Filter Design

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2. Simulate the circuit that you designed in PSpice. Use appropriate standard values of resistors. Be careful to only pick values available in the EECS shop. Determine the power supply filter capacitors by looking at the LM 318 datasheet on the lab website. Follow the steps below to create the circuit simulation. If you do not follow the steps below the simulation will work, but the circuit will not transfer to PCB Editor correctly. Creating your Circuit Schematic in Allegro <strong>Design</strong> Entry CIS (PSpice) so it is compatible with PCB Editor a. Create a new “Analog or Mixed A/D” blank project. b. Select and delete all libraries currently in the “Libraries” field. The only library left will be the <strong>Design</strong> Cache (because it may not be deleted), but do not use any of its parts. → c. Add the libraries located in the following folder: P:\Cadence\SPB_16.3\tools\capture\library\pspice\EECS libs → d. Create your schematic for simulation using the components in this folder. The recommended components are: Resistor – R/ANALOG Capacitor – C disc/ANALOG OP Amp – LM318 Date Last Modified: 5/6/2013 11:53 PM 4
3. Bias the op-amp with a ±12 V supply. Apply an AC signal of 1Vpp to the Input. 4. Obtain the Frequency Response (the Bode Plot – magnitude and phase) of the filter using PSpice. 5. After you have completed steps 1 through 5 and you have been approved by your TA order your components from the EECS shop. YOU ARE REQUIRED TO SAVE A RECORD OF YOUR ORDERED PARTS LIST TO BE SUBMITTED IN THE LAB REPORT. Once you have ordered your components you may pick up the components next week before lab, or whenever the EECS shop has them finished (The EECS shop will probably not have your order finished the same day you submit the order). 6. Once the circuit has been analyzed using PSpice, the schematic must be modified for fabrication before proceeding to PCB Editor. Test Points need to be inserted at the input, output and at the two supply voltage pins. These test points allow a convenient point to attach probes for sources and test measurement. TPs are available in the connector library. Below is an illustration of using test points on an “example” circuit. **Note that the above circuit is just an example. ** Vac_+ V_DC_Supply _5Vdc_+ 1Vac 0Vdc 1 TEST POINT 1 TEST POINT 5Vdc 1 1 TEST POINT TEST POINT V_DC_Supply _5Vdc_- Vac_- 7. After your simulation circuit has been modified with test points, create the PCB Layout using the LP/HP filter circuit you have already developed in PSpice. Refer to the Circuit Board Fabrication Tutorial for 212 Lab handout to create the PCB Layout of the circuit. This must be completed before the start of Week 2. Date Last Modified: 5/6/2013 11:53 PM 5
Page 1 and 2: Circuits 212 Lab Lab #6 Filter Desi
Page 3: HIGH PASS Note that the op-amp is u
Page 7: Observations Table: Filter gain ver

Filter Design

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