
MAX1211
65Msps, 12-Bit, IF Sampling ADC
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21.5kΩ
1%
21.5kΩ
1%
21.5kΩ
1%
21.5kΩ
1%
21.5kΩ
1%
1MΩ
1MΩ
47Ω
1.47kΩ
+3.3V
2
REFP
REFN
COM
REFOUT
GND
2
3
1/4
MAX4254
2.000V
1
1
39
38
39
38
2
3
1
1µF
10µF
6V
0.1µF
V
DD
3
330µF
6V
+3.3V
UNCOMMITTED
NOTE: ONE FRONT-END REFERENCE CIRCUIT
SUPPORTS UP TO 8 MAX1211s.
+3.3V
0.1µF
2.2µF
0.1µF
*1µF
0.1µF
0.1µF
0.1µF
10µF
2.2µF
MAX1211
MAX6066
2.500V
REFIN
REFIN
REFP
REFN
COM
REFOUT
GND
V
DD
0.1µF
2.2µF
0.1µF
*1µF
0.1µF
0.1µF
0.1µF
10µF
2.2µF
MAX1211
47Ω
1.47kΩ
6
5
1/4
MAX4254
1.500V
7
10µF
6V
330µF
6V
47Ω
1.47kΩ
9
10
1/4
MAX4254
1.000V
8
10µF
6V
330µF
6V
11
12
13
4
14
0.1µF
MAX4254
1/4
1
2
3
*PLACE AS CLOSE TO THE DEVICE AS POSSIBLE.
Figure 13. External Unbuffered Reference Driving Eight ADCs with MAX4254 and MAX6066
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