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I'd like to know if the pcb layout is ok for the 2 op amps that i use.I'm interested in grounding and if the op-amps have proper layout(not too long loops or poor ground planes). source files The files are all in the zip archive. You can use the easyEDA to view the gerbers or EAGLE.I used Eagle 9.3.2.


closed as too broad by Kevin Reid, Leon Heller, Bimpelrekkie, RoyC, Lior Bilia Mar 12 at 9:55

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    \$\begingroup\$ In order to allow everybody to comment on the layout, please include images of the PCB. \$\endgroup\$ – Elmesito Mar 11 at 16:14
  • \$\begingroup\$ Shopping recommendation questions are off topic, your welcome to ask these questions in the chat. I think you could expand your original question and write a better question, be specific \$\endgroup\$ – Voltage Spike Mar 11 at 16:14
  • \$\begingroup\$ All the CAD data is in the zip file.I only need a final validation before sending for production(for me ,hobby) regarding grounding and other noise problems that arise from pcb layout. \$\endgroup\$ – Andrei112 Mar 11 at 16:29
  • \$\begingroup\$ What switching power supplies do you use? If any, how is their VDD noise filtered? What about electric-field interferers? what about MCUs on the same PCB? \$\endgroup\$ – analogsystemsrf Mar 11 at 16:36

Your power supply de-coupling is still very bad. The overall bypass is still closed with 4 vias in-series (RED marked by me):

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The manufacturer strongly suggests "star connection" for power bypass, and not using any ground planes around:

enter image description here

If you have the ground plane, the bypass traces should be connected to the plane at only ONE point (making it as a "star"). And (+) and (-) pads should have voids in the ground plane, to reduce parasitic capacitance to ground that might change feedback transfer function and cause overall instability.


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