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Day 3

Day 3. Techniques to Minimize Noise and Interference in Instrumentation Design Instrumentation Amplifiers. Strategies to deal with noise - 1. Characterize internal and external sources Minimize external sources as best possible Eliminate external noise sources

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Day 3

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  1. Day 3 Techniques to Minimize Noise and Interference in Instrumentation Design Instrumentation Amplifiers

  2. Strategies to deal with noise - 1 • Characterize internal and external sources • Minimize external sources as best possible • Eliminate external noise sources • Identify mechanisms by which it influences your circuit • Reduce the intensity of the external sources • Reduce the susceptibility of your design to external sources

  3. Strategies to deal with noise - 2 • Optimize circuit design • Minimize impact of internal sources • Device selection • Circuit design • Optimize system design to minimize circuit level noise and interference • Employ signal processing to deal with remaining noise • Filtering • Signal averaging • Other creative approaches

  4. Techniques to Minimize External Noise and Interference • Review of external noise and interference sources • Techniques to minimize external noise • Shielding • Grounding • Introduction to instrumentation amplifiers • Lab

  5. What are sources of external noise and interference?

  6. Mechanisms of action of external noise • Capacitive coupling • Magnetic coupling • Conductive coupling • “common impedance coupling” • “ground loop”

  7. Mechanisms of action of external noise • Capacitive coupling • Magnetic coupling • Conductive coupling • “common impedance coupling” • “ground loop”

  8. Mechanisms of action of external noise • Capacitive coupling • Magnetic coupling • Conductive coupling • “common impedance coupling” • “ground loop”

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