Low-Pass
2-Pole
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.00
0.00
0.00
.217
0.10
-0.027
-7.79
.216
-0.108
0.20
-15.6
.216
-0.248
0.30
-23.4
.216
-0.448
0.40
-31.1
.215
.212
-0.712
0.50
-38.8
-1.044
-46.4
.208
0.60
-1.443
-53.8
.202
0.70
-1.907
-60.9
.195
0.80
-2.161
-64.4
.190
0.85
-2.430
.185
-67.7
0.90
0.95
-2.71
-71.0
.180
1.00
-3.01
-74.2
.175
1.10
-3.63
-80.3
.164
1.20
-4.28
-86.0
.153
.141
1.30
-4.95
-91.3
1.40
-5.65
-96.2
.130
1.50
-6.35
-101
.120
1.60
-7.05
-105
.110
-7.75
.101
1.70
-109
-8.44
.093
1.80
-112
1.90
-9.13
-115
.085
2.00
-9.80
-118
.079
-11.4
2.25
-125
.064
-12.9
2.50
-130
.053
-14.4
2.75
-134
.045
3.00
-15.7
-138
.038
3.25
-17.0
-141
.033
3.50
-18.2
-144
.028
4.00
-20.3
-148
.022
.014
5.00
-24.0
-155
6.00
-27.1
-159
.010
7.00
-29.7
-162
.007
8.00
-32.0
-164
.005
9.00
-34.1
-166
.004
-35.9
10.0
-167
.004
Bessel
Frequency Response
0
Amp (dB)
-20
-40
-60
-80
0.1
2 3 4 56781.0
2 3 4 567 10.0
Normalized Frequency(f/fc)
Delay
(Normalized)
0.5
Delay (sec)
0.4
0.3
0.2
0.1
0.0
3 4 5 6 7 89
0.1 0.15 2
1.0 1.5
Normalized Frequency(f/fc)
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
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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