enough for A / B / C / Barrel plus 10% spare boards – NO SPARE REPLACEMENT CHIPS

23 ATLAS TRT R. Van Berg, Sept. 2, 200423 S(M)ummary II Need to understand / test / etc. shorted test capacitor effect Need to develop bad chip replacement strategy for board repairs Need to sort and pack up chips (still work for the Exatron and it’s friends)


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