Datasheet

MAX144/MAX145
+2.7V, Low-Power, 2-Channel, 108ksps,
Serial 12-Bit ADCs in 8-Pin µMAX
_______________________________________________________________________________________ 5
500
700
900
1100
1300
1500
2.5 3.0 3.5 4.0 4.5 5.55.0
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX144/5-01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
V
REF
= V
DD
R
L
= ∞
C
L
= 50pF
CODE = 101010100000
0
200
400
600
800
1000
-60 20 40-20 0-40 60 80 100 120 140
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX144/5-05
TEMPERATURE (°C)
SHUTDOWN CURRENT (nA)
V
REF
= V
DD
500
750
1250
1000
1500
-60 -20 0 20 40-40 60 80 100 120 140
SUPPLY CURRENT
vs. TEMPERATURE
MAX144/5-02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
V
REF
= V
DD
R
L
= ∞
C
L
= 50pF
CODE = 101010100000
0
200
400
600
800
1000
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
MAX144/5-04
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (nA)
2.5 3.0 3.5 4.0 4.5 5.55.0
V
REF
= V
DD
Typical Operating Characteristics
(V
DD
= +3.0V, V
REF
= 2.5V, 0.1µF at REF, f
SCLK
= 2.17MHz, 16 clocks/conversion cycle (108ksps), CH- = GND for MAX145, T
A
= +25°C,
unless otherwise noted.)
SUPPLY CURRENT
vs. SAMPLING RATE
MAX144/5-03
SAMPLING RATE (sps)
SUPPLY CURRENT (µA)
10,000
0.1
1
10
100
1000
0.1 100 1k 10k1 10 100k
V
DD
= V
REF
C
L
= 20pF
CODE = 101010100000
0
0.2
0.4
0.6
0.8
1.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
OFFSET ERROR
vs. SUPPLY VOLTAGE
MAX144/5-06
SUPPLY VOLTAGE (V)
OFFSET ERROR (LSB)
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0.9
0.8
1.0
OFFSET ERROR
vs. TEMPERATURE
MAX144/5-07
TEMPERATURE (°C)
OFFSET ERROR (LSB)
-60 -10 15-35 40 65 90 115 140
-0.5
-0.3
-0.4
-0.1
-0.2
0.1
0
0.2
0.4
0.3
0.5
2.5 3.53.0 4.0 4.5 5.0 5.5
GAIN ERROR
vs. SUPPLY VOLTAGE
MAX144/5-08
V
DD
(V)
GAIN ERROR (LSB)
-0.5
-0.3
-0.4
-0.1
-0.2
0.1
0
0.2
0.4
0.3
0.5
GAIN ERROR
vs. TEMPERATURE
MAX144/5-09
GAIN ERROR (LSB)
TEMPERATURE (°C)
-60 -10 15-35 40 65 90 115 140