ICS843252AG 查看數據表（PDF） - Integrated Circuit Systems
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ICS843252AG Datasheet PDF : 15 Pages
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Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843252
FEMTOCLOCKS™CRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER
TABLE 3A. BANK A FREQUENCY TABLE
Inputs
Crystal Frequency
(MHz)
25
25
20
22.5
25
24
20
19.44
19.44
15.625
18.75
19.44
18.75
15.625
FB_SEL
0
0
0
0
0
0
0
1
1
1
1
1
1
1
SELA1
0
0
0
1
1
1
1
0
0
0
1
1
1
1
SELA0
0
1
1
0
1
1
1
0
1
1
0
1
1
1
Feedback
Divider
Bank A
Output Divider
M/N
Multiplication
Factor
25
1
25
25
2
12.5
25
2
12.500
25
3
8.333
25
4
6.25
25
4
6.25
25
4
6.25
32
1
32
32
2
16
32
2
16
32
3
10.667
32
4
8
32
4
8
32
4
8
QA/nQA
Output
Frequency
(MHz)
625
312.5
250
187.5
156.25
150
125
622.08
311.04
250
200
155.52
150
125
843252AG
www.icst.com/products/hiperclocks.html
3
REV. A NOVEMBER 9, 2005
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