MAXIM INTEGRATED PRODUCTS MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps User Manual

19-1295; Rev 7; 4/05

UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps General Description Features

The MAX4249–MAX4257 low-noise, low-distortion oper- Available in Space-Saving UCSP, SOT23, and ational amplifiers offer rail-to-rail outputs and single- µMAX® Packages

supply operation down to 2.4V. They draw 400µA of Low Distortion: 0.0002% THD (1kΩ load) quiescent supply current per amplifier while featuring

400µA Quiescent Supply Current per Amplifier

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

Single-Supply Operation from 2.4V to 5.5V

voltage-noise density (7.9n V/√Hz) and low input

current-noise density (0.5f A/√Hz). These features make Input Common-Mode Voltage Range Includes the devices an ideal choice for portable/battery-powered Ground

applications that require low distortion and/or low noise. Outputs Swing Within 8m V of Rails with a 10kΩ

For additional power conservation, the MAX4249/

MAX4251/MAX4253/MAX4256 offer a low-power shut- 3MHz GBW Product, Unity-Gain Stable down mode that reduces supply current to 0.5µA and (MAX4250–MAX4254)

puts the amplifiers’ outputs into a high-impedance 22MHz GBW Product, Stable with AV 10V/V state. The MAX4249-MAX4257’s outputs swing rail-to- (MAX4249/MAX4255/MAX4256/MAX4257) rail and their input common-mode voltage range

Excellent DC Characteristics

includes ground. The MAX4250–MAX4254 are unity-

VOS = 70µV

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

IBIAS = 1p A

The MAX4249/MAX4255/MAX4256/MAX4257 are inter- Large-Signal Voltage Gain = 116d B nally compensated for gains of 10V/V or greater with a

Low-Power Shutdown Mode

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

Reduces Supply Current to 0.5µA

MAX4255 are available in space-saving 5-pin SOT23

Places Outputs in a High-Impedance State

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

400p F Capacitive-Load Handling Capability

scale package (UCSP™) and the MAX4253 is available in a 10-bump UCSP. The MAX4250AAUK comes in a 5-pin

Ordering Information

SOT23 package and is specified for operation over the

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

PART TEMP RANGE

PACKAGE MARK

Applications

MAX4249ESD -40°C to +85°C 14 SO

Wireless Communications Devices

MAX4249EUB -40°C to +85°C 10 µMAX

PA Control

MAX4250EUK-T -40°C to +85°C 5 SOT23-5 ACCI

Portable/Battery-Powered Equipment M AX 4250AAU K- T - 40°C to + 125°C 5 SOT23-5 AEYJ Medical Instrumentation Ordering Information continued at end of data sheet.

Selector Guide appears at end of data sheet.

ADC Buffers Digital Scales/Strain Gauges

Pin Configurations

TOP VIEW (BUMPS ON BOTTOM)

OUTA VDD OUTB OUTB INB- INB+ SHDNB

B1 B4 INA- MAX4252 INB- VDD VSS

MAX4253

INB+VSSINA+ OUTA INA- INA+ SHDNA

UCSPUCSP

Pin Configurations continued at end of data sheet.

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

Maxim Integrated Products

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.