CIRCUIT060011
Single-supply, second-order, multiple feedback high-pass filter circuit
CIRCUIT060011
Overview
The multiple-feedback (MFB) high-pass (HP) filter is a 2nd-order active filter. Vref provides a DC offset to accommodate for single-supply applications. This HP filter inverts the signal (Gain = –1 V/V) for frequencies in the pass band. An MFB filter is preferable when the gain is high or when the Q-factor is large (for example, 3 or greater)
Features
- Single 5-V supply
- Input: +/-2.45 V
- Output: 50 mV to 4.95 V
- Cutoff frequency: 1 kHz
- Gain: -1 V/V
Get started
- Read the circuit design
- Download the model
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Circuit design | Single-supply, 2nd-order, multiple feedback high-pass filter circuit | PDF | HTML | Jun 28, 2021 |
| E-book | Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. D) | PDF | HTML | Sep 24, 2024 | |
| Application note | Active Low-Pass Filter Design (Rev. D) | PDF | HTML | Feb 2, 2023 | |
| Application note | Compensation Methodology for Error in MFB Low-Pass Filter, Caused by Limited GBW | Aug 4, 2017 | ||
| Application note | Design Methodology for MFB Filters in ADC Interface Applications | Feb 23, 2005 | ||
| Application note | More Filter Design on a Budget | Dec 6, 2001 |