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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsMAX4238ASA+T
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MAX4238ASA+T - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
MAX4238ASA+T
Manufacturer
Maxim Integrated
Allelco Part Number
32D-MAX4238ASA+T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
20,852 pcs available, New & Original
Parts Description
IC OPAMP GP 1 CIRCUIT 8SOIC
Package
8-SOIC
Data sheet
MAX4238ASA+T.pdf

Part Numbering Guide

Part Numbering System.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 20852
  • Unit Price: $1.075
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.075 $1.08
10+ $0.936 $9.36
30+ $0.849 $25.47
100+ $0.76 $76.00
500+ $0.626 $313.00
1000+ $0.608 $608.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

MAX4238ASA+T Tech Specifications
Analog Devices Inc./Maxim Integrated - MAX4238ASA+T technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - MAX4238ASA+T

Product Attribute Attribute Value
Manufacturer Maxim Integrated
Voltage - Supply Span (Min) 2.7 V
Voltage - Supply Span (Max) 5.5 V
Voltage - Input Offset 0.1 µV
Supplier Device Package 8-SOIC
Slew Rate 0.35V/µs
Series -
Package / Case 8-SOIC (0.154", 3.90mm Width)
Package Tape & Reel (TR)
Output Type Single Ended, Rail-to-Rail
Product Attribute Attribute Value
Operating Temperature -40°C ~ 125°C
Number of Circuits 1
Mounting Type Surface Mount
Gain Bandwidth Product 1 MHz
Current - Supply 600µA
Current - Output / Channel 40 mA
Current - Input Bias 1 pA
Base Product Number MAX4238
Amplifier Type General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Parts Introduction

MAX4238ASA+T Image
MAX4238ASA+T (1)

Manufacturer Part Number

MAX4238ASA+T

Manufacturer

Maxim Integrated

Introduction

The MAX4238ASA+T is a high-precision, low-power, single-supply, rail-to-rail operational amplifier (op-amp) designed for instrumentation and general-purpose applications.

Product Features and Performance

Single-supply operation from 2.7V to 5.5V

Rail-to-rail input and output

Low input offset voltage of 0.1mV

Low input bias current of 1pA

Gain bandwidth product of 1MHz

Slew rate of 0.35V/μs

Low quiescent current of 600μA

Product Advantages

Excellent precision and low power consumption

Wide supply voltage range for versatile applications

Rail-to-rail input and output for enhanced signal swing

Low offset voltage and bias current for high-accuracy measurements

Compact 8-SOIC package for space-constrained designs

Key Technical Parameters

Operating temperature range: -40°C to +125°C

Supply voltage range: 2.7V to 5.5V

Input offset voltage: 0.1mV

Input bias current: 1pA

Gain bandwidth product: 1MHz

Slew rate: 0.35V/μs

Quiescent current: 600μA

Quality and Safety Features

RoHS3 compliant

Housed in a lead-free, 8-SOIC package

Compatibility

The MAX4238ASA+T is compatible with a wide range of electronic devices and systems that require high-precision, low-power operational amplifiers.

Application Areas

Instrumentation and measurement equipment

Data acquisition systems

Industrial control and automation

Medical devices

Portable and battery-powered electronics

Product Lifecycle

The MAX4238ASA+T is an active product in Maxim Integrated's portfolio. There are no immediate plans for discontinuation, and replacement or upgrade options are available if needed.

Key Reasons to Choose This Product

Exceptional precision and low power consumption for demanding applications

Wide supply voltage range and rail-to-rail input/output for versatile use

Compact 8-SOIC package for space-constrained designs

Robust design and RoHS3 compliance for reliability and safety

Established manufacturer (Maxim Integrated) with a strong reputation in the industry

Frequently Asked Questions(FAQ)

