ISL28266FUZ Equivalent & Substitute Parts

Part Overview

The ISL28266FUZ is a general-purpose operational amplifier manufactured by Renesas Electronics Corporation, configured as a dual-channel (2 circuit) rail-to-rail output device in an 8-MSOP surface mount package. This component is classified as obsolete product status, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. The ISL28266FUZ operates across a 2.4 V to 5 V supply span with low input bias current and moderate bandwidth characteristics suitable for general analog signal conditioning applications.

Substiute Parts

ISL28266FUZ

Renesas Electronics CorporationIn Stock: 897ISL28266FUZ Datasheet

Current PartRFQ

LTC6269HMS8E-10#PBF

Analog Devices Inc.In Stock: 1262LTC6269HMS8E-10#PBF Datasheet

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LTC6269HMS8E-10#TRPBF

Analog Devices Inc.In Stock: 880LTC6269HMS8E-10#TRPBF Datasheet

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LTC6269IMS8E-10#PBF

Analog Devices Inc.In Stock: 1357LTC6269IMS8E-10#PBF Datasheet

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LTC6269IMS8E-10#TRPBF

Analog Devices Inc.In Stock: 856LTC6269IMS8E-10#TRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISL28266FUZ is determined by the following critical parameters that must align between the main part and substitute candidates:

Physical Compatibility:

• Package type: 8-MSOP with 0.118" (3.00mm) width
• Mounting type: Surface mount
• Pin count and footprint: 8-pin configuration

Electrical Compatibility:

• Number of circuits: 2 (dual-channel requirement)
• Supply voltage range: Minimum 2.4 V to maximum 5 V overlap
• Operating temperature range: Minimum -40°C coverage
• RoHS3 compliance and REACH unaffected status

Functional Characteristics:

• Amplifier topology: General-purpose or J-FET input types
• Output configuration: Rail-to-rail or equivalent output capability

The LTC6269 family from Analog Devices Inc. satisfies these substitution criteria across all four packaging variants. All substitute parts maintain the 8-MSOP package footprint, dual-channel configuration, surface mount assembly method, and compliance certifications. The LTC6269 variants operate within overlapping supply voltage ranges and extended temperature specifications, with active product status ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

Active Product Status Advantage: All four LTC6269 substitute variants maintain active product status with Analog Devices Inc., ensuring continued manufacturing support, documented availability, and technical resource accessibility. The ISL28266FUZ obsolete classification creates supply chain risk and limits access to manufacturer technical support.

Compliance and Certification Alignment: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory framework of the original ISL28266FUZ. This alignment eliminates compliance re-qualification requirements for applications already certified to these standards.

Temperature Range Consideration: The LTC6269HMS8E-10 variants (both #PBF and #TRPBF) support the full -40°C to 125°C operating temperature range, directly matching the ISL28266FUZ specification. The LTC6269IMS8E-10 variants operate to 85°C maximum, which is suitable for applications not requiring the extended 125°C upper limit.

Packaging Format Selection: LTC6269HMS8E-10#PBF and LTC6269IMS8E-10#PBF are supplied in tube packaging, suitable for manual assembly and lower-volume production. LTC6269HMS8E-10#TRPBF and LTC6269IMS8E-10#TRPBF are supplied in tape and reel format, optimized for automated pick-and-place assembly and high-volume manufacturing.

Inventory Availability: All four substitute parts maintain substantial new original stock levels (797 to 1300 pieces), supporting immediate procurement for design transitions and production continuity.

Frequently Asked Questions (FAQ)

Q: Can the LTC6269 family directly replace the ISL28266FUZ in existing PCB designs?

A: The LTC6269 family shares the 8-MSOP package footprint and pin count with the ISL28266FUZ, enabling direct PCB footprint compatibility. However, the LTC6269-EP variant includes an exposed pad for enhanced thermal performance. Verify that existing PCB thermal design accommodates the exposed pad feature or that thermal management is not compromised by its presence.

Q: What is the difference between the LTC6269HMS8E-10 and LTC6269IMS8E-10 variants?

A: Both variants are J-FET input amplifiers with identical electrical performance specifications. The primary difference is operating temperature range: LTC6269HMS8E-10 operates to 125°C, while LTC6269IMS8E-10 operates to 85°C. Select LTC6269HMS8E-10 for applications requiring the full -40°C to 125°C range; select LTC6269IMS8E-10 for applications with maximum operating temperature of 85°C or lower.

Q: What packaging format should be selected for production assembly?

A: Tube packaging (#PBF variants) is appropriate for manual assembly, prototyping, and low-volume production. Tape and reel packaging (#TRPBF variants) is required for automated surface mount assembly and high-volume manufacturing. Consult your assembly process requirements and equipment capabilities to determine the appropriate format.

Q: Are there supply voltage compatibility concerns when substituting the LTC6269 for the ISL28266FUZ?

A: The ISL28266FUZ operates from 2.4 V minimum, while all LTC6269 variants operate from 3.1 V minimum. Applications requiring operation below 3.1 V are not compatible with LTC6269 substitutes. Verify that your application supply voltage remains at or above 3.1 V for all operating conditions before implementing this substitution.

Q: Does the LTC6269 exposed pad (EP) package variant require PCB design modifications?

A: The 8-MSOP-EP package includes an exposed thermal pad on the bottom of the package. PCB designs must include a thermal pad connection pattern to realize the thermal benefits of this feature. Existing PCB designs without thermal pad patterns will function with the LTC6269-EP, but thermal performance may differ from designs optimized for the exposed pad configuration.

Q: What is the moisture sensitivity level difference between the ISL28266FUZ and LTC6269 substitutes?

A: The ISL28266FUZ has MSL 2 (1 Year) rating, while all LTC6269 variants have MSL 1 (Unlimited) rating. The LTC6269 family provides superior moisture resistance, reducing handling and storage constraints and improving shelf life management.