The target impedance of the VPP is calculated as 3.3 Ω, based on the values (see Power Supply):
- VSUPPLY = 3.3 V
- Itrans = 50 mA
Ripple = 5%
The simulation result (as shown in the following figure) shows that it meets the required impedance levels.
Figure 1. Impedance Profile of VPP Plane Over Frequency Range
