1 / 13

Ring of Three Design Example

Ring of Three Design Example. Simulate this two pole Butterworth filter where:. Use only 100 nF capacitors in your design. Design 1. Both capacitors must be 100 nF:. Design 2. 23 k W. 23 k W. 23 k W. 100 nF. Design Example 2. Simulate this two pole Butterworth filter where:.

huey
Download Presentation

Ring of Three Design Example

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ring of Three Design Example Simulate this two pole Butterworth filter where: Use only 100 nF capacitors in your design

  2. Design 1 Both capacitors must be 100 nF:

  3. Design 2 23 kW 23 kW 23 kW 100 nF

  4. Design Example 2 Simulate this two pole Butterworth filter where: Again, use only 100 nF capacitors in your design

  5. Design 1

  6. Design 2 Both capacitors must be 100 nF:

  7. Leapfrog Filters • By continuing the concepts of operational simulation, higher order filters can be built • Each inductor requires an inverting integrator (1 op-amp), each capacitor requires a non-inverting integrator (2 op-amps) • Op-amps required = 3N/2 • Complex circuits can be simulated using similar principles • Scale factors for all variables can be adjusted arbitrarily • By doing this, the output voltage range for each op-amp can be adjusted to maximise the dynamic range of the filter

  8. Comparison of Active Filter Designs • Synthesis by Sections • Low op-amp count – N/2 • Noise/output voltage range trade off • Sallen & Key sensitivity • Component Simulation • Robust despite component tolerances • Higher op-amp count – N • Easier to realise transmission zeros • Dynamic range limitation • Operational Synthesis • Robust again • Even higher op-amp count – 3N/2 • Op-amp output ranges can be individually optimised.

  9. Revision • What should you be expected to do in a typical exam question ? • Understanding of basic principles. • Ability to perform simple circuit analysis and/or design. • Applying skills to unfamiliar problems.

  10. Power Amplifiers • Basic Principles • Operating modes of amplifiers • Power dissipation and thermal effects • Design/Analysis • Class A, B, AB amplifiers • Use of multiple transistor units (Darlington) • Associated circuits (current mirror, VBE multiplier)

  11. Low Noise Amplifiers • Basic Principles • Noise figure and noise temperature definitions • Sources of noise • Equivalent circuits • Design/Analysis • Noise figure of a common-emitter amplifier

  12. High Frequency Amplifiers • Basic Principles • Frequency response calculations • Internal junction capacitances of a BJT • The Miller effect • Design/Analysis • Frequency responses of • A common-emitter amplifier • A cascode amplifier

  13. Active Filters • Basic Principles • Types of filter and differences between them • Transfer functions, poles and zeros • Design/Analysis • Synthesis by sections, first and second order Sallen and Key sections • Component simulation for • Grounded inductors • Floating inductors • Grounded FDNRs • Operational Simulation: Ring of Three

More Related