Post Go back to editing

With the filter wizard it would be good to have a tool that calculates a 3rd order Sallen Key filter.

Thread Summary

The user requested a tool to calculate a 3rd order Sallen Key filter, which involves an additional RC circuit. The final answer explains that the filter wizard tool assumes each stage is buffered to prevent loading, but suggests exporting the circuit to SPICE, removing the buffer, and checking performance. The engineer recommends keeping the RC filter impedance 10x less than the Sallen Key components and adjusting component impedance in the tool's 'Choose for me' mode.
AI Generated Content

With the filter wizard it would be good to have a tool that calculates a 3rd order Sallen Key filter - this is a standard 2nd order Sallen Key filter, but with an extra RC circuit on the front end to give an extra pole. The maths behind this is hard to do manually.

Before You Switch


Switching languages will make ADI Explorer unavailable. Resume your session by switching back to English and reopening ADI Explorer.