Rainbow Electronics MAX1494 - Manual (Page 6)

MAX1492/MAX1494
3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
6 _______________________________________________________________________________________
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
( ±200mV INPUT RANGE) INL vs. OUTPUT CODE
MAX1492/94 toc01
OUTPUT CODE
INL (COUNTS)
10,000 0 -10,000
-0.5
0
0.5
1.0
-1.0
-20,000 20,000
MAX1494
( ±2V INPUT RANGE) INL vs. OUTPUT CODE
MAX1492/94 toc02
OUTPUT CODE
INL (COUNTS)
10,000 0 -10,000
-0.5
0
0.5
1.0
-1.0
-20,000 20,000
NOISE DISTRIBUTION
MAX1492/94 toc03
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
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1492/94 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
4.75 4.25 3.75 3.25
100
200
300
400
500
600
700
0
2.75 5.25
ANALOG SUPPLY
DIGITAL SUPPLY
MAX1494
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX1492/94 toc05
SUPPLY VOLTAGE (V)
OFFSET ERROR (LSB)
4.75 4.25 3.75 3.25
-0.11
-0.06
-0.01
0.04
0.09
0.14
0.19
-0.16
2.75 5.25
MAX1494
OFFSET ERROR vs. TEMPERATURE
MAX1492/94 toc06
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
MAX1494
GAIN ERROR vs. SUPPLY VOLTAGE
MAX1492/94 toc07
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
MAX1494
GAIN ERROR vs. TEMPERATURE
MAX1492/94 toc08
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
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1492/94 toc09
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