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參數資料
| 型號： | AD9480-LVDS-PCB3 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | ADC |
| 英文描述： | 8-Bit, 250 MSPS 3.3 V A/D Converter |
| 中文描述： | 8位，250MSPS的3V A/D轉換器 |
| 文件頁數： | 13/28頁 |
| 文件大小： | 1146K |
| 代理商： | AD9480-LVDS-PCB3 |
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AD9480
The AD9480 can be easily configured for different full-scale
ranges. See the Voltage Reference section for more information.
Optimal performance is achieved with a 1 V p-p analog input.
Rev. 0 | Page 13 of 28
0
SENSE = GND
VIN+
2.0V
500mV
2.0V
VIN–
DIGITALOUT = ALL 1s
DIGITALOUT = ALL 0s
Figure 13. Analog Input Full Scale
VOLTAGE REFERENCE
A stable and accurate 1.0 V reference is built into the AD9480.
Users can choose this internal reference or provide an external
reference for greater accuracy and flexibility. Figure 15 shows
the typical reference variation with temperature. Table 9
summarizes the available reference configurations.
SELECT
LOGIC
ADC
CORE
0.5V
7k
VREF
0.1
μ
F
10
μ
F+
SENSE
VIN+
VIN–
0
7k
Figure 14. Internal Reference Equivalent Circuit
Fixed Reference
The internal reference can be configured for a differential span
of 1 V p-p (see Figure 17). It is recommended to place a 0.1uF
capacitor as close as possible to the VREF pin; a 10 uF capacitor
is also required (see the PCB layout for guidance). If the internal
reference of the AD9480 is used to drive multiple converters to
improve gain matching, the loading of the reference by the
other converters must be considered. Figure 17 depicts how the
internal reference voltage is affected by loading.
TEMPERATURE (
°
C)
V
1.0085
1.0080
1.0075
1.0060
1.0055
1.0065
1.0070
1.0050
1.0045
1.0040
1.0035
–40
–20
0
20
40
60
80
0
Figure 15. Typical Reference Variation with Temperature
0
0.1
μ
F
10
μ
F
VREF
SENSE
Figure 16. Internal Fixed Reference (1 V p-p)
IREF (mA)
%
0
–0.1
–0.2
–0.4
–0.3
–0.5
0
0.5
1.5
1.0
2.0
2.5
3.0
0
Figure 17. Internal VREF vs. Load Current
Table 9. Reference Configurations
SENSE Voltage
AVDD
0.5 V (Self Biased)
AGND to 0.2 V
Resulting VREF
N/A (external reference input)
0.5 × (1 + R1/R2) V
1.0 V
Reference
External
Programmable
Internal fixed
Differential Span
1 x external reference voltage
1 × VREF (0.75 V p-p to 1.5 V p-p)
1 V p-p
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| AD9480ASUZ-2501 | 8-Bit, 250 MSPS 3.3 V A/D Converter |
| AD9480BSUZ-2501 | 8-Bit, 250 MSPS 3.3 V A/D Converter |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9480XSU-250 | 制造商:Analog Devices 功能描述:8-BIT, 250 MSPS, 3.3 V A/D CONVERTER - Bulk |
| AD9481 | 制造商:AD 制造商全稱:Analog Devices 功能描述:8-Bit, 250 MSPS 3.3 V A/D Converter |
| AD9481BSUZ-250 | 功能描述:IC ADC 8BIT 250MSPS 3.3V 44-TQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率（每秒）:20M 數據接口:并聯 轉換器數目:2 功率耗散（最大）:155mW 電壓電源:模擬和數字 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® 輸入數目和類型:4 個單端，單極；2 個差分，單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD9481-PCB | 制造商:Analog Devices 功能描述:EVAL KIT FOR 8BIT, 250 MSPS 3.3V A/D CNVRTR - Bulk |
| AD9481-PCBZ | 功能描述:BOARD EVAL 8BIT 250MSPS 44-TQFP 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 |
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