PLL 基本知識

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1. On Noise Sources in a PLL System 11
Discusses the causes of phase noise and how to roughly predict it.
2. On RMS Phase Error and it’s Calculation 19
Discusses the meaning, calculation, and significance of RMS phase error.
Spurs
3. Reference Spurs and their Causes 24
Addresses the causes of reference spurs and what can be done about them.
4. Non-Reference Spurs and their Causes 34
Addresses different types of spurs, their causes, and their cures.
Lock Time
5. Transient Response of PLL Frequency Synthesizers 42
Addresses in depth lock time issues and derives all relevant equations.
Other Topics
6. Discussions of the Phase/Frequency Detector for the Armchair 57
Philosopher
Discusses the how’s and why’s of the operation of the phase-frequency
detector.
Part III PLL Design
Methods for Passive Loop Filter Design
7. Exact Equations for PLL Design 65
Gives design equations that do not use any approximations except
for the continuous time approximation. Uses numerical methods.
8. Designing Loop Filters for Optimal Attenuation 74
Discusses how to choose the value of ATTEN in an optimal way
9. A Fourth Order Filter Design 79
Discusses the theory and design adding additional filtering for
reference sidebands.
10. The Effect of Various Filter Parameters on Reference Spurs for a 86
Second Order Filter
Active Filters for High Voltage Tuning for a VCO
11. A Simple Method for High Voltage Tuners 89
Discusses how to add an op amp for an active filter using the Do pin.
12. Design of a Loop Filter Using the fr and fp pins 90
Discusses using these pins with an op amp to design an active filter
13 Designing an Active filter with the Do pin and Op Amp 96
Discusses using an op amp with components in the feedback path.
14. A Design for a High Voltage Tuner 100
Discusses a design using transistors to increase the tuning voltage to the VCO
Part IV Supplemental Information
15. Lock Detect Circuit Construction and Analysis 109
Discusses how to build a more sensitive lock detect circuit and how it works.
16. Other PLL Design and Performance Issues 114
N value determination, peaking and phase margin, impedance matching,
sensitivity, concluding remarks
17. Glossary 117
Lists various PLL terms and symbols used in this book with their definitions.
- Supplemental Diagrams 121