MAX4240 Просмотр технического описания (PDF) - Maxim Integrated

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MAX4240

Single/Dual/Quad, +1.8V/10µA, SOT23, Beyond-the-Rails Op Amps

Maxim Integrated 

19-1343; Rev 3; 9/06

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 ampli-

fiers 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 combina-

tion 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 out-

puts typically swing to within 9mV of the rails with a

100kΩ load. Beyond-the-rails input and rail-to-rail out-

put 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/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

NO. OF

AMPS

SHUTDOWN

PIN-PACKAGE

MAX4240

1

MAX4241

1

—

5-pin SOT23

Yes

8-pin µMAX/SO

MAX4242

2

—

8-pin µMAX/SO

MAX4243

2

Yes

10-pin µMAX,

14-pin SO

MAX4244

4

—

14-pin SO

Beyond-the-Rails is a trademark and µMAX is a registered

trademark of Maxim Integrated Products, Inc.

Features

♦ 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

♦ 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

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

TOP

MARK

ACCS

—

—

—

—

—

—

—

Pin Configurations

TOP VIEW

OUT 1

5 VCC

MAX4240

VEE 2

IN+ 3

4 IN-

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.

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