R. Van Berg, Sept. 2, 2004 1

ATLAS TRT

ASDBLR & DTMROC TestingProduction Run Completion

Rick Van Bergfor

Gabe Hare, Mike Reilly

R. Van Berg, Sept. 2, 2004 2

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 3

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 4

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 5

ATLAS TRT

DTM Loss Statistics

Total Tested 35,753

Total Passed 24,912

Failed Digital 7,537

Failed TP Amp 60

Failed TP Delay 4,331

Failed Sense 488

R. Van Berg, Sept. 2, 2004 6

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 7

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 8

ATLAS TRT

Input Resistance Cuts

4,273 had at least one input outside of the input Resistance limits of 10,000 – 50,000Ohms

26 44Nominal = 38 kOhms

R. Van Berg, Sept. 2, 2004 9

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 10

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 0.825

R. Van Berg, Sept. 2, 2004 11

ATLAS TRT

Ternary Output Drive Current

R. Van Berg, Sept. 2, 2004 12

ATLAS TRTSequential Losses Preliminary Tests

4,273 : Of All Chips Failed Input Resistance Tests10,406 : 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 Tests11,760 : Remaining Chips Failed Output Switching Tests19,684 : Remaining Chips Failed Half Efficiency Point Search

R. Van Berg, Sept. 2, 2004 13

ATLAS TRT

Preliminary Test Co-Variances 0 : any Input Resistor and P power supply2382 : any Input Resistor and N power supply572 : any Input Resistor and BLR of power supply3115 : any Input Resistor and any Input Diode1106 : any Input Resistor and any Threshold1074 : any Input Resistor and any Output Sum1386 : any Input Resistor and any Comparator Switching3126 : any Input Resistor and any Half Efficiency Point Search8881 : P power supply and N power supply6820 : P power supply and BLR of power supply7322 : P power supply and any Input Diode7586 : P power supply and any Threshold7295 : P power supply and any Output Sum8398 : P power supply and any Comparator Switching9593 : P power supply and any Half Efficiency Point Search6893 : N power supply and BLR of power supply7220 : N power supply and any Input Diode7560 : N power supply and any Threshold7679 : N power supply and any Output Sum8493 : N power supply and any Comparator Switching9348 : N power supply and any Half Efficiency Point Search

6099 : BLR of power supply and any Input Diode6420 : BLR of power supply and any Threshold6278 : BLR of power supply and any Output Sum6876 : BLR of power supply and any Comparator Switching7162 : BLR of power supply and any Half Efficiency Point Search6799 : Any input Diode and any Threshold6517 : Any input Diode and any Output Sum7324 : Any input Diode and any Comparator Switching9549 : Any input Diode and any Half Efficiency Point Search7145 : Any Threshold and any Output Sum7849 : Any Threshold and any Comparator Switching8441 : Any Threshold and any Half Efficiency Point Search8233 : Any Output Sum and any Comparator Switching8795 : Any Output Sum and any Half Efficiency Point Search21205 : Any Comparator Switching and any Half Efficiency Point Search

R. Van Berg, Sept. 2, 2004 14

ATLAS TRT

Zero Injected Charge

R. Van Berg, Sept. 2, 2004 15

ATLAS TRT

~ 5 fC Injected Charge

R. Van Berg, Sept. 2, 2004 16

ATLAS TRT

Found Half Efficiency Points

R. Van Berg, Sept. 2, 2004 17

ATLAS TRT

Zero Charge Deviations – Worst Channel from Average

R. Van Berg, Sept. 2, 2004 18

ATLAS TRT

~5 fC Deviations

R. Van Berg, Sept. 2, 2004 19

ATLAS TRT

5 fC Channel Offsets

R. Van Berg, Sept. 2, 2004 20

ATLAS TRT

5 fC Matching After Prelim Cuts

+0.050 V-0.140 V

R. Van Berg, Sept. 2, 2004 21

ATLAS TRT

~30 fC Matching After Prelim Cuts

+/- 0.050 V

R. Van Berg, Sept. 2, 2004 22

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 23

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)