參數(shù)資料
型號(hào): FS781BT
英文描述: MISCELLANEOUS CLOCK GENERATOR|TSSOP|8PIN|PLASTIC
中文描述: 雜項(xiàng)時(shí)鐘發(fā)生器| TSSOP封裝| 8引腳|塑料
文件頁(yè)數(shù): 7/13頁(yè)
文件大?。?/td> 103K
代理商: FS781BT
LOW EMI SPECTRUM SPREAD CLOCK
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07029 Rev. **
05/07/2001
Page 7 of 13
APPROVED
PRODUCT
FS781/82/84
FS781/2/4 Recommended Loop Filter Values.
C7 (pF.) @ +5.0 VDC +/- 5% (R6 = 3.3K)
Input
(MHz)
1
0
(note 3)
6
0
0
1140
8
0
0
1170
10
0
0
1030
12
0
0
760
14
0
0
450
16
0
1
2490
S
S
BW = 1.0%
BW = 1.5%
(note 3)
1030
970
660
340
240
970
BW = 2.0%
(note 3)
930
740
430
230
180
730
BW = 2.5%
(note 3)
830
570
350
200
140
590
BW = 3.0%
(note 3)
710
460
280
180
100
480
BW = 3.5%
(note 3)
610
400
210
160
70
430
BW = 4.0%
(note 3)
510
280
130
130
50
370
20
22
24
26
28
30
32
0
0
0
0
0
0
1
1
1
1
1
1
1
0
1360
990
820
530
430
250
Note 4.
680
560
360
270
230
200
1000
480
330
250
210
180
150
740
370
260
200
170
150
110
570
280
230
180
150
110
100
470
190
200
160
110
100
90
410
250
190
150
90
90
80
370
36
38
40
42
44
46
48
50
52
54
56
58
60
62
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Note 4.
Note 4.
Note 4.
1030
790
1110
1110
830
560
510
470
450
430
Note 4.
970
880
800
680
560
420
280
330
340
280
210
220
240
800
670
560
460
360
260
280
200
200
205
180
160
250
120
580
480
380
290
260
220
210
190
180
170
140
120
110
90
430
380
310
240
220
200
180
170
160
140
110
100
90
80
330
310
270
230
200
190
170
140
130
120
110
90
80
80
250
230
220
220
190
170
140
120
110
90
90
90
80
70
180
66
68
70
72
74
76
78
80
82
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Note 4.
Note 4.
Note 4.
Note 4.
Note 4.
Note 4.
Note 4.
Note 4.
Note 4.
630
690
650
575
500
550
600
570
540
400
365
330
340
355
330
290
240
250
320
285
250
250
245
230
220
210
200
240
225
210
210
205
200
190
185
180
150
170
190
190
180
175
170
165
160
100
140
180
170
165
160
155
150
140
Notes:
1. If the value selected from the above chart is not a standard value, use the next available larger value.
2. All bandwidths indicated are total peak-to-peak spread. 1% = +0.5% to
0.5%. 4% = +2.0% to
2.0%.
3.
If C8 is not listed in the chart for a particular BW and Freq., it is not used in the loop filter.
4.
Contact Factory for these Loop Filter values and bandwidths less than 1.0%.
Table 8
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