參數(shù)資料
型號: AD9985BSTZ-110
廠商: ANALOG DEVICES INC
元件分類: 其它接口
英文描述: 110 MSPS/140 MSPS Analog Interface for Flat Panel Displays
中文描述: SPECIALTY INTERFACE CIRCUIT, PQFP80
封裝: LEAD FREE, MS-026BEC, LQFP-80
文件頁數(shù): 30/32頁
文件大小: 349K
代理商: AD9985BSTZ-110
AD9985
PLL
Place the PLL loop filter components as close to the FILT pin as
possible.
Rev. 0 | Page 30 of 32
Do not place any digital or other high frequency traces near
these components.
Use the values suggested in the data sheet with 10% tolerances
or less.
OUTPUTS (BOTH DATA AND CLOCKS)
Try to minimize the trace length that the digital outputs have to
drive. Longer traces have higher capacitance, which requires
more current, which causes more internal digital noise.
Shorter traces reduce the possibility of reflections.
Adding a series resistor of value 22 to 100 can suppress
reflections, reduce EMI, and reduce the current spikes inside of
the AD9985. However, if 50 traces are used on the PCB, the
data outputs should not need resistors. A 22 resistor on the
DATACK output should provide good impedance matching
that will reduce reflections. If series resistors are used, place
them as close to the AD9985 pins as possible (although try not
to add vias or extra length to the output trace in order to get the
resistors closer).
If possible, limit the capacitance that each of the digital outputs
drives to less than 10 pF. This can easily be accomplished by
keeping traces short and by connecting the outputs to only one
device. Loading the outputs with excessive capacitance will
increase the current transients inside of the AD9985, creating
more digital noise on its power supplies.
DIGITAL INPUTS
The digital inputs on the AD9985 were designed to work with
3.3 V signals, but are tolerant of 5.0 V signals. Therefore, no
extra components need to be added if using 5.0 V logic.
Any noise that gets onto the Hsync input trace will add jitter to
the system. Therefore, minimize the trace length and do not run
any digital or other high frequency traces near it.
VOLTAGE REFERENCE
Bypass with a 0.1 μF capacitor. Place as close to the AD9985 pin
as possible. Make the ground connection as short as possible.
相關(guān)PDF資料
PDF描述
AD9985 110 MSPS/140 MSPS Analog Interface for Flat Panel Displays
AD9985KSTZ-110 110 MSPS/140 MSPS Analog Interface for Flat Panel Displays
AD9985KSTZ-140 110 MSPS/140 MSPS Analog Interface for Flat Panel Displays
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9985KST-110 制造商:Analog Devices 功能描述:110 MSPS/140 MSPS ANLG INTRFC FOR FLAT PNL DISPLAYS 80LQFP - Bulk
AD9985KSTZ-110 功能描述:IC INTERFACE 8BIT 110MSPS 80LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應(yīng)用:2 通道 I²C 多路復用器 接口:I²C,SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1
AD9985KSTZ-140 功能描述:IC INTERFACE 8BIT 140MSPS 80LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標準包裝:3,000 系列:- 應(yīng)用:PDA,便攜式音頻/視頻,智能電話 接口:I²C,2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤(4x4) 包裝:帶卷 (TR) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2
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