LT1990IS8 Equivalent & Substitute Parts

Part Overview

The LT1990IS8 is an active differential amplifier integrated circuit manufactured by Analog Devices Inc. in the Linear Amplifiers category. This single-circuit, rail-to-rail operational amplifier is designed for precision differential signal conditioning applications requiring low input offset voltage and stable gain performance across a wide supply voltage range. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when original stock availability is limited, when alternative packaging formats are required for specific manufacturing processes, or when procurement from different distribution channels becomes necessary while maintaining identical electrical and mechanical specifications.

Substiute Parts

LT1990IS8

Analog Devices Inc.In Stock: 2182LT1990IS8 Datasheet

Current PartRFQ

LT1990IS8#PBF

Analog Devices Inc.In Stock: 1994LT1990IS8#PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LT1990IS8 are determined by strict equivalence across all electrical and mechanical parameters. The substitution logic is based on the following criteria:

Electrical Parameter Equivalence: The substitute part must maintain identical specifications for amplifier type (Differential), number of circuits (1), output type (Rail-to-Rail), slew rate (0.55 V/µs), -3dB bandwidth (105 kHz), input offset voltage (900 µV), supply current (140 µA), output current per channel (22 mA), and supply voltage range (2.7 V to 36 V).

Mechanical and Thermal Equivalence: The substitute part must use the same mounting type (Surface Mount), package configuration (8-SOIC with 0.154" / 3.90mm width), and support the identical operating temperature range (-40°C to 85°C).

Compliance and Regulatory Equivalence: The substitute part must maintain RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited).

Packaging Format Variation: The primary substitute differs only in packaging format (Tube versus standard packaging), representing a distribution and handling variation rather than a functional or electrical difference.

Parameter Comparison

Engineering Selection Recommendations

Both the LT1990IS8 and LT1990IS8#PBF are Active product status components manufactured by Analog Devices Inc. with full regulatory compliance. Selection between these parts is based on procurement and manufacturing process requirements rather than electrical or thermal performance differences.

LT1990IS8 is selected when standard packaging format is required for general component distribution and inventory management.

LT1990IS8#PBF is selected when tube packaging format is required for automated pick-and-place assembly processes or when specific distribution channel requirements mandate this packaging configuration.

Both parts maintain identical electrical performance, thermal characteristics, and compliance certifications. The choice between them does not affect circuit design, performance, or reliability. Substitution is direct and interchangeable at the functional level, with selection driven solely by packaging and procurement logistics.

Frequently Asked Questions (FAQ)

Q: Are LT1990IS8 and LT1990IS8#PBF electrically identical?

A: Yes. Both parts are manufactured by Analog Devices Inc. and maintain identical electrical specifications including slew rate (0.55 V/µs), bandwidth (105 kHz), input offset voltage (900 µV), supply current (140 µA), and output current (22 mA). They operate across the same supply voltage range (2.7 V to 36 V) and temperature range (-40°C to 85°C).

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. LT1990IS8 uses standard packaging, while LT1990IS8#PBF uses tube packaging. This distinction affects handling, storage, and automated assembly compatibility but does not impact electrical performance or circuit functionality.

Q: Can I substitute LT1990IS8#PBF for LT1990IS8 in my design?

A: Yes. Both parts are direct substitutes with identical electrical and mechanical specifications. Substitution is valid for all circuit applications. The choice between them depends on manufacturing process requirements and packaging preferences.

Q: Are both parts RoHS3 compliant?

A: Yes. Both LT1990IS8 and LT1990IS8#PBF are ROHS3 Compliant with REACH Unaffected status and Moisture Sensitivity Level 1 (Unlimited).

Q: What is the 8-SOIC package specification?

A: The 8-SOIC (Small Outline Integrated Circuit) package has a width of 0.154 inches (3.90 mm). Both parts use this identical surface mount package configuration, ensuring mechanical compatibility with the same PCB footprint and assembly equipment.

Q: Which part should I specify for automated assembly?

A: LT1990IS8#PBF with tube packaging is optimized for automated pick-and-place assembly processes. Standard packaging (LT1990IS8) is suitable for manual assembly or alternative distribution methods.

Q: Do these parts have the same operating temperature range?

A: Yes. Both parts operate across the identical temperature range of -40°C to 85°C, ensuring equivalent thermal performance and reliability across all environmental conditions.