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AN3984 Datasheet(PDF) 21 Page - STMicroelectronics

Part # AN3984
Description  The purpose of this document is to provide a tool to calculate
PDF  46 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3984 Datasheet(HTML) 21 Page - STMicroelectronics

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AN3984
Examples
Doc ID 022240 Rev 1
21/46
5.7
Notch filter
Input data:
●
Cutoff freq: 1 kHz
●
Quality factor: 0.5
●
Coefficient range: 4
●
Processing frequency: 96 kHz
Output data:
Figure 7.
Notch filter - magnitude response
Filter coefficients
'Coeff 1: b1/2'
'Coeff 2: b2'
'Coeff 3: -a1/2'
'Coeff 4: -a2'
'Coeff 5: b0/2'
'e2075a'
'1e091b'
'1df8a5'
'e3edc8'
'0f048d'
10
-1
10
0
10
1
-60
-50
-40
-30
-20
-10
0
Frequency (kHz)
Magnitude Response (dB)



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