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Maximizing ADC Performance with Oversampling Techniques

Explore oversampling in A/D conversion and its benefits in reducing quantization noise, implementing anti-alias filtering, and using noise shaping techniques. Understand the role of Delta-Sigma modulation and NTF in enhancing ADC performance.

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Maximizing ADC Performance with Oversampling Techniques

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  1. Oversampling A/D Conversion Dr. Hossein Shamsi ECE Dept, K.N. Toosi University of Technology

  2. Why oversampling?

  3. Anti-Alias Filtering

  4. Quantization Noise

  5. Digital Noise Filter (1)

  6. Digital Noise Filter (2)

  7. Noise Shaping

  8. Noise Shaping Using Feedback (1)

  9. Noise Shaping Using Feedback (2)

  10. Discrete Time Integrator

  11. First Order “Delta-Sigma” Modulator

  12. NTF Frequency Domain Analysis

  13. In-Band Quantization Noise (1)

  14. In-Band Quantization Noise (2)

  15. SQNR Improvement

  16. DAC Requirements

  17. Modulator with Single-Bit Quantizer

  18. Simulated Response

  19. Spectrum

  20. Higher Order Modulators

  21. In-Band Quantization Noise

  22. In-Band Quantization Noise

  23. Building a Second-Order Modulator

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