General Description

The MAX44291/MAX44292/MAX44294 are single/dual/

quad low-noise, precision operational amplifiers. The low

offset and low noise specifications and high supply range

make the MAX44291/MAX44292/MAX44294 ideal for

sensor interfaces, loop-powered systems, and various

types of medical and data acquisition instruments.

The MAX44291/MAX44292/MAX44294 operate with a

wide supply voltage range from a 4.5V to 36V single

supply or dual ±2.25V to ±18V supplies, and consume

only 1.2mA/channel (typ). The MAX44291 features a

shutdown input that reduces the supply current to 1μA/

channel (typ) when in shutdown mode.

The rail-to-rail output swing maximizes the dynamic range

when driving high-resolution ADCs even with low supply

voltage. These devices achieve 10MHz of gain-bandwidth

product.

The MAX44291/MAX44292/MAX44294 are available in

8-pin μMAX® (single), 8-pin SO (dual), and 14-pin SO

(quad) packages and are specified over the -40°C to

+125°C automotive temperature range.

Benefits and Features

● Low Input Noise and High Bandwidth to Drive

Precision ADCs

• 4.9nV/√Hz Low Input Noise

• 10MHz Gain-Bandwidth Product

● Low Input Offset Ensures Accurate Results Over

Temperature

• 125µV (max) Low Input Offset Voltage

• 0.5µV/°C (max) Offset Drift

● Low 1.2mA Quiescent Current (Per Channel) Does

Not Break the Power Budget

● ESD Protection Provides Robust Front-End

• ±8kV Human Body Model

• ±1kV Charged Device Model

● Wide Supply for High-Voltage Front-Ends

• Single 4.5V to 36V or Dual ±2.25V to ±18V Supply

Ranges

● 8-Pin µMAX and 8-/14-Pin SO Packages Save Board

Space

Applications

● Portable Logic Controllers

● Instrumentation

● Test and Measurement Systems

● Sensor Interfaces

Ordering Information appears at end of data sheet.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

R1

R2

R1

½ MAX44292

-15V

+15V

+15V

½ MAX44292

R2

MAX11100

AVDD REF

AGND

AIN

50Ω 4.096V

MAX6126

MICRO-

PROCESSOR

+5V

LOAD CELL APPLICATION

GND

GND

10µF

SPI

INTERFACE

MAX44291/MAX44292/

MAX44294

36V, Single/Dual/Quad, Low-Noise Amplifiers

with Maximum 0.5µV/°C Offset Drift

19-7384; Rev 1; 5/15

Typical Application Circuit

EVALUATION KIT AVAILABLE