LMV981BLX Equivalent & Substitute Parts

Part Overview

The LMV981BLX is a general-purpose operational amplifier manufactured by Texas Instruments, designed for rail-to-rail applications in low-voltage environments. This device is classified as Obsolete and is no longer in active production. The LMV981BLX operates across a supply voltage range of 1.8 V to 5 V with a single amplifier circuit in a 6-µSMD (1.01x1.51) package.

Due to its obsolete status, identifying equivalent and substitute parts is necessary for design continuity, production planning, and long-term component availability. Active alternatives maintain identical electrical performance while offering improved availability and compliance certifications.

Substiute Parts

LMV981BLX

Texas InstrumentsIn Stock: 4346LMV981BLX Datasheet

Current PartRFQ

LMV981TLX/NOPB

Texas InstrumentsIn Stock: 25659LMV981TLX/NOPB Datasheet

DirectRFQ

LMV981TL/NOPB

Texas InstrumentsIn Stock: 2635LMV981TL/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMV981BLX is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 0.42 V/µs
• Gain Bandwidth Product: 1.5 MHz
• Current - Input Bias: 14 nA
• Voltage - Input Offset: 1 mV
• Current - Supply: 116 µA
• Current - Output / Channel: 100 mA
• Voltage - Supply Span: 1.8 V to 5 V
• Operating Temperature Range: -40°C to 125°C

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Base Product Number: LMV981
• Package Type: 6-pin BGA variants

All substitute parts listed below share identical electrical specifications and operate within the same functional parameters as the LMV981BLX. Differences exist only in package geometry and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

LMV981TLX/NOPB is the primary substitute for LMV981BLX applications. This part maintains complete electrical equivalence while offering the following advantages:

• Active Product Status: Ensures long-term availability and continued manufacturing support from Texas Instruments
• ROHS3 Compliance: Meets current environmental and regulatory requirements, eliminating compliance risks in new designs
• Higher Inventory Availability: 25,626 units in stock provide superior supply chain security compared to the obsolete LMV981BLX
• Packaging Flexibility: Available in Cut Tape and Digi-Reel formats for both prototype and production volumes

LMV981TL/NOPB serves as a secondary substitute, offering identical electrical performance with Tape & Reel packaging optimized for high-volume manufacturing. This variant is recommended for production environments requiring standard reel configurations.

Package Geometry Consideration: Both substitute parts use 6-DSBGA (1.5x1.3) packaging, which differs from the original 6-µSMD (1.01x1.51) package. PCB layout modifications are required to accommodate the different footprint dimensions. Electrical functionality remains unchanged.

Compliance Advantage: Both substitute parts are ROHS3 compliant, whereas the LMV981BLX is RoHS non-compliant. This distinction is critical for applications subject to environmental regulations or customer compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can LMV981TLX/NOPB directly replace LMV981BLX without circuit modifications?

A: Electrical substitution is direct and complete. All electrical parameters, operating ranges, and functional characteristics are identical. However, PCB layout modifications are required due to package geometry differences. The LMV981TLX/NOPB uses a 6-DSBGA (1.5x1.3) package versus the original 6-µSMD (1.01x1.51) package. Footprint redesign is necessary.

Q: What is the primary advantage of switching to LMV981TLX/NOPB?

A: The LMV981TLX/NOPB is an active product with significantly higher inventory availability (25,626 units vs. 4,299 units for the obsolete LMV981BLX). Additionally, it is ROHS3 compliant, meeting current environmental standards. These factors ensure long-term supply chain reliability and regulatory compliance.

Q: Are there electrical performance differences between LMV981BLX and its substitutes?

A: No. All three parts share identical electrical specifications: 0.42 V/µs slew rate, 1.5 MHz gain bandwidth product, 14 nA input bias current, 1 mV input offset voltage, and 1.8 V to 5 V supply range. Functional performance is equivalent across all variants.

Q: What is the difference between LMV981TLX/NOPB and LMV981TL/NOPB?

A: Both parts are electrically identical and use the same 6-DSBGA (1.5x1.3) package. The primary difference is packaging format: LMV981TLX/NOPB is supplied in Cut Tape and Digi-Reel formats, while LMV981TL/NOPB is supplied in standard Tape & Reel format. Selection depends on procurement volume and manufacturing process requirements.

Q: Is the LMV981BLX still available for purchase?

A: Yes, 4,299 units are currently in stock as new original inventory. However, the product is classified as obsolete, indicating no future manufacturing. Once existing inventory is depleted, the part will no longer be available. Transition to active substitutes is recommended for long-term designs.

Q: Do the substitute parts require different PCB design considerations?

A: Yes. The package geometry change from 6-µSMD (1.01x1.51) to 6-DSBGA (1.5x1.3) requires PCB footprint redesign. Electrical schematic connections remain unchanged. Consult Texas Instruments datasheets for precise footprint specifications and layout guidelines for the 6-DSBGA package.

Q: Are moisture sensitivity levels identical across all variants?

A: Yes. All three parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements. Storage and handling procedures are identical.

Q: What compliance certifications apply to the substitute parts?

A: Both LMV981TLX/NOPB and LMV981TL/NOPB are ROHS3 compliant and REACH unaffected. The original LMV981BLX is RoHS non-compliant. For applications subject to environmental regulations or customer compliance mandates, the active substitutes are required.