Analog Supply without a Ferrite: Proper Isolation Techniques Explained

Learn why ferrite beads aren't the best solution for isolating analog and digital supply pins on integrated circuits. In this in-depth tutorial, Tech Consultant Zach Peterson examines common misconceptions about using ferrite beads for isolation and presents superior alternatives including dedicated LDOs, precision voltage references, and proper filtering techniques to achieve cleaner analog signals in your designs. Discover proven approaches based on real-world examples and research from industry experts. Whether you're designing mixed-signal circuits or working with microcontrollers, these power supply best practices will help you achieve better performance in your analog measurements and reduce interference. 👉 Resources from this video: - DC-Aware Return Current in Mixed Signal PCBs: https://resources.altium.com/p/dc-aware-return-current-mixed-signal-pcbs?utm_source=youtube&utm_medium=social&utm_campaign=yt-sponsor&utm_content=altium-academy - PDN Application of Ferrite Beads: https://www.nwengineeringllc.com/files/PDN_Ferrite_Beads.pdf - Everything You Need to Know About Ferrite Beads: https://resources.altium.com/p/everything-you-need-to-know-about-ferrite-beads?utm_source=youtube&utm_medium=social&utm_campaign=yt-sponsor&utm_content=altium-academy 👉 Exclusive 15 Days Free Altium Designer Access: https://www.altium.com/promotions/altium-academy 💡 Stay Connected: Don't forget to like, comment, and subscribe for more in-depth tutorials and tips from @AltiumAcademy! Share your thoughts and questions in the comments below! 👉 Subscribe for more: https://www.youtube.com/@AltiumAcademy?sub_confirmation=1 Don't forget to follow us on social to stay up-to-date on the latest Altium Academy content. 👉 Follow Altium on TikTok: https://www.tiktok.com/@altiumdesigner 👉 Follow Altium on Twitter: https://twitter.com/altium 👉 Follow Altium on Linkedin: https://www.linkedin.com/company/altium/ 👉 Follow Altium on Facebook: https://www.facebook.com/AltiumOfficial/ 👉 Ready to try the industry's best-in-class design experience yourself? Download it today and get started! https://www.altium.com/downloads?utm_source=youtube&utm_medium=social&utm_campaign=yt-sponsor&utm_content=altium-academy The Altium Academy is an online experience created to bring modern education to PCB Designers and Engineers all across the world. Here you can access a vast library of free training and educational content covering everything from basic design to advanced principles and step-by-step walkthroughs. Join industry legends as they share their career knowledge, review real-life design projects, or learn how to leverage one of Altium's leading design tools. No matter your level of experience, the Altium Academy can help you become a better Designer and Engineer! About Altium LLC Altium LLC (ASX:ALU), a global software company based in San Diego, California, is accelerating the pace of innovation through electronics. From individual inventors to multinational corporations, more PCB designers and engineers choose Altium software to design and realize electronics-based products. #PCBDesign #AnalogCircuits #PowerSupply 0:00 Intro 0:51 LC Filters, PDN Simulations, & Supplying Power 6:41 PDN Application of Ferrite Beads 11:16 A Lower Effort Path Forward 13:50 Two Supplies & Precision Voltage Reference