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| 型號： | AD9510-VCO/PCBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 30/56頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR AD9510 |
| 設(shè)計資源： | AD9510 Eval Brd BOM AD9510 Eval Brd Schematics AD9510 Gerber Files |
| 標準包裝： | 1 |
| 主要目的： | 計時，時鐘分配 |
| 已用 IC / 零件： | AD9510 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | AD9510BCPZ-ND - IC CLOCK DIST 8OUT PLL 64LFCSP AD9510BCPZ-REEL7-ND - IC CLOCK DIST 8OUT PLL 64LFCSP |
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AD9510
Data Sheet
Rev. B | Page 36 of 56
Divider Phase Offset
The phase of each output can be selected, depending on the
divide ratio chosen. This is selected by writing the appropriate
values to the registers which set the phase and start high/low bit
for each output. These are the odd numbered registers from
Register 0x49 to Register 0x57. Each divider has a 4-bit phase
offset [3:0] and a start high or low bit [4].
Following a sync pulse, the phase offset word determines how
many fast clock (CLK1 or CLK2) cycles to wait before initiating
a clock output edge. The Start H/L bit determines if the divider
output starts low or high. By giving each divider a different
phase offset, output-to-output delays can be set in increments of
the fast clock period, tCLK.
Figure 39 shows four dividers, each set for DIV = 4, 50% duty
cycle. By incrementing the phase offset from 0 to 3, each output
is offset from the initial edge by a multiple of tCLK.
Figure 39. Phase Offset—All Dividers Set for DIV = 4, Phase Set from 0 to 3
For example:
CLK1 = 491.52 MHz
tCLK1 = 1/491.52 = 2.0345 ns
For DIV = 4
Phase Offset 0 = 0 ns
Phase Offset 1 = 2.0345 ns
Phase Offset 2 = 4.069 ns
Phase Offset 3 = 6.104 ns
The four outputs can also be described as:
OUT1 = 0°
OUT2 = 90°
OUT3 = 180°
OUT4 = 270°
Setting the phase offset to Phase = 4 results in the same relative
phase as the first channel, Phase = 0° or 360°.
In general, by combining the 4-bit phase offset and the Start
H/L bit, there are 32 possible phase offset states (see Table 19).
Table 19. Phase Offset—Start H/L Bit
Phase Offset
(Fast Clock
Rising Edges)
Address 0x49 to Address 0x57
Phase Offset[3:0]
Start H/L[4]
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
10
0
11
0
12
0
13
0
14
0
15
0
16
0
1
17
1
18
2
1
19
3
1
20
4
1
21
5
1
22
6
1
23
7
1
24
8
1
25
9
1
26
10
1
27
11
1
28
12
1
29
13
1
30
14
1
31
15
1
The resolution of the phase offset is set by the fast clock period
(tCLK) at CLK1 or CLK2. As a result, every divide ratio does not
have 32 unique phase offsets available. For any divide ratio, the
number of unique phase offsets is numerically equal to the
divide ratio (see Table 19):
DIV = 4
Unique Phase Offsets Are Phase = 0, 1, 2, 3
DIV= 7
Unique Phase Offsets Are Phase = 0, 1, 2, 3, 4, 5, 6
DIV = 18
Unique Phase Offsets Are Phase = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17
05046-035
CLOCK INPUT
CLK
DIVIDER OUTPUTS
DIV = 4, DUTY = 50%
START = 0,
PHASE = 0
START = 0,
PHASE = 1
START = 0,
PHASE = 2
START = 0,
PHASE = 3
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
tCLK
2
× t
CLK
3
× t
CLK
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相關(guān)代理商/技術(shù)參數(shù) |
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| AD9511 | 制造商:AD 制造商全稱:Analog Devices 功能描述:1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Five Outputs |
| AD9511/PCB | 制造商:Analog Devices 功能描述:1.2 GHZ CLOCK DISTRIBUTION IC, PLL CORE,DIVIDERS, DELAY ADJUST, FIVE OUTPUTS 制造商:Analog Devices 功能描述:EVAL BD FOR AD9511 1.2 GHZ CLOCK DISTRIBUTION IC, PLL CORE,D - Bulk |
| AD9511BCPZ | 功能描述:IC CLOCK DIST 5OUT PLL 48LFCSP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:1,000 系列:Precision Edge® 類型:時鐘/頻率合成器 PLL:無 輸入:CML，PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?（3x3） 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND |
| AD9511BCPZ-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Five Outputs |
| AD9511BCPZ-REEL7 | 功能描述:IC CLOCK DIST 5OUT PLL 48LFCSP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:2,000 系列:- 類型:PLL 時鐘發(fā)生器 PLL:帶旁路 輸入:LVCMOS，LVPECL 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:2:11 差分 - 輸入:輸出:是/無 頻率 - 最大:240MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:32-LQFP 供應(yīng)商設(shè)備封裝:32-TQFP（7x7） 包裝:帶卷 (TR) |
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