Low-Pass
6-Pole
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.00
0.00
0.00
.615
0.10
0.00
-22.2
.617
0.20
0.00
-44.5
.624
0.30
0.00
-67.2
.637
0.40
0.00
-90.4
.656
0.50
-0.001
-115
.685
0.60
-0.009
-140
.731
0.70
-0.060
-167
.803
0.80
-0.289
-198
.911
0.85
-0.578
-215
.970
0.90
-1.080
-233
1.02
0.95
-1.88
-252
1.03
1.00
-3.01
-270
1.00
1.10
-6.17
-304
.845
1.20
-9.96
-331
.660
1.30
-13.9
-352
.518
1.40
-17.6
-368
.417
1.50
-21.2
-382
.345
1.60
-24.5
-393
.291
1.70
-27.7
-403
.251
1.80
-30.6
-412
.219
1.90
-33.5
-419
.193
2.00
-36.1
-425
.171
2.25
-42.3
-439
.132
2.50
-47.8
-450
.105
2.75
-52.7
-458
.086
3.00
-57.3
-465
.071
3.25
-61.4
-471
.060
3.50
-65.3
-476
.052
4.00
-72.2
-484
.039
5.00
-83.9
-496
.025
6.00
-503
.017
-93.4
7.00
-508
.012
-101
8.00
-512
.0097
-108
9.00
-515
.0076
-115
10.0
-518
.0062
-120
Butterworth
Frequency Response
0
Amp (dB)
-20
-40
-60
-80
-100
0.1
2
1.0
2 3 4 5 6 7
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
3
4
5 6 7 89
Normalized Time (1/f sec)
1.0
1.5
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).
Normalized Delay
Actual Delay =
Actual Corner Frequency (fc) in Hz
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8
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