AD8274ARZ Equivalent & Substitute Parts

Part Overview

The AD8274ARZ is an active linear amplifier integrated circuit manufactured by Analog Devices Inc., classified as a programmable gain amplifier with single-ended output configuration. This component is housed in an 8-SOIC surface mount package and operates across a wide supply voltage range of 5V to 36V. The device is part of the iPolar® series and maintains Active product status with full RoHS3 compliance and REACH unaffected designation.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this amplifier category. Substitution becomes necessary due to inventory availability, supply chain considerations, or design flexibility requirements while maintaining circuit functionality.

Substiute Parts

AD8274ARZ

Analog Devices Inc.In Stock: 3360AD8274ARZ Datasheet

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INA157U

Texas InstrumentsIn Stock: 1469INA157U Datasheet

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INA157U/2K5

Texas InstrumentsIn Stock: 3868INA157U/2K5 Datasheet

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INA157UA

Burr BrownIn Stock: 3850INA157UA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD8274ARZ are identified based on strict alignment with the following critical parameters:

Mechanical Compatibility: All substitute parts must utilize the 8-SOIC surface mount package with identical 0.154" (3.90mm) width specification to ensure direct PCB footprint compatibility.

Electrical Operating Range: Substitute parts must support the full supply voltage span from minimum 5V to maximum 36V, ensuring operation across the complete intended application range.

Circuit Configuration: All substitutes must maintain single-circuit configuration with matching output topology to preserve signal path integrity.

Temperature Range: Operating temperature specification of -40°C to 85°C must be maintained across all substitute candidates.

Regulatory Compliance: All substitute parts must maintain RoHS3 compliance and REACH unaffected status to satisfy environmental and regulatory requirements.

The identified substitute parts (INA157U, INA157U/2K5, and INA157UA) satisfy these core mechanical and electrical compatibility criteria, though with variations in secondary performance parameters and packaging formats.

Parameter Comparison

Engineering Selection Recommendations

INA157U and INA157U/2K5 (Texas Instruments): These parts maintain full compatibility with the AD8274ARZ across all critical mechanical and electrical parameters. Both devices support the complete 8V to 36V supply range, operate within the -40°C to 85°C temperature specification, and utilize identical 8-SOIC packaging. Both achieve RoHS3 compliance. The primary distinction between these two variants is packaging format: INA157U is supplied in Tube packaging, while INA157U/2K5 is supplied in Tape & Reel format. The Tape & Reel variant (INA157U/2K5) offers higher current inventory availability at 3820 pieces. Secondary performance differences include lower slew rate (14V/µs versus 20V/µs) and reduced output current capability (60mA versus 90mA), which may be acceptable depending on circuit requirements. Moisture sensitivity level is elevated to MSL 3 (168 Hours) compared to the AD8274ARZ MSL 1 rating.

INA157UA (Burr Brown): This part maintains mechanical compatibility through identical 8-SOIC packaging and single-circuit configuration. However, complete electrical parameter specifications are not provided in the available data, limiting full compatibility verification. This part is supplied in Bulk packaging format. Product status is Active with RoHS3 compliance indicated, though detailed compliance documentation is not available.

Selection between these substitutes should be based on specific application requirements regarding slew rate, output current capacity, supply voltage minimum threshold (5V for AD8274ARZ versus 8V for INA157 variants), and packaging format availability.

Frequently Asked Questions (FAQ)

Q: Can the INA157U directly replace the AD8274ARZ in all applications?

A: The INA157U provides mechanical compatibility through identical 8-SOIC packaging and maintains the full 36V maximum supply voltage specification. However, the minimum supply voltage requirement increases from 5V to 8V, which may restrict operation in low-voltage applications. Slew rate is reduced from 20V/µs to 14V/µs, and output current per channel decreases from 90mA to 60mA. These differences require evaluation against specific circuit performance requirements.

Q: What is the difference between INA157U and INA157U/2K5?

A: Both parts are electrically identical Texas Instruments differential amplifiers with matching electrical specifications. The primary difference is packaging format: INA157U is supplied in Tube packaging, while INA157U/2K5 is supplied in Tape & Reel format. The Tape & Reel variant typically accommodates automated assembly processes and offers higher inventory availability.

Q: Are all substitute parts RoHS3 compliant?

A: INA157U and INA157U/2K5 are explicitly RoHS3 compliant. INA157UA indicates RoHS3 compliance status, though complete documentation is not available in the provided data.

Q: What is the significance of the Moisture Sensitivity Level difference?

A: The AD8274ARZ carries MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Substitute parts INA157U and INA157U/2K5 carry MSL 3 (168 Hours) rating, requiring storage and handling within 168-hour moisture exposure limits after package opening. This affects component shelf life and handling procedures in manufacturing environments.

Q: Can the AD8274ARZ operate at 5V supply voltage with INA157 substitutes?

A: No. The INA157 series requires a minimum supply voltage of 8V, while the AD8274ARZ operates at 5V minimum. Applications requiring 5V operation cannot use INA157 variants as direct substitutes.

Q: Are there output type differences between the AD8274ARZ and substitute parts?

A: The AD8274ARZ is specified as single-ended output. The INA157 variants are differential amplifiers. Output type differences may affect circuit integration and signal conditioning requirements depending on application topology.