Ironwood Electronics Kelvin testing using GHz socket User Manual
Page 5
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1:3
0.0112 1:21.
0.0483 1:39
0.0844 1:57
0.026
1:4
2.3584 1:22
2.409 1:40
2.418 1:58
2.3544
1:5
0.0155 1:23
0.0512 1:41
0.0865 1:59
0.023
1:6
2.3672 1:24
2.4156 1:42
2.4094 1:60
2.3637
1:7
0.0211 1:25
0.0555 1:43
0.0913 1:61
0.019
1:8
2.3754 1:26
2.4228 1:44
2.434 1:62
2.3701
1:9
0.0246 1:27
0.0601 1:45
0.0954 1:63
0.0163
1:10
2.3853 1:28
2.4308 1:46
2.4269 1:64
2.3753
1:11
0.0294 1:29
0.0643 1:47
0.1055
1:12
2.3943 1:30
2.4381 1:48
2.4349
1:13
0.0331 1:31
0.0686 1:49
0.045
1:14
2.3984 1:32
2.4463 1:50
2.3341
1:15
0.0365 1:33
0.0712 1:51
0.0407
1:16
2.3944 1:34
2.3822 1:52
2.3402
1:17
0.0388 1:35
0.0752 1:53
0.0351
1:18
2.3933 1:36
2.3917 1:54
2.3457
1:19
0.0444 1:37
0.0812 1:55
0.0305
Conclusion: From the results in Figure 5, one can ascertain that using the GHz socket in
the described setup can in fact measure the Kelvin resistance between two points. The
test chip that was daisy chained in this pattern allowed us to see differences between
points because of the length of the trace (more length = more resistance), you can see that
the farther you got away from the first pin, the resistance increases slightly. It was used
expressly for that purpose; a typical MLF chip will also work in this application although
the results will be unique to that chip.