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參數資料
| 型號： | AD9225 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Complete 12-Bit, 25 MSPS Monolithic A/D Converter |
| 中文描述： | 完整的12位，25 MSPS的單片機的A / D轉換器 |
| 文件頁數： | 21/24頁 |
| 文件大?。?/td> | 321K |
| 代理商： | AD9225 |
AD9225
–21–
REV. A
The digital activity on the AD9225 chip falls into two general
categories: correction logic, and output drivers. The internal
correction logic draws relatively small surges of current, mainly
during the clock transitions. The output drivers draw large
current impulses while the output bits are changing. The size
and duration of these currents are a function of the load on the
output bits: large capacitive loads are to be avoided. Note, the
internal correction logic of the AD9225 is referenced to AVDD
while the output drivers are referenced to DRVDD.
The decoupling shown in Figure 43, 0.1
μ
F ceramic chip capaci-
tors and a 10
μ
F tantalum are appropriate for a reasonable
capacitive load on the digital outputs (typically 20 pF on each
pin). Applications involving greater digital loads should consider
increasing the digital decoupling proportionally, and/or using
external buffers/latches.
0.1
m
F
DRVDD
DRVSS
AD9225
10
m
F
Figure 43. Digital Supply Decoupling
A complete decoupling scheme will also include large tantalum
or electrolytic capacitors on the PCB to reduce low frequency
ripple to negligible levels. Refer to the AD9225/AD9225EB
schematic and layouts in Figures 44–50 for more information
regarding the placement of decoupling capacitors.
相關PDF資料 |
PDF描述 |
|---|---|
| AD9225-EB | Complete 12-Bit, 25 MSPS Monolithic A/D Converter |
| AD9225AR | Complete 12-Bit, 25 MSPS Monolithic A/D Converter |
| AD9225ARS | Complete 12-Bit, 25 MSPS Monolithic A/D Converter |
| AD9226-LQFP-EB | Complete 12-Bit, 65 MSPS ADC Converter |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9225_03 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Complete 12-Bit, 25 MSPS Monolithic A/D Converter |
| AD9225AR | 功能描述:IC ADC 12BIT 25MSPS 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:- 位數:14 采樣率（每秒）:83k 數據接口:串行，并聯 轉換器數目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端，雙極 |
| AD9225ARRL | 制造商:Analog Devices 功能描述:ADC Single Pipelined 25Msps 12-bit Parallel 28-Pin SOIC W T/R |
| AD9225ARS | 功能描述:IC ADC 12BIT 25MSPS 28-SSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:- 位數:14 采樣率（每秒）:83k 數據接口:串行，并聯 轉換器數目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端，雙極 |
| AD9225ARSRL | 功能描述:IC ADC 12BIT 25MSPS 28-SSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
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