Single-Supply Analog Filter Expert
How does a designer implement an analog op-amp filter design that operates from a Single-Supply voltage?
This is the Texas Instruments Single-Supply filter design expert. There are some topics that are too advanced for the knowledgebase format, but the
designer will at least be offered references for more advanced filter design topics.
There are two major topics with which the designer should be familiar prior to implementing a Single-Supply filter:
If these concepts are understood, the designer can click on the area or text of interest:
- The designer must be familiar with how to generate the "Vcc/2" that is shown in these schematics. This is the Virtual Ground of the filter
circuit - a small, localized ground system within the filter.
- The designer must know how to isolate the virtual ground of the filter from the rest of the system with Coupling Capacitors.