Datasheet

MAX1146–MAX1149
Multichannel, True-Differential,
Serial, 14-Bit ADCs
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GAIN ERROR vs. SUPPLY VOLTAGE
(MAX1147/MAX1149)
MAX1146 toc19
SUPPLY VOLTAGE (V)
GAIN ERROR (LSB)
3.33.0
-4
-2
0
2
4
6
-6
2.7 3.6
GAIN ERROR vs. SUPPLY VOLTAGE
(MAX1146/MAX1148)
MAX1146 toc20
SUPPLY VOLTAGE (V)
GAIN ERROR (LSB)
5.155.054.85 4.95
-4
-2
0
2
4
6
-6
4.75 5.25
CHANNEL-TO-CHANNEL GAIN MATCHING
vs. SUPPLY VOLTAGE (MAX1147/MAX1149)
MAX1146 toc21
SUPPLY VOLTAGE (V)
GAIN MATCHING (LSB)
3.33.0
-4
-2
0
2
4
6
-6
2.7 3.6
CHANNEL-TO-CHANNEL GAIN MATCHING
vs. SUPPLY VOLTAGE (MAX1146/MAX1148)
XMAX1146 toc22
SUPPLY VOLTAGE (V)
GAIN MATCHING (LSB)
5.155.054.954.85
-4
-2
0
2
4
6
-6
4.75 5.25
Typical Operating Characteristics (continued)
(V
DD
= +5.0V (MAX1146/MAX1148), V
DD
= +3.3V (MAX1147/MAX1149), SHDN = V
DD
, V
COM
= 0, f
SCLK
= 2.1MHz, external clock
(50% duty cycle), 18 clocks/conversion (116ksps), V
REFADJ
= V
DD
, external +4.096V reference at REF (MAX1146/MAX1148), exter-
nal +2.500V reference at REF (MAX1147/MAX1149), C
REF
= 2.2µF, C
LOAD
= 50pF, T
A
= +25°C, unless otherwise noted.)
OFFSET ERROR vs. SUPPLY VOLTAGE
(MAX1147/MAX1149)
MAX1146 toc17
SUPPLY VOLTAGE (V)
OFFSET ERROR (LSB)
3.33.0
-4
-2
0
2
4
6
-6
2.7 3.6
OFFSET ERROR vs. SUPPLY VOLTAGE
(MAX1146/MAX1148)
MAX1146 toc18
SUPPLY VOLTAGE (V)
OFFSET ERROR (LSB)
5.155.054.954.85
-7
-4
-5
-6
-2
-3
-1
0
-8
4.75 5.25