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Short Tales about Noise and Measurement


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This webinar by Mykhailo Popryaga was delivered at Embedded Community Webinar #4 on September 18, 2020.

Webinar agenda:
- the problem of building systems for measuring electrical signals in the frequency range from tens of hertz to units of megahertz
- several interesting circuit solutions (lock-in amplifier, trans-impedance amplifier, low noise amplifier), which are widely used in scientific electronics
- noise and interference problems and general stages of measuring system development

More details and presentation:

Published in: Technology
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Short Tales about Noise and Measurement

  1. 1.   Books  Mixed Signal and DSP Design Techniques, Walt Kester (є  переклад)  Data Conversion Handbook by Analog Devices Inc. Walt Kester  Operational Amplifier Noise, Art Kay  Low-Noise Electronic System Design  by C. D. Motchenbacher, J. A. Connelly  The Art of Electronics: The x Chapters 1st Edition   by Paul Horowitz, Winfield Hill (є переклад, The Art of  Electronics 2015 р. в мережі )  Current sources & voltage references   by Linden T. Harrison  Analog Circuits World Class Design  Robert A. Pease, Editor  Analog Circuit Design. Design Note Collection   by Bob Dobkin, John Hamburger    Persons   David L. Jones ​  xDevs Illya Tsemenko  Mickle радиокот    Instruments  DMM 5 ½ or more  Red pitaya  Attenuators  Noise generator  Pulse generator 
  2. 2. Sine generator  Laboratory amplifier  LNA for 1/f noise measurements    Expendable materials  Op-amp, instrumental amplifiers  Resistors, ​capacitors  Metal boxes, battery, wires    References      Resistors  MELF resistors  Thin film SMD resistors  Electrometric resistors up to 1Tohm (like RI82-10x5, MOX1125-23E)  Metal film and wire resistors  Dividers  (Welmegox, Ohmcraft, Vishay Dale) 
  3. 3.            
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  5. 5.          
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  7. 7.   Matching and fitting        I,q,U, dU,  matching, max  gain            filtration,  anti-aliasing,  Lock-in        transient  response        1/f noise and  capacitor,  oversampling     
  8. 8.     Distortion, interference and Mr. Noise.    additive and multiplicative hindrances and 1/f noise!      thermal noise. “Good noise”. 
  9. 9.     Standard deviation         
  10. 10.      
  11. 11.    
  12. 12.   Lock-in amplifier, TIA, Servo 
  13. 13.     TIA(I,q) 
  14. 14.   Servo 
  15. 15.   TIA + Servo 
  16. 16.     LNA (U, dU)  -OP-AMP   MT-049 "Op Amp Total Output Noise Calculations for  Single-Pole Syste"  MT-050 "Op Amp Total Output Noise Calculations for  Second-Order System"  AN-940 Low Noise Amplifier Selection Guide for Optimal  Noise Performance 
  17. 17.     -OP-AMP+bjt  Design of ultra low noise amplifiers  Vojtěch Janásek,    -OP-AMP+jfet  AN106 Low-Noise JFETs — Superior Performance to  Bipolars  LSK489 Application Note Bob Cordell     
  18. 18.   see ​        But the best LNA is transformer  Jensen AN-002 ANSWERS TO COMMON QUESTIONS  ABOUT AUDIO TRANSFORMERS by Bill Whitlock   
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  23. 23.   APPLICATION NOTE 2236 Gamma-Photon Radiation  Detector      1/F noise. Reff 
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  25. 25.