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AD9280-EB データシート(PDF) 11 Page - Analog Devices

部品番号 AD9280-EB
部品情報  CMOS A/D Converter
PDF  25 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD9280-EB データシート(HTML) 11 Page - Analog Devices

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AD9280
–10–
A2
10k
10k
10k
A/D
CORE
4.2k
TOTAL
REFTS
REFBS
10 F
0.1 F
REFTF
REFBF
0.1 F
AIN
+F/S RANGE
OBTAINED FROM
VREF PIN OR
EXTERNAL REF
–F/S RANGE
OBTAINED FROM
VREF PIN OR
EXTERNAL REF
0.1 F
MODE
(AVDD)
+FS
–FS
AD9280
10k
SHA
a. Top/Bottom Mode
V
MAXIMUM MAGNITUDE OF V
IS DETERMINED BY INTERNAL
REFERENCE AND TURNS RATIO
MODE
INTERNAL
REF
AVDD/2
10k
10k
10k
A/D
CORE
4.2k
TOTAL
10 F
0.1 F
REFTF
REFBF
0.1 F
AIN
0.1 F
AD9280
10k
A2
REFTS
REFBS
AVDD/2
SHA
c. Differential Mode
A1
1V
AVSS
REFSENSE
VREF
(1V)
AD9280
0.1 F
1.0 F
d. 1 V Reference
A1
1V
AVSS
REFSENSE
VREF
(= 1 + RA/RB)
RA
RB
INTERNAL 10K REF RESISTORS ARE
SWITCHED OPEN BY THE PRESENSE
OF RA AND RB.
AD9280
0.1 F
1.0 F
f. Variable Reference
(Between 1 V and 2 V)
A1
10k
10k
1V
AVSS
REFSENSE
VREF
(2V)
AD9280
0.1 F
1.0 F
e. 2 V Reference
A1
1V
REFSENSE
AVDD
VREF
AD9280
g. Internal Reference Disable
(Power Reduction)
Figure 16.
MODE
INTERNAL
REF
MIDSCALE OFFSET
VOLTAGE IS DERIVED
FROM INTERNAL OR
EXTERNAL REF
MIDSCALE
V*
AVDD/2
* MAXIMUM MAGNITUDE OF V IS DETERMINED
BY INTERNAL REFERENCE
10k
10k
10k
A/D
CORE
4.2k
TOTAL
REFTS
REFBS
10 F
0.1 F
REFTF
REFBF
0.1 F
AIN
0.1 F
AD9280
10k
A2
SHA
b. Center Span Mode
REV. E



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