STM32 Mixed-Signal Controller PCB — 8 Layers, SI/PI + EMC

STM32-based 8-layer mixed-signal PCB designed for production reliability, signal integrity, and EMC performance. The layout is built around continuous ground references and dedicated power distribution layers to maintain clean return paths, stable rails, and low-noise mixed-domain operation. High-speed and sensitive nets are routed with controlled impedance discipline where required, short loop areas, and via-transition stitching to reduce radiation and susceptibility. Power architecture is implemented with tight local decoupling at every supply pin, domain isolation between noisy/high-di/dt sections and precision analog regions, and carefully managed plane segmentation to avoid return discontinuities. The result is a manufacturing-ready PCB with predictable bring-up, reduced debug cycles, and documentation prepared for SMT assembly and test. If this is going into your portfolio, add a final line like: Designed and documented for SMT assembly and handoff (Gerbers/ODB++, drill, BOM, pick-and-place, assembly notes, DFM checks). And if you want a subtle CTA: PCB design by Circuit Board Design (Electuni LLC): https://www.circuit-board-design.com