Datasheet

MAX1447/MAX1496/MAX1498
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
_______________________________________________________________________________________ 7
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1447/96/98 toc16
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
605040302010
2.046
2.045
2.047
2.049
2.048
2.051
2.050
2.053
2.052
2.054
2.044
070
INTERNAL REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1447/96/98 toc17
SUPPLY VOLTAGE (V)
REFERENCE VOLTAGE (V)
4.754.253.753.25
2.045
2.046
2.047
2.048
2.049
2.050
2.044
2.75 5.25
Typical Operating Characteristics (continued)
(AV
DD
= DV
DD
= V
DD
= V
LED
= +2.7V to +5.25V, GND = 0, GLED = 0, external reference mode, REF+ = 2.048V, REF- = GND,
RANGE = 1, internal clock mode, T
A
= +25°C, unless otherwise noted.)
OFFSET ERROR vs. TEMPERATURE
(MAX1447/MAX1498)
MAX1447/96/98 toc10
TEMPERATURE (°C)
OFFSET ERROR (LSB)
605010 20 30 40
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
-0.2
070
GAIN ERROR vs. SUPPLY VOLTAGE
(MAX1447/MAX1498)
MAX1447/96/98 toc11
SUPPLY VOLTAGE (V)
GAIN ERROR (% FULL SCALE)
4.754.253.25 3.75
-0.08
-0.04
-0.06
-0.02
0
0.02
0.04
0.06
0.08
-0.10
2.75 5.25
GAIN ERROR vs. TEMPERATURE
(MAX1447/MAX1498)
MAX1447/96/98 toc12
TEMPERATURE (°C)
GAIN ERROR (% FULL SCALE)
605030 402010
-0.09
-0.08
-0.07
-0.06
-0.05
-0.04
-0.03
-0.02
-0.01
0
-0.10
070
(±200mV INPUT RANGE) INL vs. OUTPUT CODE
(MAX1447/MAX1498)
MAX1447/96/98 toc13
OUTPUT CODE
INL (COUNTS)
10,0000-10,000
-0.5
0
0.5
1.0
-1.0
-20,000 20,000
(±2V INPUT RANGE) INL vs. OUTPUT CODE
(MAX1447/MAX1498)
MAX1447/96/98 toc14
OUTPUT CODE
INL (COUNTS)
10,0000-10,000
-0.5
0
0.5
1.0
-1.0
-20,000 20,000
NOISE DISTRIBUTION
MAX1447/96/98 toc15
NOISE COUNTS
PERCENTAGE OF UNITS (%)
0.80.70.60.50.40.30.20.10-0.1
5
10
15
20
25
0
-0.2
DATA OUTPUT RATE
vs. TEMPERATURE
MAX1447/96/98 toc18
TEMPERATURE (°C)
DATA OUTPUT RATE (Hz)
6035-15 10
4.92
4.98
4.96
4.94
5.00
5.02
5.04
5.06
5.08
5.10
4.90
-40 85