MAX44261 Maxim, MAX44261 Datasheet

MAX44261

Manufacturer Part Number

MAX44261

Description

The MAX44260/MAX44261 offer a unique combination of high speed, precision, low noise, and low-voltage operation making them ideally suited for a large number of signal processing functions such as filtering and amplification of signals in portable an

Manufacturer

Maxim

Datasheet

1.MAX44260.pdf (16 pages)

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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. The MAX44260 is also

available in a 1mm x 1.5mm thin μDFN (ultra-thin LGA)

package.

Ordering Information

For related parts and recommended products to use with this part, refer to:

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.

_________________________________________________________________ Maxim Integrated Products 1

appears at end of data sheet.

2.4kI

CORNER FREQUENCY = 10kHz

General Description

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

22kI

330pF

15nF

+3.3V

MAX44260

www.maxim-ic.com/MAX44260.related

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

S 15MHz Unity-Gain Bandwidth

S Low 12.7nV/Hz Input Voltage-Noise Density

S Low 1.2fA/Hz Input Current-Noise Density

S Low 50µV (max) V

S On-Demand V

S 500fA Low Input Bias Current

S 750µA Quiescent Current per Amplifier

S < 1µA Supply Current in Shutdown

S Small, 2mm x 2mm SC70 and 1mm x 1.5mm Thin

S Low 110dB Total Harmonic Distortion

1.8V 15MHz Low-Offset,

Range

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

µDFN (MAX44260) Packages

MAX44260/MAX44261

Notebooks

3G/4G Handsets

Portable Media Players

Portable Medical Instruments

Battery-Operated Devices

Analog-to-Digital Converter Buffers

Transimpedance Amplifiers

General-Purpose Signal Processing

10kI

SALLEN-KEY FILTER

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

Self-Calibration (MAX44261)

3.3nF

at +25°C

MAX11645

ADC

Applications

19-5873; Rev 3; 2/12

Features

Related parts for MAX44261

MAX44261 Summary of contents

Page 1

... 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. ...

Page 2

... CMRR V = -0. 0.1V 0. 0.4V, R OUT DD 0. 0.4V OUT DD 0. 0.4V, R OUT MAX44260/MAX44261 = -40NC to +125NC. Typical values are SHDN DD A MIN TYP -0.1 10 0.8 0.01 0 10kI 100 115 OUT = 600I 91 100 OUT = 32I 80 OUT 50 ) ...

Page 3

... A O P-P V = 0.2V, V 3.3V OUT 20Ω 1nF (load Guaranteed by PSRR 0NC to +70NC A PSRR MAX44260/MAX44261 only I SHDN SHDN MAX44260 MAX44261 T = +25NC (Note SHDN T -40C to +125C (Note +25NC (Note -40 ...

Page 4

... T = -40° -40 - +125°C A -80 -100 -0.5 0 0.5 1.0 1.5 2.0 1.25 COMMON-MODE VOLTAGE (V) MAX44260/MAX44261 = -40NC to +125NC. Typical values are at SHDN +25NC. Temperature limits are guaranteed by design.) A INPUT 4.5 5.0 5.5 -15 - INPUT OFFSET VOLTAGE (µV) OUTPUT-VOLTAGE LOW vs. OUTPUT SINK CURRENT ...

Page 5

... T = +25°C A 120 100 +125° 100 0 OUTPUT SOURCE CURRENT (mA) MAX44260/MAX44261 = -40NC to +125NC. Typical values are at SHDN +25NC. Temperature limits are guaranteed by design.) A OUTPUT-VOLTAGE HIGH vs. OUTPUT SOURCE CURRENT ( 200 180 160 140 T = +25° ...

Page 6

... FREQUENCY (kHz) DC CMRR AND PSRR vs. TEMPERATURE -90 -92 DC CMRR -94 -96 -98 DC PSRR -100 100k -50 - TEMPERATURE (°C) MAX44260/MAX44261 = -40NC to +125NC. Typical values are at SHDN +25NC. Temperature limits are guaranteed by design.) A COMMON-MODE REJECTION RATIO vs. FREQUENCY 0 -20 -40 -60 -80 -100 -120 1k ...

Page 7

... FREQUENCY (Hz) SMALL-SIGNAL TRANSIENT RESPONSE INPUT 50mV/div OUTPUT 50mV/div 100k 200ns/div MAX44260/MAX44261 = -40NC to +125NC. Typical values are at SHDN +25NC. Temperature limits are guaranteed by design.) A TOTAL HARMONIC DISTORTION vs. INPUT AMPLITUDE (f = 10kHz 120 115 110 105 100 ...

Page 8

... STABLE UNSTABLE 100k 0 500 1000 1500 2000 2500 CAPACITIVE LOAD (pF) MAX44260 toc28 MAX44260/MAX44261 = -40NC to +125NC. Typical values are at SHDN +25NC. Temperature limits are guaranteed by design.) A STABILITY vs. CAPACITIVE AND RESISTIVE LOAD 100k 10k 1k UNSTABLE 100 STABLE 10 1 ...

Page 9

... PIN MAX44260 MAX44261 — — _________________________________________________________________ Maxim Integrated Products 9 MAX44260/MAX44261 1.8V 15MHz Low-Offset, NOT TO SCALE + MAX44261 SHDN SS IN- 4 OUT 3 SC70 NAME IN+ Positive Input V Negative Power Supply. Bypass with a 0.1FF capacitor to ground. SS IN- ...

Page 10

... Detailed Description The MAX44260/MAX44261 are high-speed low-power op amps ideal for signal processing applications due to the device’s high precision and low-noise CMOS inputs. The devices self-calibrate on power-up to eliminate effects of temperature and power-supply variation. The MAX44260 also features a low-power shutdown mode that greatly reduces quiescent current while the device is not operational and recovers in 30μ ...

Page 11

... The MAX44261 features a recalibrate input that acts the same as the shutdown mode of the MAX44260. However, when the input is pulled low, the device goes through a self-calibration sequence again ...

Page 12

... This makes these devices ideal for ground-referenced medical and industrial sensor applications. The MAX44260/MAX44261 are ideal for a wide variety of active filter circuits that make use of their wide band- width, rail-to-rail input/output stages and high-impedance CMOS inputs ...

Page 13

... RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 6 SC70 6 Thin FDFN (Ultra-Thin LGA) ________________________________________________________________ Maxim Integrated Products 13 1.8V 15MHz Low-Offset, Low-Power, Rail-to-Rail I/O Op Amps PACKAGE CODE X6SN+1 Y61A1+1 MAX44260/MAX44261 Package Information OUTLINE NO. LAND PATTERN NO. 21-0077 21-0190 90-0189 90-0233 ...

Page 14

... For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. ________________________________________________________________ Maxim Integrated Products 14 1.8V 15MHz Low-Offset, Low-Power, Rail-to-Rail I/O Op Amps Package Information (continued) MAX44260/MAX44261 ...

Page 15

... For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. ________________________________________________________________ Maxim Integrated Products 15 1.8V 15MHz Low-Offset, Low-Power, Rail-to-Rail I/O Op Amps Package Information (continued) MAX44260/MAX44261 ...

Page 16

... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2012 Maxim Integrated Products MAX44260/MAX44261 1.8V 15MHz Low-Offset, DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc. ...

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