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參數資料
| 型號： | AD9211 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
| 中文描述： | 10位，170/200/250 MSPS的1.8弗吉尼亞州/ D轉換器 |
| 文件頁數： | 15/21頁 |
| 文件大小： | 310K |
| 代理商： | AD9211 |
Preliminary Technical Data
AD9211
Rev. PrA | Page 15 of 21
Figure 10. Single-Ended Input Configuration using SPI enabled CML function
CLOCK INPUT CONSIDERATIONS
For optimum performance, the AD9211 the sample clock inputs
(CLK+ and CLK-) should be clocked with a differential signal.
This signal is typically ac-coupled into the CLK+ and CLK- pins
via a transformer or capacitors. These pins are biased internally
and require no additional bias (See Figure X).
1.2V
CLK+
CLK-
2pF
2pF
AVDD
Figure .Equivalent Clock Input Circuit
Figure X shows one preferred method for clocking the AD9211.
The clock source (low jitter) is converted from single-ended to
differential using an RF transformer. The back-to-back Schottky
diodes across the transformer secondary limit clock excursions
into the AD9211 to approximately 0.8 V p-p differential. This
helps prevent the large voltage swings of the clock from feeding
through to other portions of the AD9211 while preserving the
fast rise and fall times of the signal, which are critical to a low
jitter performance.
Clock
Source
CLK+
CLK-
AD9230
Figure X. Transformer Coupled Differential Clock for AD9230/AD9211
If a low jitter clock is available, another option is to ac-couple a
differential PECL signal to the sample clock input pins as shown
in Figure X. The AD9512 (or same family) from offers excellent
jitter performance.
CLK+
CLK-
AD9230
0.1uF
0.1uF
AD9512
PECL
150
Ω
150
Ω
Figure X. Differential PECL Sample Clock for AD9230/AD9211
1.25Vp-p
R
4
9
.
9
Ω
0
.
1
μ
F
1
0
μ
F
0.1uF
A
D9211
VIN-
CML
VIN+
AVDD
AGND
相關PDF資料 |
PDF描述 |
|---|---|
| AD9211-170EB | 10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
| AD9211-200EB | 10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
| AD9211-250EB | 10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
| AD9211BCPZ-170 | 10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
| AD9211BCPZ-200 | 10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9211_07 | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 200 MSPS/250 MSPS/300 MSPS, 1.8 V Analog-to-Digital Converter |
| AD9211-170EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
| AD9211-200EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
| AD9211-200EBZ | 功能描述:BOARD EVAL FOR AD9211-200 RoHS:是 類別:編程器，開發系統 >> 評估板 - 模數轉換器 (ADC) 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數量:1 位數:12 采樣率（每秒）:94.4k 數據接口: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 |
| AD9211-250EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 170/200/250 MSPS 1.8 V A/D Converter |
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