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R
Electrical Requirements
Figure 4-4. Inductance Measurement Fixture Cross-Section
Probing Pads Surface
40 mils
Interposer
No Features or Plane
on this Layer
Socket
Interposer Pin
No Plane on this Layer
Motherboard
Full Plane on this Layer
Short all L pins (using a solid plane)
No Features or
Plane on this Layer
Interposer
Interposer Shoulder
Short all L pins (using a solid plane)
Motherboard
Figure 4-5. Inductance and Capacitance Fixture
A
B
1
4
5
AC
AD
8
2
3
6
7
1 2
29 30
4.3.1 Design Procedure for Inductance Measurements
The measurement equipment required to perform the validation is:
1.
Equipment - HP8753D Vector Network Analyzer or equivalent.
2.
Robust Probe Station (GTL4040) or equivalent.
3.
Probes - GS1250 & GSG1250 Air-Co-Planar or equivalent.
mPGA604 Socket Design Guidelines
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