Overview
Features and Benefits
- DC Performance Ideal for High-Precision Sensor Interface
- 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° to +125°C
- Low 10nV/°C Drift
- Low Noise: 1.5µVP-P from DC to 10Hz
- 150dB AVOL, 140dB PSRR, 140dB CMRR
- High Gain-Bandwidth Product
- 1MHz (MAX4238)
- 6.5MHz (MAX4239)
- Ground-Sensing Input
- Rail-to-Rail Output (RL = 1kΩ)
- Ultra-Low, 0.1µV Offset Voltage
- Low Power Consumption Reduces System Power
- Single 2.7V to 5.5V Supply Voltage Range
- 600µA Supply Current
- 0.1µA Shutdown Mode
- Low Power Consumption Reduces System Power
- AEC-Q100 Qualified, Refer to Ordering Information for the List of /V Parts
Product Details
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 AV ≥ 10V/V and a GBWP of 6.5MHz. The MAX4238/MAX4239 are available in 8-pin narrow SO, 6-pin TDFN and SOT23 packages.
Applications
- Electronic Scales
- Instrumentation Amplifiers
- Medical Instrumentation
- Strain Gauges
- Thermocouples
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
-
MAX4238 Reliability Data1/12/2023
-
Dynamic Siphon Steals Current from USB Port1/5/2011
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White-Noise Generator Has No 1/f Component12/6/2010
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ADC Input Translator11/2/2009
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Stabilize Your Transimpedance Amplifier2/3/2012
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Measure the Input Capacitance of an Op Amp7/1/2011
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Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface3/8/2011
-
How Continuous Positive Airway Pressure (CPAP) Respiratory Ventilation Systems Function5/10/2010
-
Introduction to Electrocardiographs5/10/2010
-
Analog ICs for Low Voltage Systems3/23/2006
-
Resistive Bridge Basics: Part One12/22/2004
-
HFAN-08.2.0: How to Control and Compensate a Thermoelectric Cooler (TEC)9/16/2004
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
MAX4238
SPICE Model
LIB
MAX4238 SPICE Macro Model
9.01K
Reference Designs (1)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX4238ASA+ | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| MAX4238ASA+T | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| MAX4238ATT+ | Material Declaration | Reliability Data | Thin Dual Flatpack No Leads, Exposed Pad | |
| MAX4238ATT+T | Material Declaration | Reliability Data | Thin Dual Flatpack No Leads, Exposed Pad | |
| MAX4238AUT+ | Material Declaration | Reliability Data | 6-SOT_23-N/A | |
| MAX4238AUT+T | Material Declaration | Reliability Data | 6-SOT_23-N/A | |
| MAX4238AUT/V+ | Material Declaration | Reliability Data | 6-SOT_23-N/A | |
| MAX4238AUT/V+T | Material Declaration | Reliability Data | 6-SOT_23-N/A | |
| Wafer Fabrication Data | MAX4238 Reliability Data |
PCN-PDN Information
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Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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