Grounding in Mixed-Signal Systems Demystified, Part 1¶
Pithadia, S., & More, S. Grounding in Mixed-Signal Systems Demystified, Part 1.
Cited by¶
1 citation across 1 artifact.
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Mechanisms¶
- Incompatibility Root-Cause Analysis
- … — does the fault track motor current? does shielding change it? does a ground-plane rework fix it? — walks back the chain: the erratic readings follow motor switching, which couples electromagnetic interference into the sensor's unshielded reference trace, because the board layout put them on a shared ground return.
This sourceTexas Instruments Analog Applications Journal. 1Q 2013: 5–10. (2013). Explains that PCB grounding and return-path layout can allow noisy digital switching currents to contaminate low-level analog circuitry.
- … — does the fault track motor current? does shielding change it? does a ground-plane rework fix it? — walks back the chain: the erratic readings follow motor switching, which couples electromagnetic interference into the sensor's unshielded reference trace, because the board layout put them on a shared ground return.
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