參數(shù)資料
型號(hào)： AD9518-4ABCPZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 31/64頁(yè)
文件大小： 0K
描述： IC CLOCK GEN 6CH 1.8GHZ 48LFCSP
標(biāo)準(zhǔn)包裝： 1
類型： 時(shí)鐘發(fā)生器，扇出配送
PLL： 是
輸入： CMOS，LVDS，LVPECL
輸出： LVPECL
電路數(shù)： 1
比率 - 輸入:輸出： 1:6
差分 - 輸入:輸出： 是/是
頻率 - 最大： 1.8GHz
除法器/乘法器： 是/無(wú)
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： 48-VFQFN 裸露焊盤(pán)，CSP
供應(yīng)商設(shè)備封裝： 48-LFCSP-VQ（7x7）
包裝： 托盤(pán)
Data Sheet
AD9518-4
Rev. B | Page 37 of 64
Synchronizing the Outputs—Sync Function
The most common way to execute the sync function is to use
the SYNC pin to do a manual synchronization of the outputs.
This requires a low-going signal on the SYNC pin, which is held
low and then released when synchronization is desired. The
timing of the sync operation is shown in
(using the
VCO divider) and
(VCO divider not used). There is
an uncertainty of up to one cycle of the clock at the input to the
channel divider due to the asynchronous nature of the SYNC
signal with respect to the clock edges inside the
. The
delay from the
SYNC rising edge to the beginning of synchronized
output clocking is between 14 and 15 cycles of clock at the channel
divider input, plus either one cycle of the VCO divider input
(see
), or one cycle of the channel divider input (see
), depending on whether the VCO divider is used.
Cycles are counted from the rising edge of the signal.
The AD9518 clock outputs can be synchronized to each other.
Outputs can be individually excluded from synchronization.
Synchronization consists of setting the nonexcluded outputs to
a preset set of static conditions and subsequently releasing these
outputs to continue clocking at the same instant with the preset
conditions applied. This allows for the alignment of the edges of
two or more outputs or for the spacing of edges according to the
coarse phase offset settings for two or more outputs.
Output synchronization is executed in several ways, as follows:
By forcing the SYNC pin low, then releasing it (manual sync).
By setting, then resetting, any one of the following three bits:
the soft sync bit (Register 0x230[0]), the soft reset bit
(Register 0x000[2] [mirrored]), and the power-down
distribution reference bit (Register 0x230[1]).
Another common way to execute the sync function is by setting
and resetting the soft sync bit at Register 0x230[0] (see Table 43
through Table 49 for details). Both the setting and resetting
of the soft sync bit require an update all registers operation
(Register 0x232[0] = 1) to take effect.
By executing synchronization of the outputs as part of the
chip power-up sequence.
By forcing the RESET pin low, then releasing it (chip reset).
By forcing the PD pin low, then releasing (chip power-down).
Following completion of a VCO calibration. An internal
SYNC signal is automatically asserted at the beginning of
a VCO calibration, then released upon its completion.
1
2
34
56
7
8
910
INPUT TO VCO DIVIDER
INPUT TO CHANNEL DIVIDER
OUTPUT OF
CHANNEL DIVIDER
SYNC PIN
1
11
12
13
14
14 TO 15 CYCLES AT CHANNEL DIVIDER INPUT + 1 CYCLE AT VCO DIVIDER INPUT
CHANNEL DIVIDER OUTPUT STATIC
CHANNEL DIVIDER
OUTPUT CLOCKING
CHANNEL DIVIDER
OUTPUT CLOCKING
06
433
-0
73
Figure 41. SYNC Timing When VCO Divider Is Used—CLK or VCO Is Input
INPUT TO CLK
IINPUT TO CHANNEL DIVIDER
OUTPUT OF
CHANNEL DIVIDER
SYNC PIN
14 TO 15 CYCLES AT CHANNEL DIVIDER INPUT + 1 CYCLE AT CLK INPUT
12
3
4
5
6
7
8
910
11
12
13
14
1
CHANNEL DIVIDER OUTPUT STATIC
CHANNEL DIVIDER
OUTPUT CLOCKING
CHANNEL DIVIDER
OUTPUT CLOCKING
0
643
3-
07
4
Figure 42. SYNC Timing When VCO Divider Is Not Used—CLK Input Only
相關(guān)PDF資料
PDF描述
SM843256KA IC SYNTHESIZER LVPECL 24TSSOP
V110A36H300BG3 CONVERTER MOD DC/DC 36V 300W
VI-B4W-MV CONVERTER MOD DC/DC 5.5V 150W
V110A36H300BG2 CONVERTER MOD DC/DC 36V 300W
VE-B2Z-MW-F2 CONVERTER MOD DC/DC 2V 40W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9518-4ABCPZ-RL7 功能描述:IC CLOCK GEN 6CH 1.8GHZ 48LFCSP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:PLL 時(shí)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(wú) 頻率 - 最大:240MHz 除法器/乘法器:是/無(wú) 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)
AD9518-4A-PCBZ 制造商:AD 制造商全稱:Analog Devices 功能描述:6-Output Clock Generator with Integrated 1.6 GHz VCO
AD9518-4BCPZ 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
AD9518-4BCPZ-REEL7 制造商:Analog Devices 功能描述:
AD9520 制造商:AD 制造商全稱:Analog Devices 功能描述:Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*