Datasheet

MAX146/MAX147
+2.7V, Low-Power, 8-Channel,
Serial 12-Bit ADCs
_______________________________________________________________________________________ 7
0.50
0
2.25 2.75 4.25
OFFSET vs. SUPPLY VOLTAGE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
V
DD
(V)
OFFSET (LSB)
3.753.25 4.75 5.25
MAX146/47-12
0.50
0
2.25
2.75
3.75
GAIN ERROR
vs. SUPPLY VOLTAGE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
V
DD
(V)
GAIN ERROR (LSB)
3.25 4.25 5.254.75
MAX146/47-13
0.50
0
2.25 2.75 3.75
CHANNEL-TO-CHANNEL GAIN MATCHING
vs. SUPPLY VOLTAGE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
V
DD
(V)
GAIN MATCHING (LSB)
3.25 4.25 5.254.75
MAX146/47-14
0.50
0
-55 -30
45
OFFSET vs. TEMPERATURE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
TEMPERATURE (˚C)
OFFSET (LSB)
20-5 70 14512095
MAX146/47-15
0.50
0
2.25
2.75 4.25
CHANNEL-TO-CHANNEL OFFSET MATCHING
vs. SUPPLY VOLTAGE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
V
DD
(V)
OFFSET MATCHING (LSB)
3.753.25 5.254.75
MAX146/47-18
0.50
0
-55
-30
20
GAIN ERROR
vs. TEMPERATURE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
TEMPERATURE (˚C)
GAIN ERROR (LSB)
-5 45 120 1459570
MAX146/47-16
0.50
0
-55
-30
20
CHANNEL-TO-CHANNEL GAIN MATCHING
vs. TEMPERATURE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
TEMPERATURE (˚C)
GAIN MATCHING (LSB)
-5 45
1451209570
MAX146/47-17
0.50
0
-55
-30
45
CHANNEL-TO-CHANNEL OFFSET MATCHING
vs. TEMPERATURE
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
TEMPERATURE (˚C)
OFFSET MATCHING (LSB)
20
-5
70 14512095
MAX146/47-19
Typical Operating Characteristics (continued)
(V
DD
= 3.0V, VREF = 2.5V, f
SCLK
= 2.0MHz, C
LOAD
= 20pF, T
A
= +25°C, unless otherwise noted.)