Week 7 Lab Instructions
Lab Project: Active Filter Design
Purpose and Introduction
The purpose of this lab project is to design and analyze a Sallen-Key low-pass filter with a single op amp and two RC circuits based on the specifications provided.
Project Description
Design and analyze a Sallen-Key low-pass filter with a single op amp and two RC circuits. The filter should feature a -40 dB/decade roll-off rate. The basic circuit is given in the following figure.
Sallen-Key Low-Pass Filter Circuit
For the circuit, the pre-determined values are:
You are required to do the following.
⦁ Design the unknown value of circuit component(s) to achieve 2nd order Butterworth filter response.
⦁ Determine the critical frequency based on calculation, simulation, and verify this critical frequency by physical hardware implementation with oscilloscope displays.
⦁ Perform analysis based on simulation to show the circuit frequency response (hint: select 5 frequency points, one close to the critical frequency, 2 below the critical frequency, and 2 above the critical frequency as inputs. Observe the output responses to verify the theoretical expectations).
⦁ Draw the frequency response curve based on simulation (hint: select 5 frequency points, one close to the critical frequency, 2 below the critical frequency, and 2 above the critical frequency as inputs. Observe the output responses against the selected frequencies and draw the response curve to verify the theoretical expectations).
⦁ Perform analysis based on hardware implementation to show the circuit frequency response (hint: select 5 frequency points, one close to the critical frequency, 2 below the critical frequency, and 2 above the critical frequency as inputs. Observe the output responses to verify the theoretical expectations).
⦁ Draw the frequency response curve based on hardware implementation (hint: select 5 frequency points, one close to the critical frequency, 2 below the critical frequency, and 2 above the critical frequency as inputs. Observe the output responses against the selected frequencies and draw the response curve to verify the theoretical expectations).
Formal Lab Report Guidelines
All reports are required to contain the following sections.
⦁ Title Page
⦁ Table of Contents (by page numbers)
⦁ Table of Illustrations (by page or illustration number)
⦁ Project Specifications
⦁ Written Description of Project Operation
⦁ Documentation of Software Simulation and Hardware Implementations
⦁ Appendix (Data Sheets, Reference Material, etc.)
⦁ References
The following pages describe each of the above requirements. If you have additional questions, ask your professor about them.
DESCRIPTION OF SECTIONS
⦁ TITLE PAGE
Should use one full sheet of paper with the following information centered and each line triple spaced on the page starting on approximately line 20 (of a 66-line sheet).
⦁ TABLE OF CONTENTS
The table of contents should list the page numbers of each of the listed sections.
Page numbers should be located at the bottom center of each page.
⦁ TABLE OF ILLUSTRATIONS
The table of illustrations should list all figures, schematics and illustrations by figure, and page numbers. Page number requirements apply to all illustrations as well.
⦁ PROJECT SPECIFICATION
⦁ DESCRIPTION OF OPERATION
⦁ Project Description
⦁ Hardware Block Diagram
⦁ Input/Output Definition
⦁ Theory of Operation
⦁ Software and Hardware Operations
⦁ DOCUMENTATION OF SOFTWARE SIMULATION AND HARDWARE IMPLEMENTATION
⦁ Hardware Diagram
⦁ Input/Output Definition
⦁ Software Simulation Results and Findings
⦁ Hardware Implementation, Results, and Findings
⦁ The design of the circuit components and calculation process
⦁ Frequency ranges, minimum and maximum frequency -3dB points
⦁ Screenshots of simulation results and explanations
⦁ Pictures of hardware implementation, input/output displays, and related measurements
⦁ APPENDICES (DATA SHEETS, REFERENCE MATERIAL, ETC.)
⦁ REFERENCES
Points: 0 ECET220 Formal Project Report Rubric
Percent: 0%
Your Points Max Points
Complete Formal Report (40 points)
0 10 The writer has formatted the report using formal formatting, including the use of multiple heading levels, page numbers, title page, etc. The formal report should contain appropriate prefatory, text, and supplemental parts, including the following: a cover; a table of contents and list of figures; appropriately labeled body sections; and appendices, such as the list of references. The report should contain most of the report parts identified in the figure and specified in the Course Project.
0 15 The formal report fulfills the purpose of the assignment with sufficient technical in-depth and solid knowledge base at the level of the course. The report fulfills the purpose clearly and completely, using sufficient supporting information.
0 10 The report is founded upon sound research and uses at least three credible sources. The researched portions of the report are cited correctly, using APA citations.
0 5 The assignment is free of grammar, spelling, and punctuation errors.
0 40 A quality paper meets or exceeds the requirements listed above.
Comments:
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