MAX4243 Maxim, MAX4243 Datasheet - Page 12

• Manufacturer Part Number: MAX4243
• Description: The MAX4240–MAX4244 family of micropower op amps operate from a single +1
• Manufacturer: Maxim

GND). When using dual supplies, pull SHDN to V
enter shutdown mode.
The MAX4240–MAX4244 are fully guaranteed over tem-
perature and supply voltage to drive a maximum resis-
tive load of 10kΩ to V
be driven in many applications. The rail-to-rail output
stage of the amplifier can be modeled as a current
source when driving the load toward V
rent sink when driving the load toward V
tude of this current source/sink varies with supply
voltage, ambient temperature, and lot-to-lot variations
of the units.
Figures 7a and 7b show the typical current source and
sink capability of the MAX4240–MAX4244 family as a
function of supply voltage and ambient temperature.
The contours on the graph depict the output current
Single/Dual/Quad, +1.8V/10µA, SOT23,
Beyond-the-Rails Op Amps
Table 1. MAX4240/MAX4241 Characteristics with Typical Battery Systems
Figure 6. Shutdown Enable/Disable Output Voltage
12
Alkaline (2 Cells)
Nickel-
Cadmium (2 Cells)
Lithium-Ion (1 Cell)
Nickel-Metal-
Hydride (2 Cells)
BATTERY TYPE
______________________________________________________________________________________
SHDN
OUT
V
R
IN
L
= 100k TIED TO V
= 2V
RECHARGEABLE
CC
200 s/div
/ 2, although heavier loads can
Load-Driving Capability
Yes
Yes
Yes
No
EE
MAX4240-44 fig06
CC
V
EE
FRESH
, and as a cur-
(V)
3.0
2.4
3.5
2.4
. The magni-
5V/div
1V/div
V
EE
END-OF-LIFE
to
1.8
1.8
2.7
1.8
(V)
Figure 7a. Output Source Current vs. Temperature
Figure 7b. Output Sink Current vs. Temperature
CAPACITY,
AA SIZE
(mA-h)
2000
1000
1000
750
1000
3000
2500
2000
1500
1000
1200
500
800
600
400
200
0
0
-60 -40 -20
-60 -40 -20
V
MAX4240/MAX4241
IN NORMAL MODE
V
V
V
OPERATING TIME
CC
CC
OH
CC
= 5.5V, V
= 1.8V,
= 200mV
= 1.8V
V
CC
200,000
100,000
100,000
(Hours)
75,000
V
, V
= 5.5V, V
CC
TEMPERATURE (°C)
OL
TEMPERATURE (°C)
OL
= 5.5V, V
= 50mV
0
0
= 200mV
V
OH
CC
20
20
V
V
V
V
CC
= 200mV
OL
= 5.5V, V
CC
CC
CC
= 200mV
= 1.8V, V
=
= 1.8V, V
=
40
40
5.5V, V
1.8V,
OH
V
V
V
V
OPERATING TIME
CC
OH
60
60
CC
OL
V
OL
= 100mV
OH
IN SHUTDOWN
OL
MODE (Hours)
OH
= 1.8V,
= 100mV
= 100mV
= 5.5V,
= 100mV
= 5
= 50mV
=
0.75 x 10
MAX4241
80
80
50mV
0mV
2 x 10
10
10
100
100
6
6
6
6