O cenário
Designing a maximally flat two-pole low-pass filter for audio or sensor signal conditioning.
O que há neste desenho
Entenda as decisões por trás dele.
01
Use equal source and load termination (1kΩ) for Butterworth response
02
Choose L=22.5mH and C=22.5nF for 10 kHz cutoff
When a simple, passive second-order low-pass filter is acceptable and no gain is required.