MAX1491 Datasheet, PDF (6/25 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 (continued)
(AV_DD = DV_DD = 5V, GND = 0, REF+ = 2.048V, REF- = GND, RANGE = DV_DD, T_A = +25°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)
INTERNAL REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
2.050
2.049
2.048
2.047
2.046
2.045
2.044
2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. TEMPERATURE
700
600
ANALOG SUPPLY
500
400
300
DIGITAL SUPPLY
200
100
0
0 10 20 30 40 50 60 70
TEMPERATURE (°C)
CHARGE-PUMP OUTPUT VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
-2.40
-2.42
-2.44
-2.46
V_NEG STARTUP SCOPE SHOT
V_DD
2V/div
1V/div
V_NEG
-2.48
-2.50
2.75 3.25 3.75 4.25 4.75 5.25
SUPPLY VOLTAGE (V)
C_NEG = 0.1µF
20ms/div
OFFSET ERROR
vs. COMMON-MODE VOLTAGE
0.20
0.15
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
-2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0
COMMON-MODE VOLTAGE (V)
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