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CIRCUIT060055
Multiple feedback band-pass filter circuit
CIRCUIT060055
Overview
This circuit is a 2nd-order multiple feedback (MFB) band-pass (BP) filter. This BP filter is created by cascading a low-pass and a high-pass filter. Vref provides a DC offset to accommodate for single-supply applications.
Features
- Input: Vi = -2.45 V to 2.45 V
- Output: Vo = 0.05 V to 4.95 V
- Supply:
- Vcc = 5 V
- Vee = 0 V
- Gain: 1 V/V
- Low cutoff frequency: 1 kHz
- High cutoff frequency: 10 kHz
- Vref = 1.25 V and 2.5 V
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- Read the circuit design
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Circuit design | Single-supply, 2nd-order, multiple feedback band-pass filter circuit | PDF | HTML | 28 Jun 2021 |
| Application note | FilterPro™ MFB and Sallen-Key Low-Pass Filter Design Program User Guide (Rev. C) | 25 Feb 2011 | ||
| Application note | Basic Introduction to Filters - Active, Passive, and Switched-Cap (Rev. A) | 21 Apr 2010 | ||
| Analog Design Journal | Using infinite-gain, MFB filter topology in fully differential active filters | 14 Jul 2009 |
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