Single-Supply Fliege High Q Notch Filter

Problem:
How does a designer make a Fliege high Q notch filter that operates from a Single-Supply?

Solution:
Use the circuit below:



This circuit has a fixed gain of 1 (0 dB), and a fixed Q of 1.

The designer, if not familiar with the topics, may want to review Coupling Capacitors (Cin in the schematic) and Virtual Grounding (Vcc/2 in the schematic).