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
SNR AND SINAD
vs. ANALOG INPUT FREQUENCY
GAIN ERROR vs. TEMPERATURE
HISTOGRAM FOR 30,000 CONVERSIONS
74.0
73.5
73.0
72.5
72.0
71.5
71.0
3
2
35,000
30,000
25,000
20,000
15,000
10,000
5000
f
= 1Msps
f
= 1Msps
SAMPLE
SAMPLE
29992 CODE HITS
SNR
1
0
SINAD
-1
-2
-3
4 CODE HITS
2058
4 CODE HITS
2060 2065
0
0
100
200
300
(kHz)
IN
400
500
-40 -25 -10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
2045
2059
f
OUTPUT CODE (DECIMAL)
THD vs. ANALOG INPUT FREQUENCY
SFDR vs. ANALOG INPUT FREQUENCY
THD vs. INPUT RESISTANCE
-80
-85
100
95
90
85
80
-80
-85
f
= 1.0Msps
f
= 1.0Msps
f
f
= 1.0Msps
SAMPLE
SAMPLE
SAMPLE
= 250kHz
IN
-90
-90
-95
-95
-100
-100
0
100
200
300
(kHz)
400
500
0
100
200
300
(kHz)
400
500
0
100
200
(I)
300
400
f
IN
f
R
IN
IN
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