19-1343; Rev 0; 3/98
S in g le /Du a l/Qu a d , +1 .8 V/1 0 µA, S OT2 3 ,
Be yo n d -t h e -Ra ils Op Am p s
0–MAX24
________________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
The MAX4240–MAX4244 family of micropower op amps
operate from a single +1.8V to +5.5V supply or dual
±0.9V to ±2.75V supplies and have Beyond-the-Rails™
♦ Ultra-Low-Voltage Operation:
Guaranteed Down to +1.8V
Typical Operation to +1.5V
®
inp uts a nd Ra il-to-Ra il outp ut c a p a b ilitie s . The s e
♦ Ultra-Low Power Consumption:
10µA Supply Current per Amplifier
1µA Shutdown Mode (MAX4241/MAX4243)
Up to 200,000 Hours Operation from Two AA
Alkaline Cells
amplifiers provide a 90kHz gain-bandwidth product
while using only 10µA of supply current per amplifier.
The MAX4241/MAX4243 have a low-power shutdown
mode that reduces supply current to less than 1µA and
forces the output into a high-impedance state. Although
the minimum operating voltage is specified at +1.8V,
these devices typically operate down to +1.5V. The
combination of ultra-low-voltage operation, beyond-the-
rails inputs, rail-to-rail outputs, and ultra-low power con-
sumption makes these devices ideal for any portable/
two-cell battery-powered system.
♦ Beyond-the-Rails Input Common-Mode Range
♦ Outputs Swing Rail-to-Rail
♦ No Phase Reversal for Overdriven Inputs
♦ 200µV Input Offset Voltage
These amplifiers have an input common-mode range
that extends 200mV beyond each rail, and their outputs
typically swing to within 9mV of the rails with a 100kΩ
load. Beyond-the-rails input and rail-to-rail output char-
acteristics allow the full power-supply voltage to be
used for signal range. The combination of low input off-
set voltage, low input bias current, and high open-loop
gain makes them suitable for low-power/low-voltage
precision applications.
♦ Unity-Gain Stable for Capacitive Loads up to 200pF
♦ 90kHz Gain-Bandwidth Product
♦ Available in Space-Saving 5-Pin SOT23 and
8-Pin µMAX Packages
_______________Ord e rin g In fo rm a t io n
PIN-
SOT
PART
TEMP. RANGE
The MAX4240 is offered in a space-saving 5-pin SOT23
package. All specifications are guaranteed over the
-40°C to +85°C extended temperature range.
PACKAGE TOP MARK
MAX4240EUK-T -40°C to +85°C 5 SOT23-5
ACCS
—
MAX4241EUA
MAX4241ESA
MAX4242EUA
MAX4242ESA
MAX4243EUB
MAX4243ESD
MAX4244ESD
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 SO
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 SO
-40°C to +85°C 10 µMAX
-40°C to +85°C 14 SO
-40°C to +85°C 14 SO
—
________________________Ap p lic a t io n s
—
Two-Cell Battery-
Powered Systems
Strain Gauges
Sensor Amplifiers
Cellular Phones
Notebook Computers
PDAs
—
—
Portable/Battery-Powered
Electronic Equipment
—
—
Digital Scales
_________________P in Co n fig u ra t io n s
_____________________S e le c t o r Gu id e
TOP VIEW
NO. OF
AMPS
PART
SHUTDOWN
PIN-PACKAGE
OUT
1
2
3
5
4
V
CC
MAX4240
MAX4241
MAX4242
1
1
2
—
Yes
—
5-pin SOT23
8-pin µMAX/SO
8-pin µMAX/SO
MAX4240
V
EE
10-pin µMAX,
14-pin SO
MAX4243
MAX4244
2
4
Yes
—
IN+
IN-
14-pin SO
SOT23-5
Beyond-the-Rails is a trademark of Maxim Integrated Products.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.