Mixed signal
Mixed-signal ( English , dt. Mixing signals or mixed signals ) is a generic term for the processing of both analog and digital electrical (input) signals in z. B. electrical measuring devices such as oscilloscopes or for integrated circuits that process both analog and digital signals.
Since digital signals usually have very steep signal edges with a corresponding interference potential, special precautions are required in mixed-signal applications, such as B. Shielding and separate ground potentials that are only connected to one star point , so that the analog signals are not disturbed by the digital ones. Attention and, if necessary, compromises require the different requirements of analog and digital circuits on the semiconductor manufacturing process .
One application example is the analog-digital converter .
See also
literature
- Chieh Lin, Arthur HM Van Roermund, Domine MW Leenaerts: Mixed-Signal Layout Generation Concepts . Kluwer Academic Publ., 2003, ISBN 1-4020-7598-7 (especially chapter 8).
- Henry W. Ott: Partitioning and Layout of a Mixed-Signal PCB . In: Printed Circuit Design . No. 6 , 2001, p. 8–11 ( PDF ).
Individual evidence
- ↑ Bill Laumeister: Well Grounded, Digital Is Analog . In: Maxim Electronics Application Notes . tape 4345 , 2008 ( PDF ).
- ↑ Duncan Macadie: Audio Quality in the DVD age. (PDF) Wolfson Microelectronics, 2006, accessed January 12, 2009 .