IMIFS781BZB Cypress Semiconductor Corp, IMIFS781BZB Datasheet - Page 3

• Manufacturer Part Number: IMIFS781BZB
• Description: IC CLOCK SPREAD SPECTRUM
• Manufacturer: Cypress Semiconductor Corp

Specifications of IMIFS781BZB

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Document #: 38-07029 Rev. *F
Table 2. FS781/82/84 Recommended Loop Filter Values C7 (pF) @ +3.3 VDC ±5% (R6 = 3.3K)
Input MHz S1
Notes:
1. If the value selected from the above chart is not a standard, use the next available larger value.
2. All bandwidths indicated above 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 bandwidth and frequency, it is not used in the loop filter.
4. Contact Cypress for LF values less than 1.0% bandwidth.
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
65
66
68
70
72
74
76
78
80
82
6
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
S0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
BW = 1.0%
10,000/1000
10,000/330
10000
10000
1040
1200
1000
2200
1500
1000
1180
1180
1180
1180
1120
1160
1110
830
580
960
920
660
470
470
330
960
940
950
900
790
660
470
470
445
430
295
270
910
900
900
[3]
BW = 1.5%
1550
990
680
420
230
980
750
730
640
400
300
230
180
170
860
820
690
600
620
680
580
440
360
325
270
250
210
185
220
860
850
760
750
740
780
770
720
670
620
540
[3]
BW = 2.0%
910
820
460
300
200
760
580
470
410
250
220
180
140
120
640
620
520
420
380
400
270
260
250
220
200
185
165
150
150
560
540
560
500
470
470
470
440
270
260
250
[3]
BW = 2.5%
780
640
360
220
160
580
470
390
270
210
180
150
120
100
520
470
410
340
275
250
220
210
190
185
170
150
130
120
120
410
400
350
320
370
300
280
240
210
210
210
[3]
BW = 3.0%
700
520
300
200
140
470
415
320
230
180
150
130
100
430
400
340
280
230
210
190
180
170
155
140
120
100
100
100
340
330
260
260
300
250
230
210
190
190
190
82
[3]
[1, 2, 3, 4]
BW = 3.5%
640
450
240
190
100
410
370
220
200
160
140
100
380
330
290
220
210
190
180
160
150
135
130
290
280
220
230
240
220
210
190
170
170
170
80
68
85
65
90
82
FS781/82/84
[3]
BW = 4.0%
Page 3 of 12
560
400
210
170
385
300
190
180
150
120
330
290
240
160
180
170
165
140
140
120
100
230
220
210
210
170
190
190
170
160
156
150
80
70
60
47
47
33
82
68
[3]
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