Calculate the cutoff frequency of first-order RC and RL filters and second-order LC filters, or pick a component for a target frequency with standard E-series values. Includes a Bode magnitude plot and attenuation table.
Cutoff frequency (โ3 dB)
1.592 kHz
Angular frequency ฯ
10 krad/s
Time constant ฯ
100 ยตs
5ฯ (99.3 % settled) = 500 ยตs
Magnitude Response
Rolloff: โ20 dB/decade (1st order)
| Frequency | Gain | Vout / Vin | Phase |
|---|---|---|---|
| 159.2 Hz | -0.04 dB | 0.9950 | -5.7ยฐ |
| 795.8 Hz | -0.97 dB | 0.8944 | -26.6ยฐ |
| 1.592 kHz | -3.01 dB | 0.7071 | -45.0ยฐ |
| 3.183 kHz | -6.99 dB | 0.4472 | -63.4ยฐ |
| 15.92 kHz | -20.04 dB | 0.0995 | -84.3ยฐ |
| 159.2 kHz | -40.00 dB | 0.0100 | -89.4ยฐ |
fc = 1 / (2ฯ R C)