What is the difference between different types of GND
https://electronics.stackexchange.com/questions/140293/what-is-the-difference-between-different-types-of-gnd
Web ResultNov 26, 2014 · You can think GND as a common reference point of a local system. From your "GND"s, the AGND, may represent the "analog ground", SGND may represent "signal ground", PGND may represent "power ground". For some reasons, such as safety, EMI, etc., we tend to split our system into many sub-systems.
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