MAX1497 Maxim, MAX1497 Datasheet - Page 8

• Manufacturer Part Number: MAX1497
• Description: 3.5- and 4.5-Digit / Single-Chip ADCs with LED Drivers and C Interface
• Manufacturer: Maxim

3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and µC Interface
(AV
REF- = GND, C
8
2.054
2.053
2.052
2.051
2.050
2.049
2.048
2.047
2.046
2.045
2.044
-0.1
-0.2
-0.5
-1.0
DD
0.6
0.5
0.4
0.3
0.2
0.1
1.0
0.5
_______________________________________________________________________________________
(±200mV INPUT RANGE) INL vs. OUTPUT CODE
0
0
-20,000
= DV
0
0
OFFSET ERROR vs. TEMPERATURE
INTERNAL REFERENCE VOLTAGE
10
10
DD
-10,000
REF+
= V
vs. TEMPERATURE
20
20
TEMPERATURE (°C)
TEMPERATURE (°C)
OUTPUT CODE
DD
MAX1499
MAX1499
= C
30
30
= +2.7V to +5.25V, V
0
REF-
40
40
= 0.1µF, RANGE bit = 1, internal clock mode, C
10,000
50
50
60
60
20,000
70
70
LED
2.050
2.049
2.048
2.047
2.046
2.045
2.044
-0.02
-0.04
-0.06
-0.08
-0.10
0.08
0.06
0.04
0.02
-0.5
-1.0
Typical Operating Characteristics (continued)
= +2.7V to +5.25V, GND = 0, GLED = 0, external reference mode, REF+ = 2.048V,
1.0
0.5
0
0
-20,000
2.75
2.75
(±2V INPUT RANGE) INL vs. OUTPUT CODE
GAIN ERROR vs. SUPPLY VOLTAGE
INTERNAL REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
3.25
3.25
-10,000
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
OUTPUT CODE
3.75
3.75
MAX1499
MAX1499
0
4.25
4.25
10,000
VNEG
4.75
4.75
= 0.1µF. T
20,000
5.25
5.25
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
-0.07
-0.08
-0.09
-0.10
A
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
= +25°C, unless otherwise noted.)
25
20
15
10
0
5
0
-40
0
-0.2
GAIN ERROR vs. TEMPERATURE
-0.1
10
-15
0
NOISE DISTRIBUTION
DATA OUTPUT RATE
vs. TEMPERATURE
20
0.1
TEMPERATURE (°C)
TEMPERATURE (°C)
0.2
10
MAX1499
NOISE (LSB)
30
0.3
0.4
40
35
0.5
0.6
50
0.7
60
60
0.8
70
85