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Download Report on Production testing September 04
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ATLAS TRT ASDBLR & DTMROC Testing Production Run Completion Rick Van Berg for Gabe Hare, Mike Reilly R. Van Berg, Sept. 2, 2004 1 ATLAS TRT DTMROC Tests • Analog (PMU): – – – – IDD DAC outputs Sense inputs (Temp/Voltage) Test pulse outputs • Digital: – Complete Verilog test suite from Vladimir • Analog and Digital tests have been integrated R. Van Berg, Sept. 2, 2004 2 ATLAS TRT 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 R. Van Berg, Sept. 2, 2004 3 ATLAS TRT 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 R. Van Berg, Sept. 2, 2004 4 ATLAS TRT DTM Loss Statistics Total Tested 35,753 Total Passed 24,912 Failed Digital Failed TP Amp Failed TP Delay Failed Sense R. Van Berg, Sept. 2, 2004 7,537 60 4,331 488 5 ATLAS TRT 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 R. Van Berg, Sept. 2, 2004 6 ATLAS TRT ASDBLR Tests • Analog (PMU): – – – – Power Supplies ICC, IEE A/B Input Voltages & Resistances Tracking, Transition Threshold I/V Data Output Switching (IA, IB in On & Off States) • Parametric: – 50% Efficiency Thresholds • Tracking at: 0 fC, 3 fC, 5 fC • Transition at: 30 fC, 50 fC R. Van Berg, Sept. 2, 2004 7 ATLAS TRT Input Resistance Cuts 4,273 had at least one input outside of the input Resistance limits of 10,000 – 50,000 Ohms Nominal = 38 kOhms 26 R. Van Berg, Sept. 2, 2004 44 8 ATLAS TRT 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 R. Van Berg, Sept. 2, 2004 9 ATLAS TRT Input Diode Cuts 9,898 had at least one input outside of the input Diode voltage limits of 0.5 - 1.05 V 0.725 0.825R. Van Berg, Sept. 2, 2004 10 ATLAS TRT Ternary Output Drive Current R. Van Berg, Sept. 2, 2004 11 ATLAS TRT 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 R. Van Berg, Sept. 2, 2004 12 ATLAS TRT 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 R. Van Berg, Sept. 2, 2004 13 ATLAS TRT Zero Injected Charge R. Van Berg, Sept. 2, 2004 14 ATLAS TRT ~ 5 fC Injected Charge R. Van Berg, Sept. 2, 2004 15 ATLAS TRT Found Half Efficiency Points R. Van Berg, Sept. 2, 2004 16 ATLAS TRT Zero Charge Deviations – Worst Channel from Average R. Van Berg, Sept. 2, 2004 17 ATLAS TRT ~5 fC Deviations R. Van Berg, Sept. 2, 2004 18 ATLAS TRT 5 fC Channel Offsets R. Van Berg, Sept. 2, 2004 19 ATLAS TRT 5 fC Matching After Prelim Cuts -0.140 V +0.050 V R. Van Berg, Sept. 2, 2004 20 ATLAS TRT ~30 fC Matching After Prelim Cuts +/- 0.050 V R. Van Berg, Sept. 2, 2004 21 ATLAS TRT 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 R. Van Berg, Sept. 2, 2004 22 ATLAS TRT 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) R. Van Berg, Sept. 2, 2004 23