Signal Conditioning

Amplification, filtering, and level shifting for sensor interfaces.

Signal conditioning prepares sensor signals for digitization or processing. Amplification, filtering, linearization, and level shifting are essential steps in any sensor interface design.

Objectives

  • Design instrumentation amplifiers for differential signals
  • Implement bridge circuits for resistive sensors
  • Apply anti-aliasing filters before ADC
  • Use level shifters for voltage translation
  • Add protection circuits for field interfaces

Key Takeaways

  • Instrumentation amps excel at small differential signals
  • Bridge circuits convert resistance change to voltage
  • Anti-aliasing filters must precede ADC
  • Input protection essential for field-deployed sensors