This classic was the first to fill the need for an undergraduate text in analog filters for electrical engineering. Intended for juniors and seniors with a background in introductory circuits, including Laplace transforms, the text focuses on inductorless filters in which the active element is the operational amplifier (op-amp). Passive LCR filters are excluded except as prototypes from which an active equivalent is then found. Students learn the importance of op-amps to analog systems, which Van Valkenburg equates with the significance of the microprocessor to digital systems. Because the book is inteded for undergraduates, sophisticated mathematics has been avoided wherever possible in favor of algebraic derivations. Design topics require at most a hand-held calculator.

1. Introduction; 2. Resistor Op-Amp Circuits; 3. Bilinear Transfer Functions and Frequency Response; 4. Cascade Design with First-Order Circuits; 5. The Biquad Circuit; 6. Butterworth Low-Pass Filters; 7. Butterworth Band-Pass Filters; 8. The Chebyshev Response; 9. Sensitivity; 10. Delay Filters; 11. Frequency Transformation; 12. Highpass and Band-Elimination Filters; 13. Inverse Chebyshev and Cauer Filters; 14. Prototype and Frequency-Transformed Ladders; 15. Ladder Design with Simulated Elements; 16. Leapfrog Simulation of Ladders; 17. Switched Capacitor Filters; 18. Delay Equalization; 19. Op-Amp Oscillators; 20. Better Op-Amp Models; Appendix: Scaling; References

M. E. Van ValkenburgDepartment of Electrical Engineering