How does the MAX4238ASA+T’s input offset voltage of 0.1 µV impact precision analog front-end design when amplifying low-level sensor signals below 1 mV?
The MAX4238ASA+T exhibits an input offset voltage of just 0.1 µV, which is significantly lower than typical general-purpose op-amps in its class. This characteristic reduces gain error in precision amplification stages, especially critical when interfacing with high-impedance sensors such as thermocouples or strain gauges that produce microvolt-level outputs. For a gain of 100, this offset contributes only 10 µV to the output, minimizing calibration overhead and improving measurement linearity across the full temperature range from -40°C to 125°C.
In what scenarios would the MAX4238ASA+T’s rail-to-rail output capability provide tangible advantages over standard-output amplifiers in battery-powered embedded systems?
The MAX4238ASA+T supports rail-to-rail output swing within 2.7 V to 5.5 V supply rails, enabling maximum signal excursion even near power limits. This feature is particularly beneficial in low-voltage designs like IoT edge nodes or portable instrumentation where headroom for signal peaks is limited. By fully utilizing the available supply voltage, designers can increase dynamic range without raising the supply rail, thereby extending battery life—a key trade-off consideration when selecting between performance and power efficiency.
How does the MAX4238ASA+T compare to similar single-supply op-amps like the LMV321 in terms of bias current and noise performance for long-term stability applications?
While both the MAX4238ASA+T and LMV321 are general-purpose op-amps suitable for single-supply operation, the MAX4238ASA+T offers dramatically lower input bias current (1 pA vs. typically >1 nA) and superior dc precision due to its 0.1 µV input offset voltage. Although the LMV321 may have lower noise density at audio frequencies, the MAX4238ASA+T excels in applications requiring minimal input loading on high-resistance sources or stable gain over time, such as electrochemical sensing or bridge measurements.
What design considerations apply when driving capacitive loads exceeding 100 nF with the MAX4238ASA+T to avoid instability or oscillation?
The MAX4238ASA+T has moderate output drive capability with 40 mA sourcing/sinking current, but its unity-gain bandwidth is limited to 1 MHz, and phase margin degrades under heavy capacitive loading. To maintain stability with loads above 100 nF, a small series resistor (typically 10–50 Ω) should be inserted between the output and capacitor to isolate the amplifier and prevent peaking. Additionally, feedback compensation or choosing an op-amp with built-in output resistance cancellation becomes essential in precision filter stages.
Can the MAX4238ASA+T reliably operate in automotive environments requiring AEC-Q100 qualification, and what alternative from Maxim Integrated might be more appropriate?
No, the MAX4238ASA+T is not qualified to AEC-Q100 standards; it is intended for commercial and industrial use only. For automotive-grade applications requiring extended temperature ranges and reliability validation, Maxim Integrated offers alternatives such as the MAX4239ASA+T, which maintains similar electrical characteristics but includes AEC-Q100 Grade 2 certification (-40°C to +125°C). Engineers must verify functional safety requirements before substituting parts in mission-critical systems.
Given its 600 µA quiescent current and 0.35 V/µs slew rate, how does the MAX4238ASA+T perform in duty-cycled sensing applications compared to ultra-low-power comparators?
The MAX4238ASA+T draws 600 µA during active operation, making it inefficient for always-on detection tasks where power consumption dominates system metrics. However, in periodic sensing scenarios—such as wake-up signal conditioning—its fast slew rate allows rapid response after power-up, reducing average settling time. When paired with sleep-mode control, it outperforms comparators lacking linear response, though dedicated micropower op-amps or comparators would still yield lower total energy per cycle in continuous monitoring contexts.
What precautions should be taken when using the MAX4238ASA+T in high-gain configurations above 100 to minimize noise and offset drift?
At gains greater than 100, the amplified input-referred noise and offset voltage become significant relative to the signal. The MAX4238ASA+T’s low input offset (0.1 µV) helps, but thermal noise scales with √(gain × bandwidth). To mitigate this, limit closed-loop bandwidth via external filtering and avoid excessive gain stacking. Also, ensure proper PCB layout with star grounding and guard rings around high-impedance nodes, as leakage currents can introduce errors that overwhelm the device’s inherent precision.
How does the MAX4238ASA+T’s gain-bandwidth product of 1 MHz influence its suitability for active filtering in sensor data acquisition systems?
With a gain-bandwidth product of 1 MHz, the MAX4238ASA+T can implement second-order active filters up to approximately 100 kHz while maintaining sufficient phase margin. This makes it viable for anti-aliasing or signal-conditioning filters in moderate-speed ADC front-ends, such as those sampling at 200 ksps. Beyond this frequency, gain roll-off accelerates rapidly, limiting utility in high-bandwidth applications where higher GBW devices like the MAX4475 would be preferable despite higher power draw.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated MAX4238ASA+T

Product Attribute MAX4238ASA-T MAX4238ASA+ MAX4238AUT+T MAX4238ASA
Part Number MAX4238ASA-T MAX4238ASA+ MAX4238AUT+T MAX4238ASA
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Current - Output / Channel - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current - Supply - - - -
Slew Rate - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Number of Circuits - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Voltage - Supply Span (Max) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Output Type - Current - Unbuffered Voltage - Buffered -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply Span (Min) - - - -
Gain Bandwidth Product - - - -
Current - Input Bias - - - -
Amplifier Type - - - -
Voltage - Input Offset - - - -

MAX4238ASA+T Datasheet PDF

Download MAX4238ASA+T pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for MAX4238ASA+T - Analog Devices Inc./Maxim Integrated.

Application Notes
Introduction to Programmable Logic Controllers (PL.pdf Reduce the Chances of Human Error: Part 2, Super A.pdf Stabilize Your Transimpedance Amplifier.pdf
Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.pdf
Part Numbering Guide
Part Numbering System.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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MAX4238ASA+T Image

MAX4238ASA+T

Analog Devices Inc./Maxim Integrated
32D-MAX4238ASA+T

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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