#738 Active Filter Cookbook
Book notes: Active Filter Cookbook, by Don Lancaster. First published January 1, 1996.
Notes
See also:
Contents
CHAPTER 1: SOME BASICS
- Why Use Active Filters?
- Frequency Range and Q
- A Simple Active-Filter Circuit
- Types of Active-Filter Circuits
- Some Terms and Concepts
- A Design Plan
CHAPTER 2: THE OPERATIONAL AMPLIFIER
- A Closer Look
- Some Op-Amp Circuits
- Some Op-Amp Limitations
- Which Operational Amplifier?
CHAPTER 3: FIRST AND SECOND-ORDER NETWORKS
- Normalization and Scaling
- First-Order Low-Pass Section
- First-Order High-Pass Section
- Second-Order Low-Pass Section
- Second-Order Bandpass Section
- Second-Order High-Pass Section
- Other Second-Order Responses
- K and S
- Summing Things Up
CHAPTER 4: LOW-PASS AKD HIGH-PASS FILTER RESPONSES
- Order
- Selecting a Shape
- Low-Pass Response Curves
- High-Pass Filter Characteristics
- How Accurate?
- Using the Curves
- Can We Do Better?
CHAPTER 5: BANDPASS FILTER RESPONSE
- Some Terms
- Selecting a Method
- Filter-Shape Options
- Second-Order Bandpass Filter
- Two-Pole, Fourth-Order Bandpass Response
- Three-Pole, Sixth-Order Bandpass Response
- Component Tolerances and Sensitivities
- Using This Chapter
CHAPTER 6: LOW-PASS FILTER CIRCUITS
- Types of Low-Pass Filters
- First-Order Low-Pass Circuits
- Second-Order Low-Pass Circuits
- Unity-Gain Sallen-Key Circuits
- Equal-Component-Value Sallen-Key Circuits
- Unity-Cain State-Variable Circuits
- Variable-Gain State-Variable Circuits
- The “Ripoff” Department
- Pitfalls and Restrictions
- Some Design Rules
CHAPTER 7: BANDPASS FILTER CIRCUITS
- Multiple-Feedback Bandpass Circuit
- Sallen-Key Bandpass Circuit
- State-Variable Active Filters
- The Biquad-Frequency Limitations
- Some Rules
- Ringing, Electronic Bells, and the Time Domain
CHAPTER 8: HIGH-PASS FILTER CIRCUITS
- Some High-Pass Restrictions
- First-Order High-Pass Circuits
- Second-Order High-Pass Circuits
- Another “Ripoff” Department
- Some High-Pass Design Rules
CHAPTER 9: TUNING, VOLTAGE CONTROL, ANO ELLIPTICAL FILTERS
- Components and Tuning
- Manual Wide-Range Tuning
- Voltage and Digital Control
- Two New Techniques-A Two-Quadrant Multiplier
- Notch Filters
- Cauer or Elliptical Filters
CHAPTER 10: SOME APPLICATIONS-WHAT GOOD ARE ACTIVE FILTERS?
- Brainwave Research
- Electronic Music
- Audio Equalizers
- Quadrature Art
- Oscillators and Signal Sources
- Test and Lab Filters
- Speech Therapy
- Psychedelic Lighting
- Tone Signalling
- Modems
- Other Applications
REFERENCES