Analog Wizard™ Filter: Home

Analog Filter Wizard™ v1.0

Design & Product Selection Tool

Analog Filter Wizard™ (BETA) helps you select and design in an operational amplifier that fits your filter application needs. The Filter Wizard works in conjunction with the Active Filter Synthesis Design Tool which together will guide you through the filter application design process. These steps include Entering Filter Criteria, Reviewing Recommended Parts, Active Filter Synthesis Design, and finally generating a Bill of Materials and/or a Spice Netlist.

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For additional information please refer to the Definition of Terms.

Step
Enter Filter Criteria

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2. Enter Filter Type:
		Lowpass filters pass frequencies below the cutoff and attenuate those above.


3. Filter Response:
		The Butterworth filter is the best compromise between attenuation and phase response. It has no ripple in the pass band or the stop band; because of this, it is sometimes called a maximally flat filter. The Butterworth filter achieves its flatness at the expense of a relatively wide transition region from pass band to stop band, with average transient characteristics. More Info (pdf, 25,000 bytes)

4. Enter Filter Order: 4a. Single Pole Type:		Active Single Pole Lowpass

5. Enter Fc:*



6. Enter Filter Topology:
		The Sallen-Key configuration, is one of the most widely used filter topologies. This configuration shows the least dependence of filter performance on the performance of the op amp. More Info (pdf, 5,434,001 bytes) Sallen Key Lowpass:

2. Enter Filter Type:
		Lowpass filters pass frequencies below the cutoff and attenuate those above.


3. Enter Filter Criteria: (click on a parameter to obtain more information)

Fc:*


Amax:*	dB


Fs:*


Amin:*	dB

Additional Resources

Analog Dialogue

Analog Filters (pdf)

Application Notes

Circuit Notes

8-Pole Active Low-Pass Filter Optimized for Precision, Low Noise, and High Gain Using the AD8622 and the ADA4062-2 Op Amps (CN0127) (pdf)


	Legal Disclaimer: Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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