Differential Multiple Feedback Bessel Low Pass Filter

Problem:
How does a designer make a Differential Multiple Feedback Bessel low pass filter?

Solution:
Use the circuit below:



This circuit is configured for unity gain. Contact Texas Instruments Applications if a gain other than 1 is required.

Differential filters are symmetrical. Passive components are mirror imaged on the top and bottom of the schematic. Components closing the top loop have an "A" suffix, and those closing the bottom loop have a "B" suffix.