Datasheet
Ultra-Small, 1.8V, µPower,
Rail-to-Rail I/O Op Amps
MAX4291/MAX4292/MAX4294
_______________________________________________________________________________________ 5
1.0
1.2
1.1
1.5
1.4
1.3
1.6
1.7
1.9
1.8
2.0
-55 -25 -10-40
52035
50
65 80 95 110
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE (PSRR ≥ 80dB)
MAX4291 toc02
TEMPERATURE (°C)
MINIMUM OPERATING VOLTAGE (V)
125
-900
-600
-750
-300
-450
-150
0
-55 -25 -10 5-40 20 5035 65 80 95 110 125
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4291 toc03
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (µV)
V
CC
= 5.5V
V
CC
= 1.8V
V
CC
= 2.4V
0
10
5
20
15
30
25
35
-55 -25 -10 5-40 20 35 50 65 80 95 110 125
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX4291 toc04
TEMPERATURE (°C)
INPUT BIAS CURRENT (nA)
V
CC
= 5.5V
V
CC
= 1.8V
-40
-30
-20
-10
0
10
20
30
40
-0.5 0.50 1.0 1.5 2.0 2.5
INPUT BIAS CURRENT vs.
COMMON-MODE VOLTAGE (V
CC
= 1.8V)
MAX4291 toc05
COMMON-MODE VOLTAGE (V)
INPUT BIAS CURRENT (nA)
-40
-10
-20
-30
0
10
30
20
40
-0.5 0.5 1.5 2.5 3.5
4.5 5.5
INPUT BIAS CURRENT vs.
COMMON-MODE VOLTAGE (V
CC
= 5.5V)
MAX4291 toc06
COMMON-MODE VOLTAGE (V)
INPUT BIAS CURRENT (nA)
0
10
5
20
15
25
30
-55 5 35-25 65 95 125
OUTPUT VOLTAGE SWING vs.
TEMPERATURE (R
L
= 100kΩ TO V
CC
/2)
MAX4291-07
TEMPERATURE (°C)
OUTPUT VOLTAGE SWING (mV)
V
OH
= V
CC
- V
OUT
V
OL
= V
OUT
- V
EE
V
OH
(V
CC
= 5.5V OR 1.8V)
V
OL
(V
CC
= 5.5V)
V
OL
(V
CC
= 1.8V)
0
20
10
40
30
50
60
-55 5 35-25 65 95 125
OUTPUT VOLTAGE SWING vs.
TEMPERATURE (R
L
= 2kΩ TO V
CC
/2)
MAX4291-08
TEMPERATURE (°C)
OUTPUT VOLTAGE SWING (mV)
V
OH
= V
CC
- V
OUT
V
OL
= V
OUT
- V
EE
V
OH
(V
CC
= 1.8V)
V
OL
(V
CC
= 5.5V)
V
OL
(V
CC
= 1.8V)
V
OH
(V
CC
= 5.5V)
-105
-90
-95
-100
-85
-80
-70
-75
-65
-55 -25 -10-40 5 203550658095110125
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
MAX4291 toc09
TEMPERATURE (°C)
CMRR (dB)
V
CC
= 5.5V
V
CC
= 1.8V
0 ≤ V
CM
≤ V
CC
Typical Operating Characteristics
(V
CC
= 2.4V, V
EE
= V
CM
= 0, V
OUT
= V
CC
/2, no load, T
A
= +25°C, unless otherwise noted.)
60
80
70
110
100
90
120
130
150
140
160
-55 -25 -10-40
52035
50
65 80 95 110
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
MAX4291 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
125
V
CC
= 5.5V
V
CC
= 1.8V