D01L8B Datasheet, PDF (6/10 Pages) Frequency Devices, Inc. – 32-Pin DIP 8-, 6-, 4-Pole Filters

Low-Pass
Appendix A
6-Pole
Bessel
Theoretical Transfer Characteristics
f/fc
Amp Phase Delay1
(Hz) (dB) (deg) (sec)
0.00 0.00
0.00 .430
0.10 -0.029 -15.5 .430
0.20 -0.116 -31.0 .430
0.30 -0.261 -46.5 .430
0.40 -0.465 -62.0 .430
0.50 -0.728 -77.4 .430
0.60 -1.05 -92.9 .430
0.70 -1.44
-108
.430
0.80 -1.89
-124
.430
0.85 -2.15
-132
.430
0.90 -2.42
-139
.430
Frequency Response
0
-20
-40
-60
-80
-100
0.1
2 3 4 56781.0 2 3 4 567 _10.0
Normalized Frequency(f/fc)
0.95 -2.70 -147
.430
1.00 -3.01 -155
.430
1.10 -3.68 -170
.429
1.20 -4.44 -186
.428
1.30 -5.29 -201
.426
Delay (Normalized)
1.0
1.40 -6.23 -216
.422
1.50 -7.29 -232
.416
1.60 -8.46 -246
.401
1.70 -9.74 -261
.393
1.80 -11.1 -275
.376
0.5
1.90 -12.6 -287
.357
2.00 -14.2 -300
.335
2.25 -18.3 -328
.279
2.50 -22.6 -351
.228
2.75 -26.7 -369
187
3.00 -30.7 -385
.156
3.25 -34.5 -398
.131
3.50 -38.1 -408
.111
4.00 -44.7 -426
.083
5.00 -55.9 -449
.052
6.00 -65.2 -465
.036
7.00 -73.2 -476
.026
8.00 -80.1 -484
.020
9.00 -86.2 -490
.015
10.0 -91.6 -495
.013
0.0
0.1 ^{0.15 2 3 4 5 6 7 8 91.0 1.5}
Normalized Time (1/f sec)
Step Response
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
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
-0.2
0
1
2
3
4
5
by the actual corner frequency (fc).
Normalized Delay
Actual Delay =
Actual Corner Frequency (fc) in Hz
Normalized Time (1/f sec)
3
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