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Maxim > Products > Automotive > MAX4238, MAX4239

MAX4238, MAX4239

Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
MAX4238	Active: In Production. See Ordering Information for details.
MAX4239	Active: In Production. See Ordering Information for details.

Description

The MAX4238/MAX4239 are low-noise, low-drift, ultra-high precision amplifiers that offer near-zero DC offset and drift through the use of 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-bandwidth product of 1MHz, while the decompensated MAX4239 is stable with A_V ≥ 10V/V and a GBWP of 6.5MHz. The MAX4238/MAX4239 are available in 8-pin narrow SO, 6-pin TDFN and SOT23 packages.

Data Sheet

Download	Rev 3	(PDF, 286.4kB)
E-Mail

Key Features

Ultra-Low, 0.1µV Offset Voltage
- 2.0µV (max) at +25°C
- 2.5µV (max) at -40°C to +85°C
- 3.5µV (max) at -40°C to +125°C
Low 10nV/°C Drift
Specified over the -40°C to +125°C Automotive Temperature Range
Low Noise: 1.5µV_P-P from DC to 10Hz
150dB A_VOL, 140dB PSRR, 140dB CMRR
High Gain-Bandwidth Product
- 1MHz (MAX4238)
- 6.5MHz (MAX4239)
0.1µA Shutdown Mode
Rail-to-Rail Output (R_L = 1kΩ)
Low 600µA Supply Current
Ground-Sensing Input
Single 2.7V to 5.5V Supply Voltage Range
Available in a Space-Saving 6-Pin SOT23 and TDFN Packages

Applications/Uses

Automatic Test Equipment (ATE)
Cardiac Monitor
Electronic Scales
Industrial: Process Measurement and Control
Instrumentation Amplifiers
Medical Instrumentation
Programmable Logic Controllers (PLCs)
Strain Gauges
Thermocouples

Key Specifications:

Operational Amplifiers

Part Number

Amps.

Rail to Rail

A_VCL

V_SUPPLY (Total)
(V)

I_CC per Amp.
(µA)

V_OS
(µV)

CMRR @DC
(dB)

PSRR @DC
(dB)

Input I_BIAS
(nA)

Unity Gain BW
(MHz)

e_n
(nV/√Hz)

i_n
(pA/√Hz)

Low Pwr. Shutdn

Package/Pins

Budgetary Price

min

max

typ

max

typ

max

typ

See Notes

MAX4239

Output Only

2.7

5.5

600

850

140

0.01

6.5

0.001

Yes

MAX4238

See All Operational Amplifiers (160)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

Application Notes

Application Note 3318		HFAN-08.2.0: How to Control and Compensate a Thermoelectric Cooler (TEC)
Tutorial 3426		Resistive Bridge Basics: Part One
Application Note 3741		Analog ICs for Low Voltage Systems
Tutorial 4294		Differential Gain and Phase—Why Measure It, if You Cannot See It?
Application Note 4527		White-Noise Generator Has No 1/f Component
Application Note 4563		Dynamic Siphon Steals Current from USB Port
Application Note 4617		ADC Input Translator
Tutorial 4685		How Continuous Positive Airway Pressure (CPAP) Respiratory Ventilation Systems Function
Tutorial 4693		Introduction to Electrocardiographs
Tutorial 4701		Introduction to Programmable Logic Controllers (PLCs) and the Operational Function of Main System Modules
Tutorial 4993		Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface
Application Note 5086		Measure the Input Capacitance of an Op Amp
Tutorial 5129		Stabilize Your Transimpedance Amplifier

Product Guides

Amplifiers and Comparators (PDF)

Reliability Reports

Reliability Report:	MAX4238.pdf MAX4239.pdf
Show FIT data for:

Software/Models

MAX4238 Macromodel

MAX4238 Orcad Library

MAX4238AVOL Test Circuit

MAX4238GBW Test Circuit

MAX4238SLEW Test Circuit

MAX4239 Macromodel

MAX4239 Orcad Library

MAX4239AVOL Test Circuit

MAX4239GBW Test Circuit

MAX4239SLEW Test Circuit

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4238ASA			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-4*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4238ASA+			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4238ASA+T			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4238ASA-T			Active		N.SO;8 pin Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX4238ATT+			Active		TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4238ATT+T			Active		TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4238AUT#G16		N/A	No Longer Available	MAX4238AUT+	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4238AUT#TG16		N/A	No Longer Available	MAX4238AUT+T	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4238AUT+			Active		SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4238AUT+T			Active		SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4238AUT-T		N/A	No Longer Available	MAX4238AUT+T	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4238AUT-TG16			Active		SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4238AUT/V+T			Active		SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4239ASA			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-4*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4239ASA+			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4239ASA+T			Active		N.SO;8 pin Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX4239ASA-T			Active		N.SO;8 pin Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX4239ATT+T			Active		TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4239AUT#TG16		N/A	No Longer Available	MAX4239AUT+T	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4239AUT+T			Active		SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4239AUT-T		N/A	No Longer Available	MAX4239AUT+T	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX4239AUT/V+T			Active		SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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More Information

Topmark Coding	MAX4238
Topmark Coding	MAX4239
New Product Press Release	[ 2002-05-30 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2424 Rev 3; 2011-10-20
This page last modified: 2011-10-20