MAX4240 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Single/Dual/Quad, +1.8V/10μA, SOT23, Beyond-the-Rails Op Amps

19-1343; Rev 0; 3/98
Single/Dual/Quad, +1.8V/10µA, SOT23,
Beyond-the-Rails Op Amps
________________General Description
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 con-
sumption makes these devices ideal for any portable/
two-cell battery-powered system.
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.
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.
________________________Applications
Two-Cell Battery-
Powered Systems
Portable/Battery-Powered
Electronic Equipment
Digital Scales
Strain Gauges
Sensor Amplifiers
Cellular Phones
Notebook Computers
PDAs
_____________________Selector Guide
PART
MAX4240
MAX4241
MAX4242
MAX4243
MAX4244
NO. OF
AMPS
1
1
2
SHUTDOWN
—
Yes
—
2
Yes
4
—
PIN-PACKAGE
5-pin SOT23
8-pin µMAX/SO
8-pin µMAX/SO
10-pin µMAX,
14-pin SO
14-pin SO
Beyond-the-Rails is a trademark of Maxim Integrated Products.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
____________________________Features
o Ultra-Low-Voltage Operation:
Guaranteed Down to +1.8V
Typical Operation to +1.5V
o 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
o Beyond-the-Rails Input Common-Mode Range
o Outputs Swing Rail-to-Rail
o No Phase Reversal for Overdriven Inputs
o 200µV Input Offset Voltage
o Unity-Gain Stable for Capacitive Loads up to 200pF
o 90kHz Gain-Bandwidth Product
o Available in Space-Saving 5-Pin SOT23 and
8-Pin µMAX Packages
_______________Ordering Information
PART
TEMP. RANGE
MAX4240EUK-T -40°C to +85°C
MAX4241EUA -40°C to +85°C
MAX4241ESA -40°C to +85°C
MAX4242EUA -40°C to +85°C
MAX4242ESA -40°C to +85°C
MAX4243EUB -40°C to +85°C
MAX4243ESD -40°C to +85°C
MAX4244ESD -40°C to +85°C
PIN-
PACKAGE
5 SOT23-5
8 µMAX
8 SO
8 µMAX
8 SO
10 µMAX
14 SO
14 SO
SOT
TOP MARK
ACCS
—
—
—
—
—
—
—
_________________Pin Configurations
TOP VIEW
OUT 1
5 V_CC
MAX4240
V_EE 2
IN+ 3
4 IN-
SOT23-5
Pin Configurations continued at end of data sheet.
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