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參數(shù)資料
| 型號： | AD9522-5BCPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 32/76頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK GEN 2.4GHZ 64LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 時鐘發(fā)生器，扇出配送 |
| PLL： | 是 |
| 輸入： | CMOS，LVDS，LVPECL |
| 輸出： | CMOS，LVDS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 2:12，2:24 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 2.4GHz |
| 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： | 托盤 |
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AD9522-5
Rev. 0 | Page 38 of 76
MODE 1 (CLOCK DISTRIBUTION MODE)
DISTRIBUTION
CLOCK
MODE 2 (HF CLOCK DISTRIBUTION MODE)
CLK
0
1
DIVIDE BY 1,
2, 3, 4, 5, OR 6
CLOCK
DISTRI-
BUTION
PLL
CLK
0
1
DIVIDE BY 1,
2, 3, 4, 5, OR 6
CLOCK
DISTRI-
BUTION
PLL
DISTRIBUTION
CLOCK
07
24
0-
0
54
Figure 37. Simplified Diagram of the Two Clock Distribution Operation Modes
CLOCK DISTRIBUTION
A clock channel consists of three LVDS clock outputs or six
CMOS clock outputs that share a common divider. A clock
output consists of the drivers that connect to the output pins.
The clock outputs have either LVDS or CMOS at the pins.
The AD9522 has four clock channels. Each channel has its own
programmable divider that divides the clock frequency applied
to its input. The channel dividers can divide by any integer
from 1 to 32.
The AD9522 features a VCO divider that divides the VCO output
by 1, 2, 3, 4, 5, or 6 before going to the individual channel dividers.
The VCO divider has two purposes. The first is to limit the
maximum input frequency of the channel dividers to 1.6 GHz.
The other is to allow the AD9522 to generate even lower
frequencies than would be possible with only a simple post divider.
The channel dividers allow for a selection of various duty cycles,
depending on the currently set division. That is, for any specific
division, D, the output of the divider can be set to high for N + 1
input clock cycles and low for M + 1 input clock cycles (where
D = N + M + 2). For example, a divide-by-5 can be high for one
divider input cycle and low for four cycles, or a divide-by-5 can
be high for three divider input cycles and low for two cycles.
Other combinations are also possible.
The channel dividers include a duty-cycle correction function
that can be disabled. In contrast to the selectable duty cycle
just described, this function can correct a non-50% duty cycle
caused by an odd division. However, this requires that the
division be set by M = N + 1.
In addition, the channel dividers allow a coarse phase offset or
delay to be set. Depending on the division selected, the output
can be delayed by up to 15 input clock cycles. For example, if
the frequency at the input of the channel divider is 1 GHz, the
channel divider output can be delayed by up to 15 ns. The
divider outputs can also be set to start high or to start low.
Operation Modes
The AD9522-5 has two clock distribution operating modes that
are shown in Figure 37.
It is not necessary to use the VCO divider if the CLK frequency
is less than the maximum channel divider input frequency
(1600 MHz); otherwise, the VCO divider must be used to
reduce the frequency going to the channel dividers.
Table 26 shows how the operation modes are selected. 0x1E1[0]
selects the channel divider source.
Table 26. Operation Modes
Mode
0x1E1[0]
VCO Divider
2
0
Used
1
Not used
Clock Frequency Division
The total frequency division is a combination of the VCO
divider (when used) and the channel divider. When the VCO
divider is used, the total division from the CLK input to the
output is the product of the VCO divider (1, 2, 3, 4, 5, or 6)
and the division of the channel divider. Table 27 indicates how
the frequency division for a channel is set.
Table 27. Frequency Division
Channel Divider
Setting
Resulting Frequency
Division
1 to 6
2 to 32
(1 to 6) × (2 to 32)
2 to 6
Bypass
(2 to 6) × (1)
1
Bypass
Output static (illegal state)
VCO divider
bypassed
Bypass
1
VCO divider
bypassed
2 to 32
1 The bypass VCO divider (0x1E1[0] = 1) is not the same as VCO divider = 1.
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| AD9522-5BCPZ-REEL7 | 功能描述:IC CLOCK GEN 2.4GHZ 64LFCSP 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(biāo)準(zhǔn)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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| AD9523-1/PCBZ | 功能描述:BOARD EVAL FOR AD9523-1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
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