19-1343; Rev 3; 9/06
Single/Dual/Quad, +1.8V/10µA, SOT23,
Beyond-the-Rails Op Amps
Features
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™
inputs and rail-to-rail output capabilities. These 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 consumption makes these devices ideal for any portable/
two-cell battery-powered system.
♦ Ultra-Low-Voltage Operation:
Guaranteed Down to +1.8V
Typical Operation to +1.5V
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 characteristics allow the full power-supply voltage
to be used for signal range. The combination of low
input offset voltage, low input bias current, and high
open-loop gain makes them suitable for low-power/lowvoltage precision applications.
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.
♦ Unity-Gain Stable for Capacitive Loads up to 200pF
Applications
Two-Cell BatteryPowered Systems
Portable/Battery-Powered
Electronic Equipment
Digital Scales
Strain Gauges
Sensor Amplifiers
Cellular Phones
Notebook Computers
PDAs
♦ 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
♦ Beyond-the-Rails Input Common-Mode Range
♦ Outputs Swing Rail-to-Rail
♦ No Phase Reversal for Overdriven Inputs
♦ 200µV Input Offset Voltage
♦ 90kHz Gain-Bandwidth Product
♦ Available in Space-Saving 5-Pin SOT23 and
8-Pin µMAX® Packages
Ordering Information
PART
TEMP RANGE
PINPACKAGE
TOP
MARK
MAX4240EUK-T
-40°C to +85°C
5 SOT23-5
ACCS
MAX4241EUA
-40°C to +85°C
8 µMAX
—
MAX4241ESA
-40°C to +85°C
8 SO
—
MAX4242EUA
-40°C to +85°C
8 µMAX
—
MAX4242ESA
-40°C to +85°C
8 SO
—
MAX4243EUB
-40°C to +85°C
10 µMAX
—
MAX4243ESD
-40°C to +85°C
14 SO
—
MAX4244ESD
-40°C to +85°C
14 SO
—
Pin Configurations
Selector Guide
PART
NO. OF
AMPS
SHUTDOWN
MAX4240
1
—
MAX4241
1
Yes
2
—
8-pin µMAX/SO
MAX4243
2
Yes
MAX4244
4
—
TOP VIEW
8-pin µMAX/SO
MAX4242
PIN-PACKAGE
5-pin SOT23
10-pin µMAX,
14-pin SO
14-pin SO
Beyond-the-Rails is a trademark and µMAX is a registered
trademark of Maxim Integrated Products, Inc.
OUT
1
VEE 2
IN+ 3
5
VCC
4
IN-
MAX4240
SOT23-5
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
MAX4240–MAX4244
General Description