19-1343; Rev 3; 9/06
Single/Dual/Quad, +1.8V/10µA, SOT23,
Beyond-the-Rails Op Amps
General Description
Features
The MAX4240–MAX4244 family of micropower op amps
operate from a single +1.8V to +5.5V supply or dual
0.ꢀV to 2.ꢁ5V supplies and haꢂe ꢃeyondꢄtheꢄꢅailsꢆ
inputs and railꢄtoꢄrail output capabilities. These ampliꢄ
fiers proꢂide a ꢀ0kHz gainꢄbandwidth product while
using only 10µA of supply current per amplifier. The
MAX4241/MAX4243 haꢂe a lowꢄpower shutdown mode
that reduces supply current to less than 1µA and forces
the output into a highꢄimpedance state. Although the
minimum operating ꢂoltage is specified at +1.8V, these
deꢂices typically operate down to +1.5V. The combinaꢄ
tion of ultraꢄlowꢄꢂoltage operation, beyondꢄtheꢄrails
inputs, railꢄtoꢄrail outputs, and ultraꢄlow power conꢄ
sumption makes these deꢂices ideal for any portable/
twoꢄcell batteryꢄpowered system.
♦ Ultra-Low-Voltage Operation:
Guaranteed Down to +1.8V
Typical Operation to +1.5V
♦ 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
These amplifiers haꢂe an input commonꢄmode range
that extends 200mV beyond each rail, and their outꢄ
puts typically swing to within ꢀmV of the rails with a
100kΩ load. ꢃeyondꢄtheꢄrails input and railꢄtoꢄrail outꢄ
put characteristics allow the full powerꢄsupply ꢂoltage
to be used for signal range. The combination of low
input offset ꢂoltage, low input bias current, and high
openꢄloop gain makes them suitable for lowꢄpower/lowꢄ
ꢂoltage 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
Ordering Information
PIN-
PACKAGE
TOP
MARK
PART
TEMP RANGE
The MAX4240 is offered in a spaceꢄsaꢂing 5ꢄpin
SOT23 package. All specifications are guaranteed
oꢂer the ꢄ40°C to +85°C extended temperature range.
MAX4240EUKꢄT ꢄ40°C to +85°C 5 SOT23ꢄ5
ACCS
—
MAX4241EUA
MAX4241ESA
MAX4242EUA
MAX4242ESA
MAX4243EUꢃ
MAX4243ESD
MAX4244ESD
ꢄ40°C to +85°C 8 µMAX
ꢄ40°C to +85°C 8 SO
ꢄ40°C to +85°C 8 µMAX
ꢄ40°C to +85°C 8 SO
ꢄ40°C to +85°C 10 µMAX
ꢄ40°C to +85°C 14 SO
ꢄ40°C to +85°C 14 SO
—
Applications
—
TwoꢄCell ꢃatteryꢄ
Powered Systems
Strain Gauges
Sensor Amplifiers
Cellular Phones
Notebook Computers
PDAs
—
—
Portable/ꢃatteryꢄPowered
Electronic Equipment
—
—
Digital Scales
Pin Configurations
Selector Guide
TOP VIEW
NO. OF
AMPS
PART
SHUTDOWN
PIN-PACKAGE
MAX4240
MAX4241
MAX4242
1
1
2
—
5ꢄpin SOT23
OUT
1
2
3
5
4
V
CC
Yes
—
8ꢄpin µMAX/SO
8ꢄpin µMAX/SO
MAX4240
V
EE
10ꢄpin µMAX,
14ꢄpin SO
MAX4243
2
Yes
IN+
IN-
MAX4244
4
—
14ꢄpin SO
Beyond-the-Rails is a trademark and µMAX is a registered
trademark of Maxim Integrated Products, Inc.
SOT23-5
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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.