MAX44260/MAX44261

1.8V 15MHz Low-Offset,

Low-Power, Rail-to-Rail I/O Op Amps

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General Description

The MAX44260/MAX44261 offer a unique combination of

high speed, precision, low noise, and low-voltage opera-

tion making them ideally suited for a large number of

signal processing functions such as filtering and ampli-

fication of signals in portable and industrial equipment.

The amplifiers feature an input offset of less than 50FV

and a high-gain bandwidth product of 15MHz while

maintaining a low 1.8V supply rail. The devices’ rail-to-

rail input/outputs and low noise guarantee maximum

dynamic range in demanding applications such as 12- to

14-bit SAR ADC drivers. Unlike traditional rail-to-rail input

structures, input crossover distortion is absent due to an

optimized input stage with an ultra-quiet charge pump.

The MAX44260 includes a fast-power-on shutdown mode

for further power savings. The MAX44261 offers a unique

on-demand calibration pin where the user can invoke

self-trimming of the input offset voltage.

The family of parts operates from a supply range of 1.8V

to 5.5V over the -40NC to +125NC temperature range and

can operate down to 1.7V over the 0NC to +70NC tem-

perature range. The MAX44260/MAX44261 are available

in small, 6-pin SC70 packages.

Features

S

Low 1.8V Supply Rail Over the -40°C to +125°C

Range

1.7V Supply Rail Over the 0°C to +70°C Range

S

15MHz Unity-Gain Bandwidth

S

Low 12.7nV/√Hz Input Voltage-Noise Density

S

Low 1.2fA/√Hz Input Current-Noise Density

S

S

S

500fA Low Input Bias Current

S

750µA Quiescent Current per Amplifier

S

< 1µA Supply Current in Shutdown

S

Small, 2mm x 2mm SC70 Packages

S

Low 110dB Total Harmonic Distortion

Applications

Notebooks

3G/4G Handsets

Portable Media Players

Portable Medical Instruments

Battery-Operated Devices

Analog-to-Digital Converter Buffers

Transimpedance Amplifiers

General-Purpose Signal Processing

19-5873; Rev 0; 6/11

Ordering Information appears at end of data sheet.

Typical Application Circuit

E V A L U A T I O N K I T A V A I L A B L E

MAX44260

15nF

+3.3V

330pF

3.3nF

SALLEN-KEY FILTER

CORNER FREQUENCY = 10kHz

22kI

2.4kI

10kI

ADC

MAX11645

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.