Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Isolation between AGND and DGND in the 100 MHz or even GHz range isn't but an illusion. It neither works on the PCB level, because the planes are coupled planar structures nor on the chip level, because both are implemented on a common substrate, either directly connected on chip or maximal isolated by a diffusion well.
Separated grounds serve a purpose for power supplies or for signal circuits in the DC to 100 kHz, possibly low MHz range.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
