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參數(shù)資料
| 型號： | AD9228 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Quad, 12-bit, 40/65 MSPS Serial LVDS 1.8 V A/D Converter |
| 中文描述： | 四，12位，六十五分之四十○MSPS的串行LVDS 1.8弗吉尼亞州/ D轉換器 |
| 文件頁數(shù)： | 34/52頁 |
| 文件大小： | 1659K |
| 代理商： | AD9228 |
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AD9228
Power and Ground Recommendations
When connecting power to the AD9228, it is recommended
that two separate 1.8 V supplies be used: one for analog (AVDD)
and one for digital (DRVDD). If only one supply is available, it
should be routed to the AVDD first and then tapped off and
isolated with a ferrite bead or a filter choke preceded by
decoupling capacitors for the DRVDD. The user can employ
several different decoupling capacitors to cover both high and
low frequencies. These should be located close to the point of
entry at the PC board level and close to the parts with minimal
trace length.
Rev. 0 | Page 34 of 52
A single PC board ground plane should be sufficient when
using the AD9228. With proper decoupling and smart parti-
tioning of the PC board’s analog, digital, and clock sections,
optimum performance is easily achieved.
Exposed Paddle Thermal Heat Slug Recommendations
It is required that the exposed paddle on the underside of the
ADC is connected to analog ground (AGND) to achieve the
best electrical and thermal performance of the AD9228. An
exposed continuous copper plane on the PCB should mate to
the AD9228 exposed paddle, Pin 0. The copper plane should
have several vias to achieve the lowest possible resistive thermal
path for heat dissipation to flow through the bottom of the PCB.
These vias should be solder filled or plugged.
To maximize the coverage and adhesion between the ADC and
PCB, partition the continuous copper plane by overlaying a
silkscreen on the PCB into several uniform sections. This provides
several tie points between the two during the reflow process.
Using one continuous plane with no partitions only guarantees
one tie point between the ADC and PCB. See Figure 69 for a
PCB layout example. For detailed information on packaging
and the PCB layout of chip scale packages, see the
AN-772
Application Note
, “A Design and Manufacturing Guide for the
Lead Frame Chip Scale Package (LFCSP),” at
www.analog.com
.
SILKSCREEN PARTITION
PIN 1 INDICATOR
0
-
Figure 69. Typical PCB Layout
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD9228_07 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad, 12-Bit, 40/65 MSPS Serial LVDS 1.8 V A/D Converter |
| AD9228-65EB | 制造商:Analog Devices 功能描述: |
| AD9228-65EB1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Speed ADC USB FIFO Evaluation Kit |
| AD9228-65EBZ | 功能描述:BOARD EVAL FOR AD9228 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉換器 (ADC) 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| AD9228ABCPZ-40 | 功能描述:IC ADC 12BIT SPI/SRL 40M 48LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
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