MAX4249–MAX4257

UCSP, Single-Supply, Low-Noise,

Low-Distortion, Rail-to-Rail Op Amps

EVALUATION KIT AVAILABLE

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

General Description

The MAX4249–MAX4257 low-noise, low-distortion oper-

ational amplifiers offer rail-to-rail outputs and single-

supply operation down to 2.4V. They draw 400µA of

quiescent supply current per amplifier while featuring

ultra-low distortion (0.0002% THD), as well as low input

voltage-noise density (7.9nV/!Hz) and low input

current-noise density (0.5fA/!Hz). These features make

the devices an ideal choice for portable/battery-powered

applications that require low distortion and/or low noise.

For additional power conservation, the MAX4249/

MAX4251/MAX4253/MAX4256 offer a low-power shut-

down mode that reduces supply current to 0.5µA and

puts the amplifiers’ outputs into a high-impedance

state. The MAX4249-MAX4257’s outputs swing rail-to-

rail and their input common-mode voltage range

includes ground. The MAX4250–MAX4254 are unity-

gain stable with a gain-bandwidth product of 3MHz.

The MAX4249/MAX4255/MAX4256/MAX4257 are inter-

nally compensated for gains of 10V/V or greater with a

gain-bandwidth product of 22MHz. The single MAX4250/

MAX4255 are available in space-saving 5-pin SOT23

packages. The MAX4252 is available in an 8-bump chip-

scale package (UCSP™) and the MAX4253 is available in

a 10-bump UCSP. The MAX4250AAUK comes in a 5-pin

SOT23 package and is specified for operation over the

automotive (-40°C to +125°C) temperature range.

Applications

Wireless Communications Devices

PA Control

Portable/Battery-Powered Equipment

Medical Instrumentation

ADC Buffers

Digital Scales/Strain Gauges

Features

o Available in Space-Saving UCSP, SOT23, and

o Low Distortion: 0.0002% THD (1k" load)

o 400 A Quiescent Supply Current per Amplifier

o Single-Supply Operation from 2.4V to 5.5V

o Input Common-Mode Voltage Range Includes

Ground

o Outputs Swing Within 8mV of Rails with a 10k"

Load

o 3MHz GBW Product, Unity-Gain Stable

(MAX4250–MAX4254)

(MAX4249/MAX4255/MAX4256/MAX4257)

o Excellent DC Characteristics

Large-Signal Voltage Gain = 116dB

o Low-Power Shutdown Mode

Reduces Supply Current to 0.5 A

Places Outputs in a High-Impedance State

o 400pF Capacitive-Load Handling Capability

19-1295; Rev 9; 12/12

Ordering Information continued at end of data sheet.

Selector Guide appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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

A

B

C

1

2

3

OUTA

OUTB

INA-

INB-

INB+

INA+

MAX4252

OUTA

OUTB

INA-

INB-

INA+

INB+

SHDNA

SHDNB

MAX4253

C1

B1

A1

A2

A3

A4

B4

C2

C3

C4

TOP VIEW

(BUMPS ON BOTTOM)

UCSP

UCSP

Pin/Bump Configurations continued at end of data sheet.

Pin/Bump Configurations

Ordering Information

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX4249ESD+

-40°C to +85°C

14 SO

—

MAX4249EUB+

-40°C to +85°C

10 µMAX

—

MAX4250EUK+T

-40°C to +85°C

5 SOT23

ACCI

MAX4250AAUK+T

-40°C to +125°C

5 SOT23

AEYJ

+

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.