Skip to main content
Engineering LibreTexts

11: Active Filters

  • Page ID
  • Learning Objectives

    After completing this chapter, you should be able to:

    • Describe the four main types of filters.
    • Detail the advantages and disadvantages of active versus passive filters.
    • Describe the importance of filter order on the shape of a filter's response.
    • Describe the importance of filter alignment on the shape of a filter's response.
    • Compare the general gain and phase response characteristics of the popular filter alignments.
    • Analyze high- and low-pass Sallen and Key filters.
    • Analyze both low and high Q band-pass filters.
    • Analyze state-variable filters.
    • Analyze notch filters.
    • Analyze cascaded filters of high order.
    • Detail the operation of basic bass and treble audio equalizers.
    • Explain the operation of switched capacitor filters, and list their relative advantages and disadvantages compared to ordinary op amp filters.

    • Was this article helpful?