MAX4070ATA-T Equivalent & Substitute Parts

Part Overview

The MAX4070ATA-T is a current sense amplifier IC manufactured by Analog Devices Inc./Maxim Integrated, designed for single-circuit current sensing applications. The device features a -3dB bandwidth of 100 kHz and operates across a wide supply voltage range of 3.6 V to 24 V, making it suitable for industrial and automotive current monitoring systems.

The MAX4070ATA-T is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance where this component is no longer in active production.

Substiute Parts

MAX4070ATA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 17659MAX4070ATA-T Datasheet

Current PartRFQ

MAX4038ETA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1138MAX4038ETA+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution analysis for the MAX4070ATA-T is based on the following critical parameters that define functional equivalence:

Package Compatibility: Both the main part and substitute must use the 8-WDFN Exposed Pad package with surface mount technology to ensure PCB layout compatibility without redesign.

Supply Voltage Range: The substitute must operate within or encompass the supply voltage requirements of the original design. The MAX4070ATA-T operates from 3.6 V to 24 V.

Operating Temperature Range: The substitute must support the temperature range specified for the application environment.

Compliance & Certification: Both parts must maintain ROHS3 compliance and equivalent moisture sensitivity ratings to ensure regulatory and environmental compatibility.

Amplifier Functionality: While the MAX4070ATA-T is a current sense amplifier, substitute parts may include general-purpose amplifiers with equivalent circuit count and electrical characteristics suitable for current sensing applications.

The MAX4038ETA+T is identified as a substitute based on shared package geometry, surface mount configuration, and compliance certifications. However, functional differences exist due to its general-purpose amplifier classification and dual-circuit design.

Parameter Comparison

Engineering Selection Recommendations

Supply Voltage Consideration: The MAX4038ETA+T operates with a maximum supply voltage of 3.6 V, which is significantly lower than the MAX4070ATA-T maximum of 24 V. Applications requiring operation above 3.6 V cannot use this substitute without external voltage regulation or circuit modification.

Temperature Range Limitation: The MAX4038ETA+T supports operation to 85°C maximum, compared to the MAX4070ATA-T specification of 125°C. Applications requiring extended high-temperature operation must account for this reduced thermal capability.

Product Status & Availability: The MAX4070ATA-T is obsolete, while the MAX4038ETA+T is active production. Selection of the active part ensures long-term supply chain continuity and availability for future procurement.

Compliance Alignment: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1), ensuring regulatory and environmental compatibility in equivalent applications.

Package Compatibility: Both parts use identical 8-WDFN Exposed Pad packages in 8-TDFN (3x3) configuration, permitting direct PCB footprint compatibility without layout redesign.

Frequently Asked Questions (FAQ)

Q: Can the MAX4038ETA+T directly replace the MAX4070ATA-T in all applications?

A: Direct replacement is not universal. The MAX4038ETA+T has a reduced maximum supply voltage (3.6 V vs. 24 V) and lower maximum operating temperature (85°C vs. 125°C). Substitution is valid only when the application operates within these reduced parameter ranges.

Q: What is the primary functional difference between these parts?

A: The MAX4070ATA-T is a dedicated current sense amplifier with single-circuit design and 100 kHz bandwidth. The MAX4038ETA+T is a general-purpose amplifier with dual-circuit configuration and 4 kHz gain bandwidth product. Functional equivalence depends on application-specific requirements.

Q: Are the physical packages identical?

A: Yes. Both parts use the 8-WDFN Exposed Pad package in 8-TDFN (3x3) configuration with surface mount technology. PCB footprints are compatible without modification.

Q: What compliance certifications apply to both parts?

A: Both the MAX4070ATA-T and MAX4038ETA+T are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance is equivalent.

Q: Why is the MAX4070ATA-T classified as obsolete?

A: Obsolete status indicates the part is no longer in active production by the manufacturer. The MAX4038ETA+T, as an active production part, provides supply chain continuity for applications requiring equivalent functionality within its specified parameter limits.

Q: What parameters must be verified before substitution?

A: Verify that the application operates within the MAX4038ETA+T supply voltage range (1.4 V to 3.6 V) and temperature range (-40°C to 85°C). Confirm that the general-purpose amplifier characteristics meet the original current sensing requirements.