CARDIAC production tests G. Auriemma, M. Martino & C. Satriano.
FE boards test & production G. Auriemma, D. Fidanza & C. Satriano.
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Transcript of FE boards test & production G. Auriemma, D. Fidanza & C. Satriano.
FE boards test & production
G. Auriemma, D. Fidanza & C. Satriano
Muon Meeting 06/04/2004 CERN
G. Auriemma 2
Summary
• Requirements• Automatic chip testing• Test capabilities in Potenza• How can it be increased• A duplicate system• SPB production
Muon Meeting 06/04/2004 CERN
G. Auriemma 3
Schedule7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2
NRE productionNRE packagingNRE validation
Production runCARIOCA testsDIALOG testsSYNC tests
FE boards productionFE boards assemblingFE boards testsChamber assemblingFE IC packagingSYNC packaging
30k IC packaged
2004 2005 2006
Boundary assumptions:
• No MPW, but more time allowed for NRE preparation: NRE submission scheduled date is 30 th June 04 (start 15th July) • Chips’ turnarounds: we assume 3 months for NRE Run and 5 months for Prod. Run (could happen to be less)• Test rate for CARIOCA: ~ 2k chips/month for NRE (or less), ~ 4k chips/month for production (mandatory)• Test rate for DIALOG: ~ 1k chips/month for NRE (or less), ~ 2k chips/month for production (mandatory)• Test rate for SYNC: ~ 800 chips/month (allowed to be less)• Test rate for FE boards: the same as DIALOG rate (half the CARIOCA rate)• Deliveries from the various production stages are organized in bunches. • If the NRE Run fails, we loose ~ 5 months (depends on the entity of the problem)
5k SYNC pack’d
LabCompany
Min Max
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Requirements
• Test rate for chips: 800/week from 15/6/05 to
15/11/05• Test rate for boards: 400/week from 15/7/05-15/12/05
Chip testing
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Chip test protocol (mostly Werner’s comments)
• The system with counters and injectors that allows the measure of sensitivity and offset variations is already there (Rio-FEET)
• The question that still has to be settled is whether the injector rise time of about 10ns is good enough for our purposes.
• Since pulse-width is a very crucial number for the system performance we need a TDC measurement. The discriminator output pulsewidth for 1 or 2 injected charge is therefore a crucial test parameter.
New injector (Potenza)
a TDC in the chain (Rio)
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Goal of the chip test• First goal is obviously to reject bad chips • It seems not really necessary to
calibrate each chip and write the calibration data to a database.
• We can decide to select chips according to a quality classification.
• The rejection level will be decided after measuring the first 100 or 200 chips from the production run.
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Manual/automatic chip handling
• 800 chips/week -> STD (INFN) week -> 2m10s/chip• ZIF sockets have a limited
operational life 5,000-10,000 insertions (?)• CMOS technology is sensitive to
statics
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Gravity feed handler
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55 (w) x 50 (d) x 50(h) cm313 kg
Do we need an hot/cold test ?
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Capabilities• For testing 500 to 5,000 devices a week • Handles most electronic devices shipped in tubes
(DIP, SIP, SOIC, SSOIC, PLCC, LCC, QFN, MLF, XTALS & Custom Conventional and Plunge-to-Board RF contacts )
• 2 tube manual input • 8 tube output with any combination sorts • Table top operation; • Micro terminal for current status, set up and
diagnostics
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Contacts
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• Contact pressure 10 to 12 grams / contact
• Contact height under 0.001” • -70° C to +200° C temperature range • Long life: over 1,000,000 contacts on
rigid material;• No wiping action required • Same electrical characteristics as a
solder connection:• Contact resistance under 3 milliOhms • Negligible capacity• Negligible inductance• Tested to 40 GHz
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Build the new injector card using a template custom
card
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G. Auriemma 15
Boards testing
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Goal of the board test• Verify assembly:
– spot systematic errors with a fast feedback to the production
– spot random errors (bad soldering etc.)
• Spot chips dead after tests• Calibrate gains, offsets and pulse
width (?) • Create a data base (!)
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Test standPulserDAC
32 ch VME scalers
LabViewsoftware
The test bench in Potenza
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The injector card
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• The test system in Potenza has been modified with the insertion of a Service Board for the control of the DIALOG
• A new LabView code has been written, suitable for testing CARDIAC
• Main modification is scanning in injected charge at constant threshold, because DIALOG DAC has 10 mV resolution
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Service Board in the chain
Provided by Rome I
To be done
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Raw data (S-curve)
0
20
40
60
80
100
120
5,5
7,5
9,5
11,5
13,5
15,5
17,5
19,5
21,5
23,5
25,5
27,5
29,5
31,5
33,5
ch. 0
ch. 1
ch. 2
ch. 3
ch. 4
ch.5
ch. 6
ch. 7
Injected charge (fC)
Nco
un
ts/N
ref
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Method
-20
0
20
40
60
80
100
120
22,5 27,5 32,5
Serie1
90%
10%
Q
Vth
K N
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Capabilities• With the present system (1 board/test
cycle) 20 boards in a day can be tested• Expanding to a system with 4 boards we
think we can go up to 80 boards in a day (not every day).
• How many boards/week ?• With present manpower we estimate
160-200• With one more operator perhaps 300-400
(marginally sufficient)• Would be safer to duplicate the system
with a cheaper solution
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SPB production• Layout ok• 120 PCB pre-series from CMT• 10 SPB in production• 120 could be ready next month• After a first check we have decided to buy
directly the components• Some bids already got -> purchase will be
done soon • Goal: all components in our hand before
June. (about 25,000 euros)
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• PCB will be also ordered (bids asked) we estimate 25,000 euros
• Assembly can be contracted likely starting from July with additional funding
• Possible to have 50% in 2004 and the rest before June 2005 if funds are requested now