MAX11120–MAX11128
1Msps, Low-Power, Serial 12-/10-/8-Bit,
4-/8-/16-Channel ADCs
Typical Operating Characteristics (continued)
(MAX11122ATI+/MAX11125ATI+/MAX11128ATI+, T = +25°C, unless otherwise noted.)
A
REFERENCE CURRENT
vs. SAMPLING RATE
250kHz SINE-WAVE INPUT
(8192-POINT FFT PLOT)
50
40
30
20
10
0
0
-20
f
f
= 1Msps
SAMPLE
= 250kHz
IN
A
= -92.369dB
HD3
f = 254.4kHz
-40
A
= -104.1dB
HD2
f = 500kHz
-60
-80
-100
-120
0
200
400
600
800
1000
0
100
200
300
400
500
f
(ksps)
FREQUENCY (kHz)
SAMPLE
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
SNR vs. REFERENCE VOLTAGE
74
73
72
71
70
69
3.0
2.5
2.0
1.5
1.0
f
f
= 1.0Msps
SAMPLE
= 250kHz
IN
f
V
= 1.0Msps
SAMPLE
= 3.0V
DD
1.0 1.4
1.8
2.2
2.6
(V)
3.0
3.4
-40 -25 -10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
V
REFP
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