Filters Wizard - Analog Devices ADAV4601 System Design Document

Filters Wizard

This wizard controls any filter cell created in SigmaStudio. It automatically supports single and multiple filter cells.
The filters can be controlled by cut off frequency (gain will be a fix value for the frequency range) or by gain (cut off
frequency will be fix for the gain range).
The filter selected (either gain or frequency controlled) should have as well a filter shape or type.
Filter Wizard: Gain Control
A filter controlled by gain will have all the frequency related parameters fixed. Writing to the gain value field, the
gain response of the filter will change.
1) Select Filter Type
2) Set Slope and
Sample Frequency
3) Configure Default,
Range and Step Size
Filter Wizard: Frequency Control
A filter controlled by frequency will have all the gain related parameters fixed. Writing to the cut off frequency value
field, the cut off frequency response of the filter will change.
ADAV4601 System Design Document
Rev.1 August 2009
Figure 60: Select Gain or Frequency control
Figure 61: Filter control for Gain (dB)
Figure 62: Filter control for Frequency (Hz)
Analog Devices
If ticked, writing a 0 to the
field will disable the filter
4) Set Default Cut off
Frequency (fixed value)
5) Select OK
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