The AD9513 requires a 3.3 V ± 5% power supply for VS
參數(shù)資料
型號: AD9513BCPZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 15/28頁
文件大?。?/td> 0K
描述: IC CLOCK DIST 3OUT PLL 32LFCSP
標(biāo)準(zhǔn)包裝: 1,500
類型: 扇出緩沖器(分配),除法器
PLL:
輸入: 時鐘
輸出: CMOS,LVDS
電路數(shù): 1
比率 - 輸入:輸出: 1:3
差分 - 輸入:輸出: 是/是
頻率 - 最大: 800MHz
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: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ(5x5)
包裝: 帶卷 (TR)
配用: AD9513/PCBZ-ND - BOARD EVAL FOR AD9513
AD9513
Rev. 0 | Page 22 of 28
POWER SUPPLY
The AD9513 requires a 3.3 V ± 5% power supply for VS. The
tables in the Specifications section give the performance
expected from the AD9513 with the power supply voltage
within this range. In no case should the absolute maximum
range of 0.3 V to +3.6 V, with respect to GND, be exceeded
on Pin VS.
Good engineering practice should be followed in the layout of
power supply traces and the ground plane of the PCB. The
power supply should be bypassed on the PCB with adequate
capacitance (>10 μF). The AD9513 should be bypassed with
adequate capacitors (0.1 μF) at all power pins as close as
possible to the part. The layout of the AD9513 evaluation
board (AD9513/PCB) is a good example.
Exposed Metal Paddle
The exposed metal paddle on the AD9513 package is an
electrical connection, as well as a thermal enhancement. For
the device to function properly, the paddle must be properly
attached to ground (GND).
The exposed paddle of the AD9513 package must be soldered
down.
The AD9513 must dissipate heat through its exposed
paddle. The PCB acts as a heat sink for the AD9513. The PCB
attachment must provide a good thermal path to a larger heat
dissipation area, such as a ground plane on the PCB. This
requires a grid of vias from the top layer down to the ground
plane (see Figure 28).The AD9513 evaluation board
(AD9513/PCB)provides a good example of how the part
should be attached to the PCB.
0
559
5-
035
VIAS TO GND PLANE
Figure 28. PCB Land for Attaching Exposed Paddle
POWER MANAGEMENT
In some cases, the AD9513 can be configured to use less power
by turning off functions that are not being used.
The power-saving options include the following:
A divider is powered down when set to divide = 1
(bypassed).
Adjustable delay block on OUT2 is powered down when in
off mode (S0 = 0).
An unneeded output can be powered down (see Table 12).
This also powers down the divider for that output.
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