Valencia SCT
IFIC

VAL K3-165 Module. Fan-ins on link1 replaced

Both fan-ins in LINK1 has been replaced to solve the shortcircuits we had bue to bonding problems. Unfortunately in the rebonding process, the bond head went down without control. The tool crashed against one fan-in making a crater, and the clamp destroyed the master chip on link1. We don't know if it was a stop switch malfunctioning or a bug in the bonder microcode.

After cleaning the area, unbond the master chip, change the bonder tool and check the machine, we succeeded in bonding the other chips in link1.


Setup

No optical readout is used, we use the electrical lines.


Parameters

Trimming
No trimming was done because lack of time. We used the same trimming we got for the hybrid.
Results
Noise is incresing towards chip M0 and E13 on both sides. We don't know if this is due to the bond tool crash or something else in the test setup. We didn't have time to check the results since the module in on the way to KEK.

Chip M0S1S2 S3S4E5Front
Gain(mV/fC)44.546.147.350.550.9--47.9
ENC(@1fC)(e-)24162112189217661795--1996
ENC(@2fC)(e-)24112192197218291832--2047
Chip M8S9S10 S11S12E13Back
Gain(mV/fC) --50.352.049.746.848.649.5
ENC(@1fC)(e-)--191617031829207324021985
ENC(@2fC)(e-)--190718111897226024082057

Plots:


VAL K3-165 Module. Fan-ins on link1 replaced
Last Updated November 26, 2000.
(silicio@ific.uv.es)
© IFIC 2000