MAX1492 Datasheet, PDF (6/35 Pages) Maxim Integrated Products – 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers

3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
Typical Operating Characteristics
(AV_DD = DV_DD = 5V, GND = 0, external reference mode, REF+ = 2.048V, REF- = GND, RANGE bit = 1, internal clock mode, T_A =
+25°C, unless otherwise noted.)
MAX1494
MAX1494
(±200mV INPUT RANGE) INL vs. OUTPUT CODE
(±2V INPUT RANGE) INL vs. OUTPUT CODE
1.0
1.0
25
NOISE DISTRIBUTION
20
0.5
0.5
15
0
0
10
-0.5
-0.5
5
-1.0
-20,000
-10,000
0
10,000
OUTPUT CODE
20,000
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
700
600
500
ANALOG SUPPLY
400
300
DIGITAL SUPPLY
200
100
0
2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
-1.0
-20,000
-10,000
0
10,000
OUTPUT CODE
20,000
MAX1494
OFFSET ERROR vs. SUPPLY VOLTAGE
0.19
0.14
0.09
0.04
-0.01
-0.06
-0.11
-0.16
2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
0
-0.2-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
NOISE (LSB)
MAX1494
OFFSET ERROR vs. TEMPERATURE
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
0
10 20 30 40 50 60 70
TEMPERATURE (°C)
MAX1494
GAIN ERROR vs. SUPPLY VOLTAGE
0.08
0.06
0.04
0.02
0
-0.02
-0.04
-0.06
-0.08
-0.10
2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
0
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
-0.07
-0.08
-0.09
-0.10
0
MAX1494
GAIN ERROR vs. TEMPERATURE
10 20 30 40 50 60 70
TEMPERATURE (°C)
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
2.054
2.053
2.052
2.051
2.050
2.049
2.048
2.047
2.046
2.045
2.044
0
10 20 30 40 50 60 70
TEMPERATURE (°C)
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