MAX4238AUT-T Maxim Integrated, MAX4238AUT-T Datasheet

MAX4238AUT-T

Manufacturer Part Number

MAX4238AUT-T

Description

Precision Amplifiers Low Offset/Drift Precision

Manufacturer

Maxim Integrated

Datasheet

1.MAX4239ASA-T.pdf (9 pages)

Specifications of MAX4238AUT-T

Input Offset Voltage

0.002 mV at 5.5 V

Package / Case

SOT-23

Gain Bandwidth Product

1 MHz

Maximum Operating Temperature

+ 125 C

Maximum Power Dissipation

727 mW

Minimum Operating Temperature

- 40 C

Operating Supply Voltage

3 V, 5 V

Supply Current

0.85 mA at 5.5 V

Supply Voltage - Max

5.5 V

Supply Voltage - Min

2.7 V

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The MAX4238/MAX4239 are low-noise, low-drift, ultra-

high precision amplifiers that offer near-zero DC offset

and drift through the use of patented autocorrelating

zeroing techniques. This method constantly measures

and compensates the input offset, eliminating drift over

time and temperature and the effect of 1/f noise. Both

devices feature rail-to-rail outputs, operate from a single

2.7V to 5.5V supply, and consume only 600µA. An active-

low shutdown mode decreases supply current to 0.1µA.

The MAX4238 is unity-gain stable with a gain-band-

width product of 1MHz, while the decompensated

MAX4239 is stable with A

6.5MHz. The MAX4238/MAX4239 are available in 8-pin

narrow SO, 6-pin TDFN and SOT23 packages.

19-2424; Rev 3; 8/11

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.

Thermocouples

Strain Gauges

Electronic Scales

Medical Instrumentation

Instrumentation Amplifiers

STRAIN GAUGE

360Ω

Typical Application Circuit

________________________________________________________________ Maxim Integrated Products

General Description

18kΩ

≥ 10V/V and a GBWP of

18kΩ

= 100

MAX4238/

MAX4239

Ultra-Low Offset/Drift, Low-Noise,

Applications

AIN

ADC

Precision SOT23 Amplifiers

o Ultra-Low, 0.1µV Offset Voltage

o Low 10nV/°C Drift

o Specified over the -40°C to +125°C Automotive

o Low Noise: 1.5µV

o 150dB A

o High Gain-Bandwidth Product

o 0.1µA Shutdown Mode

o Rail-to-Rail Output (R

o Low 600µA Supply Current

o Ground-Sensing Input

o Single 2.7V to 5.5V Supply Voltage Range

o Available in a Space-Saving 6-Pin SOT23 and

Note: All devices are specified over the -40°C to +125°C oper-

ating temperature range.

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

* EP = Exposed paddle.

/V denotes an automotive-qualified part.

Pin Configurations appear at end of data sheet.

MAX4238

MAX4239

MAX4238AUT-T

MAX4238AUT/V+T

MAX4238ASA

MAX4238ATT+T

MAX4239AUT-T

MAX4239AUT/V+T

MAX4239ASA

MAX4239ATT+T

Temperature Range

TDFN Packages

2.0µV (max) at +25°C

2.5µV (max) at -40°C to +85°C

3.5µV (max) at -40°C to +125°C

1MHz (MAX4238)

6.5MHz (MAX4239)

PART

VOL

, 140dB PSRR, 140dB CMRR

MINIMUM STABLE

P-P

Ordering Information

PIN-PACKAGE

6 SOT23

8 SO

6 TDFN-EP*

6 SOT23

8 SO

6 TDFN-EP*

from DC to 10Hz

10V/V

GAIN

1V/V

= 1kΩ)

Selector Guide

BANDWIDTH

Features

TOP MARK

(MHz)

GAIN

6.5

+ANG

ABAA

+ANH

AAZZ

—

Related parts for MAX4238AUT-T

MAX4238AUT-T Summary of contents

Page 1

... Shutdown Mode o Rail-to-Rail Output (R o Low 600µA Supply Current o Ground-Sensing Input o Single 2.7V to 5.5V Supply Voltage Range o Available in a Space-Saving 6-Pin SOT23 and TDFN Packages PART MAX4238AUT-T MAX4238AUT/V+T MAX4238ASA MAX4238ATT+T MAX4239AUT-T MAX4239AUT/V+T MAX4239ASA ADC MAX4239ATT+T AIN Note: All devices are specified over the -40° ...

Page 2

Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers ABSOLUTE MAXIMUM RATINGS Power-Supply Voltage (V to GND).......................................6V CC All Other Pins ................................(V GND Output Short-Circuit Duration (OUT shorted GND) ...............................Continuous CC Continuous Power Dissipation (T = +70°C) A 6-Pin Plastic ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) (2.7V ≤ V ≤ 5.5V GND unless otherwise noted.) PARAMETER SYMBOL Maximum Closed-Loop Gain Settling Time Overload Recovery Time Startup Time Supply Voltage Range Supply Current Shutdown Logic-High Shutdown Logic-Low Shutdown Input ...

Page 4

Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers ELECTRICAL CHARACTERISTICS (2.7V ≤ V ≤ 5.5V GND = 0V OUT wise noted.) (Note 5) PARAMETER SYMBOL Input Offset Voltage V Input Offset Drift TCV Common-Mode Input Voltage V ...

Page 5

0V 10kΩ connected INPUT OFFSET DISTRIBUTION -1.5 -1.2 -0.9 -0.6 -0.3 0 0.3 0.6 0.9 1.2 1.5 OFFSET VOLTAGE (µV) OUTPUT HIGH ...

Page 6

Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers ( 10kΩ connected MAX4239 GAIN AND PHASE vs. FREQUENCY -20 -40 -60 -80 -100 ...

Page 7

0V 10kΩ connected 10Hz NOISE OUT 1s/div -2.5V EE Pin Description PIN NAME TDFN SOT23 OUT ...

Page 8

Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers Output Overload Recovery Autozeroing amplifiers typically require a substantial amount of time to recover from an output overload. This is due to the time it takes for the null amplifier to correct the main ...

Page 9

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 9 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products ...

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