MAX1190 Datasheet, PDF (18/21 Pages) Maxim Integrated Products – Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs

Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
3.3V
0.1µF
1
MAX6066
2 ^21.5kΩ
3
1µF
3.3V
0.1µF
MAX4254 POWER-SUPPLY
BYPASSING. PLACE CAPACITOR
AS CLOSE AS POSSIBLE TO
THE OP AMP.
2.0V
3
2
21.5kΩ
1.5V
5
6
21.5kΩ
1.0V
10
21.5kΩ
9
21.5kΩ
3.3V
4
1/4 MAX4252
1
2.0V AT 8mA
47Ω
11
10µF
330µF
6V
6V
1.47kΩ
3.3V
4
1/4 MAX4252
7
1.5V AT 0mA
47Ω
11
10µF
6V
330µF
6V
1.47kΩ
3.3V
4
1/4 MAX4252
8
1.0V AT -8mA
47Ω
11
10µF
6V
330µF
6V
1.47kΩ
NOTE: ONE FRONT-END REFERENCE CIRCUIT DESIGN MAY BE USED WITH UP TO 32 ADCs.
N.C.
29 _REFOUT
31 _REFIN
32 _REFP
1 _REFN
N=1
MAX1190
2 _COM
0.1µF 0.1µF 0.1µF
0.1µF
2.2µF
10V
N.C.
29 _REFOUT
31 _REFIN
32
REFP
N = 32
1 _REFN
2 _COM
MAX1190
0.1µF 0.1µF 0.1µF
Figure 9. External Unbuffered Reference Drive with MAX4252 and MAX6066
DOWNCONVERTER
MAX2451
0°
90°
÷₈
INA+
INA-
MAX1190
INB+
INB-
DSP
POST-
PROCESSING
Figure 10. Typical QAM Application Using the MAX1190
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