8-Pole, 6-Zero
Elliptic, 2.00
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.00
0.00
0.00
0.885
0.10
-0.001
-31.9
0.891
0.20
-0.015
-64.2
0.903
0.30
-0.040
-97.0
0.922
0.40
-0.042
-131
0.958
0.50
-0.001
-166
1.020
0.55
0.000
-185
1.057
0.60
-0.007
-204
1.099
0.65
-0.027
-225
1.140
0.70
-0.045
-245
1.193
0.75
-0.040
-268
1.269
0.80
-0.014
-291
1.377
0.85
-0.001
-317
1.513
0.90
-0.031
-346
1.677
0.95
-0.036
-378
1.960
1.00
-0.046
-419
2.681
1.10
-7.910
-525
2.127
1.20
-21.06
-573
0.856
1.30
-31.96
-597
0.509
1.40
-41.51
-612
0.357
1.50
-50.35
-623
0.271
1.60
-58.90
-632
0.216
1.70
-67.54
-639
0.177
1.75
-72.04
-642
0.162
1.80
-76.79
-645
0.149
1.85
-81.93
-647
0.138
1.90
-87.78
-650
0.128
1.95
-95.04
-652
0.119
2.00
-106.6
-654
0.111
2.20
-106.0
-481
0.087
2.40
-121.3
-307
0.070
2.60
-106.5
-311
0.058
2.80
-105.0
-315
0.049
3.00
-106.4
-318
0.042
3.50
-123.6
-325
0.030
4.00
-111.5
-149
0.022
5.00
-105.4
-156
0.014
6.00
-105.1
-160
0.010
7.00
-106.0
-163
0.007
8.00
-107.3
-165
0.005
9.00
-108.6
-167
0.004
10.0
-110.0
-168
0.003
1.Normalized
Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Normalized Delay
Actual Delay =
Actual Corner Frequency (fc) in Hz
Low-Pass
Frequency Response
0
-20
Amp (dB)
-40
-60
-80
-100
-120
0.1
2
1.0
2 3 4 5 6 7
10.0
Normalized Frequency(f/fc)
3 4 5 6 78
Delay
(Normalized)
4.0
Delay (sec)
2.0
0.8
0.0
0.1
0.15 2
1.0
1.5
Normalized Time (1/f sec)
3
4
5 6 7 89
Step Response
Step Response (V/V)
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
0
1
2
3
4
Normalized Time (1/f sec)
5
25
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