參數(shù)資料
型號: AD9244BSTZRL-40
廠商: Analog Devices Inc
文件頁數(shù): 18/36頁
文件大?。?/td> 0K
描述: IC ADC 14BIT SGL 40MSPS 48LQFP
標準包裝: 2,000
位數(shù): 14
采樣率(每秒): 40M
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 300mW
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-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個單端,單極;1 個差分,單極
AD9244
Rev. C | Page 25 of 36
Reference Decoupling
The VREF pin should be bypassed to the REFGND pin with a
10 μF tantalum capacitor in parallel with a low inductance
0.1 μF ceramic capacitor. It is also necessary to add a capacitor
network to decouple the REFT and REFB pins. Figure 49 shows
the recommended decoupling networks.
CML
The AD9244 has a midsupply reference point. This is used
within the internal architecture of the AD9244 and must be
decoupled with a 0.1 μF capacitor. It sources or sinks a load of
up to 300 μA. If more current is required, the CML pin should
be buffered with an amplifier.
VR
VR is an internal bias point on the AD9244. It must be
decoupled to AGND with a 0.1 μF capacitor.
AD9244
CML
0.1
μF
VR
0.1
μF
02404-063
Figure 63. CML/VR Decoupling
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