參數(shù)資料
型號: AD9510BCPZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 27/56頁
文件大?。?/td> 0K
描述: IC CLOCK DIST 8OUT PLL 64LFCSP
標準包裝: 750
類型: 扇出緩沖器(分配),除法器
PLL:
輸入: 時鐘
輸出: CMOS,LVDS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 2:8
差分 - 輸入:輸出: 是/是
頻率 - 最大: 1.2GHz
除法器/乘法器: 是/無
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 64-LFCSP-VQ(9x9)
包裝: 帶卷 (TR)
配用: AD9510-VCO/PCBZ-ND - BOARD EVALUATION FOR AD9510
AD9510/PCBZ-ND - BOARD EVALUATION FOR AD9510
Data Sheet
AD9510
Rev. B | Page 33 of 56
Example 1:
Set the Divide Ratio = 2
HIGH_CYCLES = 0
LOW_CYCLES = 0
Divide Ratio = (0 + 1) + (0 + 1) = 2
Example 2:
Set Divide Ratio = 8
HIGH_CYCLES = 3
LOW_CYCLES = 3
Divide Ratio = (3 + 1) + (3 + 1) = 8
Note that a Divide Ratio of 8 can also be obtained by setting:
HIGH_CYCLES = 2
LOW_CYCLES = 4
Divide Ratio = (2 + 1) + (4 + 1) = 8
Although the second set of settings produces the same divide
ratio, the resulting duty cycle is not the same.
Setting the Duty Cycle
The duty cycle and the divide ratio are related. Different
divide ratios have different duty cycle options. For example, if
Divide Ratio = 2, the only duty cycle possible is 50%. If the
Divide Ratio = 4, the duty cycle can be 25%, 50%, or 75%.
The duty cycle is set by
Duty Cycle = (HIGH_CYCLES + 1)/((HIGH_CYCLES + 1)
+ (LOW_CYCLES + 1))
See Table 18 for the values for the available duty cycles for each
divide ratio.
Table 18. Duty Cycle and Divide Ratio
Divide Ratio
Duty Cycle (%)
Address 0x48 to
Address 0x56
LO[7:4]
HI[3:0]
2
50
0
3
67
0
1
3
33
1
0
4
50
1
4
75
0
2
4
25
2
0
5
60
1
2
5
40
2
1
5
80
0
3
5
20
3
0
6
50
2
6
67
1
3
6
33
3
1
6
83
0
4
6
17
4
0
7
57
2
3
7
43
3
2
7
71
1
4
7
29
4
1
7
86
0
5
7
14
5
0
8
50
3
8
63
2
4
8
38
4
2
8
75
1
5
8
25
5
1
8
88
0
6
8
13
6
0
9
56
3
4
9
44
4
3
9
67
2
5
Divide Ratio
Duty Cycle (%)
Address 0x48 to
Address 0x56
LO[7:4]
HI[3:0]
9
33
5
2
9
78
1
6
9
22
6
1
9
89
0
7
9
11
7
0
10
50
4
10
60
3
5
10
40
5
3
10
70
2
6
10
30
6
2
10
80
1
7
10
20
7
1
10
90
0
8
10
8
0
11
55
4
5
11
45
5
4
11
64
3
6
11
36
6
3
11
73
2
7
11
27
7
2
11
82
1
8
11
18
8
1
11
91
0
9
11
9
0
12
50
5
12
58
4
6
12
42
6
4
12
67
3
7
12
33
7
3
12
75
2
8
12
25
8
2
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