The 16-lead QFN evaluation board is implemented in four layers with split (dual) power supplies (Figure 2, Evaluation Board Lay-up). For standard lab setup, a split (dual) power supply is essential to enable the 50 W internal impedance in the oscilloscope as a device termination. The first layer or primary trace layer is 0.005, thick Rogers RO6002 material, which is designed to have equal electrical length on all signal traces from the device under the test (DUT) to the sense output. The second layer is the 1.0 oz. copper ground plane. The FR4 dielectric material is placed between the second and third layer, and between the third and fourth layer. The third layer is also a 1.0 oz copper ground plane. The fourth layer is the secondary trace layer.