PCB Checklist
Reading time : 2 minutes
Published on 18 Jun 2020 - Updated on 05 Dec 2020
| Document | Category | Item |
|---|---|---|
| Layout | Connector | Pin#1 is indicated on silkscreen for each connector |
| Layout | Connector | Connector name is written on silkscreen |
| Layout | General | PCB revision shall be indicated on silkscreen |
| Layout | General | PCB reference shall be indicated on silkscreen |
| Layout | General | Component footprint pinout is correct versus manufacturer datasheet |
| Layout | General | Component footprint size is correct versus manufacturer datasheet |
| Layout | General | There is no big split in Gnd plane (max 3 vias) |
| Layout | Power | Decoupling capacitors are routed with short traces |
| Layout | Power | There is one decoupling capacitors per power pin/ball |
| Layout | Power | There is a 22uf capacitor every suare inch per power plane |
| Layout | Power | There is one bulk capacitor every square inch per power plane |
| Layout | Power | Power planes are as large as possible |
| Layout | Power | Analog Power planes are as large as possible |
| Layout | Power | There is enough vias for power to go trough plane |
| Layout | Power | Regulators feedback loop are as short as possible |
| Layout | Power | Traces with power are large enough |
| Layout | Power | Regulator capacitor are as close as possible to the chip |
| Layout | Power | Switching converters have a local gnd plane connected to board plane at one point |
| Layout | Clock | Crystal are as close as possible to the device |
| Layout | Clock | Crystal trace width is at least 12 mils |
| Layout | Clock | There is a ground ring around crystals |
| Layout | Analog | Check that calibration resistor is connected with short trace (<0.7inch) |
| Layout | Differential pair | There is a plane void under serial capacitors |
| Layout | Differential pair | If reference plane change, there are bypass capacitors |
| Layout | Differential pair | Check pair length |
| Layout | Differential pair | Check pair skew |
| Layout | Differential pair | Check signal impedance |
| Layout | Differential pair | Serial capacitors are placed at the end of TX line or close to connector |