1 / 5

Solutions

1. Using the gain bandwidth product, find the bandwidth of the circuit below. Use the AOL curve and closed loop gain to graphically determine the bandwidth of this circuit. Find the bandwidth using an “ac transfer characteristic” simulation. Solutions.

jonco
Télécharger la présentation

Solutions

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. 1. Using the gain bandwidth product, find the bandwidth of the circuit below. Use the AOL curve and closed loop gain to graphically determine the bandwidth of this circuit. Find the bandwidth using an “ac transfer characteristic” simulation.

  2. Solutions

  3. 1. The hand calculation for closed loop bandwidth gives BW = 351kHz. Note that the noninverting gain (also called noise gain) was used even though the amplifier is an inverting configuration. OPA188 Data Sheet

  4. 1. Using the AOL curve from the data sheet we can also estimate bandwidth. The estimate is very close to the calculated bandwidth.

  5. 1. Using Tina Spice you can verify the bandwidth. Note that the simulated bandwidth is close but not exactly the same as the calculated bandwidth. The error may be from secondary effects (e.g. input capacitance) or model accuracy issues.

More Related