MAX4040EUA+ Equivalent & Substitute Parts Reference

Part Overview

The MAX4040EUA+ is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for rail-to-rail signal conditioning applications. This single-circuit amplifier operates across a 2.4 V to 5.5 V supply range with low power consumption of 14 µA, making it suitable for battery-powered and portable instrumentation. The device is housed in an 8-uMAX/uSOP surface-mount package and maintains Active product status with full RoHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this operational amplifier category.

Substiute Parts

MAX4040EUA+

Analog Devices Inc./Maxim IntegratedIn Stock: 952MAX4040EUA+ Datasheet

Current PartRFQ

MAX4040EUA+

Analog Devices Inc./Maxim IntegratedIn Stock: 952MAX4040EUA+ Datasheet

DirectRFQ

ADA4528-1ARMZ

Analog Devices Inc.In Stock: 2181ADA4528-1ARMZ Datasheet

MFR RecommendedRFQ

ADA4528-1ARMZ-R7

Analog Devices Inc.In Stock: 3544ADA4528-1ARMZ-R7 Datasheet

MFR RecommendedRFQ

ADA4528-1ARMZ-RL

Analog Devices Inc.In Stock: 2394ADA4528-1ARMZ-RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX4040EUA+ are identified based on compatibility across the following critical parameters:

Mechanical Compatibility:

• Surface-mount package type: 8-TSSOP or 8-MSOP with 0.118" (3.00mm) width
• Single-circuit operational amplifier configuration
• Rail-to-rail output capability

Electrical Compatibility:

• Supply voltage range overlap: minimum 2.4 V to 5.5 V maximum
• Single operational amplifier circuit
• Surface-mount technology suitable for automated assembly

Regulatory & Environmental:

• RoHS3 compliance
• MSL rating of 1 (Unlimited moisture sensitivity)
• Active product status

The ADA4528-1ARMZ series (including ADA4528-1ARMZ, ADA4528-1ARMZ-R7, and ADA4528-1ARMZ-RL) qualifies as manufacturer-recommended substitutes based on identical package geometry, compatible supply voltage specifications, and equivalent circuit count. These parts maintain the same mechanical footprint and regulatory compliance profile.

Parameter Comparison

Engineering Selection Recommendations

MAX4040EUA+ Direct Equivalent: The MAX4040EUA+ itself remains the primary selection when the specified electrical and mechanical parameters are required. This part maintains Active product status with 870 units in stock and full RoHS3 compliance.

ADA4528-1ARMZ Series Substitutes: The ADA4528-1ARMZ, ADA4528-1ARMZ-R7, and ADA4528-1ARMZ-RL are manufacturer-recommended alternatives from Analog Devices Inc. All three variants share identical electrical specifications and package geometry. Selection among these three variants is determined by packaging format and inventory availability:

• ADA4528-1ARMZ: Tube packaging, 2113 units in stock
• ADA4528-1ARMZ-R7: Cut Tape (CT) & Digi-Reel® packaging, 3505 units in stock
• ADA4528-1ARMZ-RL: Reel packaging, 2300 units in stock

All substitute parts maintain RoHS3 compliance, MSL rating of 1 (Unlimited), and Active product status. The ADA4528 series extends the operating temperature range to -40°C to 125°C compared to the MAX4040EUA+ range of -40°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can the ADA4528-1ARMZ series be used as a direct replacement for MAX4040EUA+ in existing designs?

A: The ADA4528-1ARMZ series shares identical package geometry (8-TSSOP/8-MSOP, 0.118" width) and compatible supply voltage specifications (2.2 V to 5.5 V overlaps with 2.4 V to 5.5 V). Both are single-circuit, rail-to-rail operational amplifiers in surface-mount configuration. Mechanical and electrical compatibility is established. However, the ADA4528 series exhibits different performance characteristics: higher slew rate (0.5 V/µs vs. 0.04 V/µs), higher gain bandwidth product (4 MHz vs. 90 kHz), lower input offset voltage (0.3 µV vs. 250 µV), and higher supply current (1.5 mA vs. 14 µA).

Q: What are the key differences between the three ADA4528-1ARMZ variants?

A: The three variants—ADA4528-1ARMZ, ADA4528-1ARMZ-R7, and ADA4528-1ARMZ-RL—are electrically identical. The differences are packaging format only: Tube, Cut Tape & Digi-Reel®, and Reel respectively. Selection is based on assembly process requirements and inventory availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The MAX4040EUA+ and all ADA4528-1ARMZ variants are RoHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity).

Q: What is the operating temperature range difference?

A: The MAX4040EUA+ operates from -40°C to 85°C. The ADA4528-1ARMZ series extends this to -40°C to 125°C, providing wider temperature coverage for extended-range applications.

Q: How do supply current specifications compare?

A: The MAX4040EUA+ draws 14 µA supply current, while the ADA4528-1ARMZ series draws 1.5 mA. This represents a significant difference in power consumption. Applications requiring ultra-low power operation should retain the MAX4040EUA+.

Q: Are the packages mechanically interchangeable?

A: Yes. Both the MAX4040EUA+ and ADA4528-1ARMZ series use 8-TSSOP or 8-MSOP packages with 0.118" (3.00mm) width, ensuring identical PCB footprint and automated assembly compatibility.