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Electrical Requirements

mPGA604 Socket Design Guidelines 25

Figure 4-4. Inductance Measurement Fixture Cross-Section

No Plane on this Layer

Full Plane on this Layer

Socket

Interposer

Motherboard

40 mils

Probing Pads Surface

No Features or Plane

on this Layer

Interposer Pin

Short all L pins (using a solid plane)

Interposer Shoulder

Interposer

Short all L pins (using a solid plane)

Motherboard

No Features or

Plane on this Layer

Figure 4-5. Inductance and Capacitance Fixture

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.

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Intel mPGA604 Manuale Utente Pagina 25