參數(shù)資料
型號: AD9201ARSZ
廠商: Analog Devices Inc
文件頁數(shù): 3/20頁
文件大?。?/td> 0K
描述: IC ADC CMOS 10BIT DUAL 28-SSOP
標準包裝: 47
位數(shù): 10
采樣率(每秒): 20M
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 245mW
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: 28-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 28-SSOP
包裝: 管件
輸入數(shù)目和類型: 4 個單端,單極;2 個差分,單極
產(chǎn)品目錄頁面: 780 (CN2011-ZH PDF)
AD9201
–11–
REV. D
QREFT
QREFB
IREFT
0.1 F
10 F
0.1 F
AD9201
REFSENSE
AVSS
1V
0.1 F
10 F
IREFB
VREF
0.1 F
10k
ADC
CORE
INTERNAL
CONTROL
LOGIC
10 F
0.1 F
Figure 26. Reference Buffer Equivalent Circuit and Exter-
nal Decoupling Recommendation
For best results in both noise suppression and robustness
against crosstalk, the 4 capacitor buffer decoupling arrangement
shown in Figure 26 is recommended. This decoupling should
feature chip capacitors located close to the converter IC. The
capacitors are connected to either IREFT/IREFB or QREFT/
QREFB. A connection to both sides is not required.
DRIVING THE AD9201
Figure 27 illustrates the use of an AD8051 to drive the AD9201.
Even though the AD8051 is specified with 3 V and 5 V power,
the best results are obtained at
±5 V power. The ADC input
span is 2 V.
ADC
17
16
1k
VREF
AD8051
3
2
50
1k
6
22
0.33 F
0.01 F
10pF
24
Figure 27.
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
0.0E+0
2.0E+6
1.0E+6
4.0E+6
6.0E+6
8.0E+6
10.0E+6
3.0E+6
5.0E+6
7.0E+6
9.0E+6
FUND
2ND
3RD
4TH
5TH
6TH
7TH
8TH
Figure 28. AD8051/AD9201 Performance
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