Rainbow Electronics MAX1499 - Manual (Page 8)

INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1497/99 toc16
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
60 50 40 30 20 10
2.046
2.045
2.047
2.049
2.048
2.051
2.050
2.053
2.052
2.054
2.044
0 70
INTERNAL REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1497/99 toc17
SUPPLY VOLTAGE (V)
REFERENCE VOLTAGE (V)
4.75 4.25 3.75 3.25
2.045
2.046
2.047
2.048
2.049
2.050
2.044
2.75 5.25
MAX1497/MAX1499
3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and µC Interface
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(AV DD = DV DD = V DD = +2.7V to +5.25V, V LED = +2.7V to +5.25V, GND = 0, GLED = 0, external reference mode, REF+ = 2.048V,
REF- = GND, C REF+ = C REF- = 0.1µF, RANGE bit = 1, internal clock mode, C VNEG = 0.1µF. T A = +25°C, unless otherwise noted.)
MAX1499
OFFSET ERROR vs. TEMPERATURE
MAX1497/99 toc10
TEMPERATURE (°C)
OFFSET ERROR (LSB)
60 50 10 20 30 40
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
-0.2
0 70
MAX1499
GAIN ERROR vs. SUPPLY VOLTAGE
MAX1497/99 toc11
SUPPLY VOLTAGE (V)
GAIN ERROR (% FULL SCALE)
4.75 4.25 3.25 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
MAX1499
GAIN ERROR vs. TEMPERATURE
MAX1497/99 toc12
TEMPERATURE (°C)
GAIN ERROR (% FULL SCALE)
60 50 30 40 20 10
-0.09
-0.08
-0.07
-0.06
-0.05
-0.04
-0.03
-0.02
-0.01
0
-0.10
0 70
MAX1499
(±200mV INPUT RANGE) INL vs. OUTPUT CODE
MAX1497/99 toc13
OUTPUT CODE
INL (COUNTS)
10,000 0 -10,000
-0.5
0
0.5
1.0
-1.0
-20,000 20,000
MAX1499
(±2V INPUT RANGE) INL vs. OUTPUT CODE
MAX1497/99 toc14
OUTPUT CODE
INL (COUNTS)
10,000 0 -10,000
-0.5
0
0.5
1.0
-1.0
-20,000 20,000
NOISE DISTRIBUTION
MAX1497/99 toc15
NOISE (LSB)
PERCENTAGE OF UNITS (%)
0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -0.1
5
10
15
20
25
0
-0.2
DATA OUTPUT RATE
vs. TEMPERATURE
MAX1497/99 toc18
TEMPERATURE (°C)
DATA OUTPUT RATE (Hz)
60 35 -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