Low-Pass
4-Pole, 0.2 dB Ripple
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.00
0.000
0.00
.478
0.10
0.039
-17.3
.487
0.20
0.129
-35.2
.509
0.30
0.195
-54.0
.533
0.40
0.174
-73.4
.547
0.50
0.074
-93.2
.553
0.000
0.60
-113
.575
0.074
0.70
-135
.654
0.199
0.80
-162
.836
0.063
0.85
-178
.947
-0.443
0.90
-196
1.02
.989
0.95
-214
-1.47
.873
1.00
-231
-3.01
.583
1.10
-257
-6.89
.385
1.20
-274
-10.8
.271
1.30
-286
-14.5
1.40
-17.7
-294
.202
1.50
-20.7
-300
.158
1.60
-23.4
-306
.128
1.70
-25.8
-310
.107
1.80
-28.1
-313
.090
-30.2
1.90
-316
.078
-32.2
2.00
-319
.068
-36.7
-324
2.25
.051
-40.6
-328
2.50
.039
-44.1
-331
2.75
.032
3.00
-47.3
-334
.026
3.25
-50.2
-336
.022
3.50
-52.8
-338
.018
4.00
-57.6
-341
.014
5.00
-65.5
-345
.009
-71.9
6.00
-347
.006
-77.3
7.00
-349
.004
-82.0
8.00
-351
.003
-86.1
9.00
-352
.003
-89.8
10.0
-352
.002
Chebychev
Frequency Response
0
Amp (dB)
-20
-40
-60
-80
-100
0.1
2
1.0
2 3 4 5 6 7 8
10.0
Normalized Frequency(f/fc)
3 4 5 6 78
Delay
(Normalized)
2.0
Delay (sec)
1.0
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
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).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
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12
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