參數(shù)資料
型號: AD9225AR
廠商: Analog Devices Inc
文件頁數(shù): 14/25頁
文件大?。?/td> 0K
描述: IC ADC 12BIT 25MSPS 28-SOIC
標(biāo)準(zhǔn)包裝: 27
位數(shù): 12
采樣率(每秒): 25M
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 7
功率耗散(最大): 373mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 28-SOIC W
包裝: 管件
輸入數(shù)目和類型: 2 個單端,雙極;1 個差分,單極
AD9225
–21–
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 that
the internal correction logic of the AD9225 is referenced to
AVDD while the output drivers are referenced to DRVDD.
The decoupling shown in Figure 34, a 0.1
mF ceramic chip
capacitor and a 10
mF tantalum capacitor, 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 F
DRVDD
DRVSS
AD9225
10 F
Figure 34. 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 35 to 41 for more information
regarding the placement of decoupling capacitors.
Rev. C
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9225ARRL 制造商:Analog Devices 功能描述:ADC Single Pipelined 25Msps 12-bit Parallel 28-Pin SOIC W T/R
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AD9225ARSRL 功能描述:IC ADC 12BIT 25MSPS 28-SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率(每秒):300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端,單極;1 個單端,雙極
AD9225ARSZ 功能描述:IC ADC 12BIT 25MSPS 28-SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率(每秒):1M 數(shù)據(jù)接口:串行,SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散(最大):- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(4x4) 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端,單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
AD9225ARSZ 制造商:Analog Devices 功能描述:IC 制造商:Analog Devices 功能描述:IC, ADC, 12BIT, 25MSPS, SSOP-28