Daily Archives: August 2, 2018

Grounding For High Frequency PCB Board Cloning

The “ground plane” layer obtained from High Frequency PCB Board Cloning is often advocated as the best return for power and signal currents, while providing a reference node for converters, references, and other subcircuits. However, even extensive use of a ground plane does not ensure a high quality ground reference for an ac circuit. The simple…

DSP Application in Printed Circuit Board Reverse Engineering

As if dealing with mixed-signal ICs with AGND and DGNDs wasn’t enough in the process of Printed Circuit Board Reverse Engineering, DSPs such as the ADSP-21160 SHARC with internal phase-locked-loops (PLLs) raise issues with respect to proper grounding. The ADSP-21160 PLL allows the internal core clock (determines the instruction cycle time) to operate at a…