It’s time for another Jim Williams analog IQ test! Today we examine the design, operation, and limitations of a simple voltage to frequency converter.
A qualitative and quantitative analysis of the Colpitts crystal oscillator circuit, oscillation requirements, and practical circuit design considerations.
References and additional reading:
|Quantitative analysis of Colpitts crystal oscillators||Crystal Oscillator Design and Temperature Compensation, Marvin E. Frerking, Chapter 7.3, Appendix F|
|Oscillator phase vs frequency, and crystal loaded Q analysis||Crystal Oscillator Circuits, Robert J. Matthys, Chapters 6, 7|
|Colpitts crystal oscillator phase vs gain analysis||Oscillator Design and Computer Simulation, 2nd Edition, Randall W. Rhea, Chapter 11.2|
|Crystal drive level equations||Intel application note AP-155 (Oscillators for Microcontrollers), Appendix A|
|Common collector gain equations||Common collector, Wikipedia|
|Transistor biasing||RF Circuit Design, Chris Bowick, Chapter 6|