D74H4B FREQUENCYDEVICES [Frequency Devices, Inc.], D74H4B Datasheet - Page 5
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D74H4B
Manufacturer Part Number
D74H4B
Description
16 Pin DIP 4-Pole Filters
Manufacturer
FREQUENCYDEVICES [Frequency Devices, Inc.]
Datasheet
1.D74H4B.pdf
(6 pages)
Appendix A
(Hz)
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.85
0.90
0.95
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.25
2.50
2.75
3.00
3.25
3.50
4.00
5.00
6.00
7.00
8.00
9.00
10.0
f/fc
1.Normalized Group Delay:
1784 Chessie Lane, Ottawa, IL 61350 • Tel: 800/252-7074, 815/434-7800 • FAX: 815/434-8176
Theoretical Transfer Characteristics
e-mail: sales@freqdev.com
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 =
-0.00
-0.003
-0.017
-0.072
-0.243
-0.674
-1.047
-1.555
-2.21
-3.01
-4.97
-7.24
-9.62
-12.0
-14.3
-16.4
-18.5
-20.5
-22.3
-24.1
-28.2
-31.8
-35.1
-38.2
-41.0
-43.5
-48.2
-55.9
-62.3
-67.6
-72.2
-76.3
-80.0
Amp
0.00
0.00
0.00
(dB)
Actual Corner Frequency (fc) in Hz
Normalized Delay
Phase
(deg)
-15.0
-30.1
-45.5
-61.4
-78.0
-95.7
-115
-136
-147
-158
-169
-180
-200
-217
-231
-242
-252
-260
-266
-272
-277
-282
-291
-299
-304
-309
-313
-317
-322
-330
-335
-339
-341
-343
-345
0.00
Web Address: http://www.freqdev.com
Delay
(sec)
.416
.418
.423
.433
.449
.474
.511
.558
.604
.619
.622
.612
.588
.513
.427
.350
.289
.241
.204
.175
.152
.134
.119
.091
.072
.059
.049
.041
.035
.027
.017
.012
.009
.007
.005
.004
1
7
-100
-0.0
-20
-40
-60
-80
1.2
1.0
0.8
0.6
0.4
0.2
2.0
1.0
0.0
0
0.1
0.1
0
Frequency Response
Delay (Normalized)
Step Response
0.15
2
1
Normalized Frequency(f/fc)
Normalized Frequency(f/fc)
Low-Pass
4-Pole
Butterworth
2
Normalized Time (1/f sec)
3 4 5 6 78
3
2
4
1.0
5 6 7 8 9
3
2
3 4 5 6 7
1.0
4
1.5
10.0
5