824L8B Datasheet, PDF (10/13 Pages) List of Unclassifed Manufacturers – 2 X 2 4-Pole Filters

Low-Pass
Appendix A
4-Pole, 0.5 dB Ripple
Chebychev
Theoretical Transfer Characteristics
f/fc
Amp Phase Delay1
(Hz) (dB) (deg) (sec)
0.00 0.00
0.00 .476
0.10 0.087 -17.3 .492
0.20 0.295 -35.7 .533
0.30 0.474 -55.7 .577
0.40 0.463 -76.9 .596
0.50 0.248 -98.2 .583
0.60
0.025 -119
.578
0.70
0.072 -141
.647
0.80
0.432 -168
.881
0.85
0.482 -185
1.06
0.90
0.062 -205
1.18
Frequency Response
0
-20
-40
-60
-80
-100
0.1
2 3 4 5 6 78 _1.0 2 3 4 5 6 78_10.0
Normalized Frequency(f/fc)
0.95 -1.12 -226
1.13
1.00 -3.01 -245
.946
1.10 -7.61 -272
.559
1.20 -12.0 -288
.345
1.30 -15.9 -298
.235
Delay (Normalized)
2.0
1.40 -19.3 -305
.173
1.50 -22.4 -311
.134
1.60 -25.1 -315
.108
1.70 -27.6 -318
.089
1.80 -29.9 -321
.075
1.0
1.90 -32.1 -324
.065
2.00 -34.1 -326
.057
2.25 -38.6 -301
.042
2.50 -42.6 -334
.033
2.75 -46.1 -336
.026
3.00 -49.3 -339
.021
3.25 -52.2 -340
.018
3.50 -54.9 -342
.015
4.00 -59.7 -344
.011
5.00 -67.6 -347
.007
0.0
0.1
0.15
2
3 4 5 6 7 8 9_1.0 1.5
Normalized Time (1/f sec)
Step Response
6.00 -74.0 -350
.005
1.2
7.00 -79.4 -351
.004
8.00 -84.1 -352
.003
1.0
9.00 -88.2 -353
.002
10.0 -91.9 -354
.002
0.8
0.6
0.4
0.2
1.Normalized Group Delay:
-0.0
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).
0
1
2
3
4
5
Normalized Time (1/f sec)
Normalized Delay
Actual Delay =
Actual Corner Frequency (fc) in Hz
15
25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :[phone] ∑FAX:[phone]
e-mail: [e-mail] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178