Cypress Semiconductor FS781, Specification Sheet, Page: 4 / 12

FS781/82/84
Document #: 38-07029 Rev. *F Page 4 of 12
Table 3. FS781/82/84 Recommended Loop Filter Values C7 (pF) @ +5.0 VDC ±5% (R6 = 3.3K)
[1, 2, 3, 4]
Input MHz S1 S0 BW = 1.0%
[3]
BW = 1.5%
[3]
BW = 2.0%
[3]
BW = 2.5%
[3]
BW = 3.0%
[3]
BW = 3.5%
[3]
BW = 4.0%
[3]
6 0 0 1140 1030 930 830 710 610 510
8 0 0 1170 970 740 570 460 400 280
10 0 0 1030 660 430 350 280 210 130
12 0 0 760 340 230 200 180 160 130
14 0 0 450 240 180 140 100 70 50
16 0 1 2490 970 730 590 480 430 370
18 0 1 2490 870 650 510 430 370 310
20 0 1 1360 680 480 370 280 190 250
22 0 1 990 560 330 260 230 200 190
24 0 1 820 360 250 200 180 160 150
26 0 1 530 270 210 170 150 110 90
28 0 1 430 230 180 150 110 100 90
30 0 1 250 200 150 110 100 90 80
32 1 0 Note 4 1000 740 570 470 410 370
34 1 0 Note 4 990 710 520 420 360 300
36 1 0 Note 4 970 670 480 380 310 230
38 1 0 Note 4 880 560 380 310 270 220
40 1 0 Note 4 800 460 290 240 230 220
42 1 0 1030 680 360 260 220 200 190
44 1 0 790 560 260 220 200 190 170
46 1 0 1110 420 280 210 180 170 140
48 1 0 1110 280 200 190 170 140 120
50 1 0 830 330 200 180 160 130 110
52 1 0 560 340 205 170 140 120 90
54 1 0 510 280 180 140 110 110 90
56 1 0 470 210 160 120 100 90 90
58 1 0 450 220 250 110 90 80 80
60 1 0 430 240 120 90 80 80 70
62 1 1 Note 4 800 580 430 330 250 180
64 1 1 Note 4 720 490 375 285 200 140
66 1 1 Note 4 630 400 320 240 150 100
68 1 1 Note 4 690 365 285 225 170 140
70 1 1 Note 4 650 330 250 210 190 180
72 1 1 Note 4 575 340 250 210 190 170
74 1 1 Note 4 500 355 245 205 180 165
76 1 1 Note 4 550 330 230 200 175 160
78 1 1 Note 4 600 290 220 190 170 155
80 1 1 Note 4 570 240 210 185 165 150
82 1 1 Note 4 540 250 200 180 160 140
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