UG-865

ADA4530-1R-EBZ User Guide

Rev. 0 | Page 4 of 14

BOARD LAYERS STACKUP

Figure 4. Board Layer Stackup

The ADA4530-1R-EBZ is a 4-layer evaluation board that uses

the Rogers 4350B, a high performance PCB laminate. A hybrid

stackup is required for mechanical strength. The top and bottom

layers are ceramic (Rogers 4350B) while the middle core layer is

a conventional glass epoxy laminate (FR-4). The Rogers 4350B

material provides superior insulation resistance in the presence

of humidity compared to glass/epoxy materials. It minimizes

current leakage and, therefore, increases signal integrity.

Additionally, the dielectric relaxation times of Rogers 4350B are

much shorter than glass/epoxy dielectrics. For more information

on dielectric relaxation, see the ADA4530-1 data sheet.