LMP2015MFX/NOPB Equivalent & Substitute Parts

Part Overview

The LMP2015MFX/NOPB is a general purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This device features rail-to-rail output capability and is designed for single-circuit applications requiring low input offset voltage and minimal input bias current. The product is currently classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

Substiute Parts

LMP2015MFX/NOPB

Texas InstrumentsIn Stock: 4369LMP2015MFX/NOPB Datasheet

Current PartRFQ

LMP2021MFX/NOPB

Texas InstrumentsIn Stock: 1658LMP2021MFX/NOPB Datasheet

MFR RecommendedRFQ

AD8628ARTZ-R2

Analog Devices Inc.In Stock: 3017AD8628ARTZ-R2 Datasheet

MFR RecommendedRFQ

AD8628ARTZ-REEL7

Analog Devices Inc.In Stock: 15400AD8628ARTZ-REEL7 Datasheet

MFR RecommendedRFQ

LMV321LILT

STMicroelectronicsIn Stock: 667029LMV321LILT Datasheet

MFR RecommendedRFQ

NCS2003ASN2T1G

onsemiIn Stock: 15377NCS2003ASN2T1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMP2015MFX/NOPB is determined by the following critical parameters:

Package Compatibility: All substitute parts must use SOT-23-5 surface mount packaging to ensure mechanical and electrical compatibility with existing PCB layouts.

Electrical Interface: Single-circuit operational amplifier configuration with rail-to-rail output capability is required for functional equivalence.

Supply Voltage Range: Substitute parts must support the minimum supply voltage of 2.7 V and accommodate the maximum supply voltage of 5.25 V to ensure operation across the full range of the original design.

Operating Temperature: All substitute parts must maintain operation across the -40°C to 125°C temperature range specified for the LMP2015MFX/NOPB.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status to satisfy regulatory and environmental requirements.

The substitute parts identified fall into two functional categories: zero-drift amplifiers (LMP2021MFX/NOPB, AD8628ARTZ-R2, AD8628ARTZ-REEL7) and general purpose amplifiers (LMV321LILT, NCS2003ASN2T1G). Both categories satisfy the core package, voltage, temperature, and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

LMP2021MFX/NOPB (Texas Instruments): This zero-drift amplifier maintains Texas Instruments manufacturing continuity and is classified as active. It provides superior input offset voltage performance (0.4 µV) compared to the original LMP2015MFX/NOPB and supports an extended maximum supply voltage of 5.5 V. The higher gain bandwidth product (5 MHz) and increased output current capability (50 mA) offer enhanced performance margins. ROHS3 compliance and MSL Level 1 rating are maintained.

AD8628ARTZ-R2 and AD8628ARTZ-REEL7 (Analog Devices Inc.): Both variants of the AD8628 zero-drift amplifier are active products with identical electrical specifications. The primary distinction is packaging format: AD8628ARTZ-R2 is supplied in Cut Tape format with 3000 pieces in stock, while AD8628ARTZ-REEL7 is supplied in Digi-Reel format with 15300 pieces in stock. Both devices provide rail-to-rail output and operate within the required temperature range. Supply voltage maximum is limited to 5 V, which remains compatible with the LMP2015MFX/NOPB design envelope. ROHS3 compliance and MSL Level 1 rating are maintained.

LMV321LILT (STMicroelectronics): This general purpose amplifier is an active product with the highest inventory availability (666966 pieces). It maintains rail-to-rail output and operates across the required temperature range. The extended maximum supply voltage of 5.5 V provides design flexibility. However, the significantly lower slew rate (0.7 V/µs) and gain bandwidth product (1.3 MHz) indicate reduced dynamic performance compared to the LMP2015MFX/NOPB. The substantially higher input bias current (27 nA) and input offset voltage (1 mV) represent degraded precision characteristics. ROHS3 compliance and MSL Level 1 rating are maintained.

NCS2003ASN2T1G (onsemi): This general purpose amplifier is an active product with strong performance characteristics, including the highest slew rate (12.5 V/µs) and gain bandwidth product (7 MHz) among all substitutes. The lowest input bias current (1 pA) and lowest supply current (300 µA) provide superior precision and power efficiency. However, the maximum operating temperature is limited to 85°C, which does not satisfy the full -40°C to 125°C requirement of the original design. ROHS3 compliance and MSL Level 1 rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can the LMP2021MFX/NOPB directly replace the LMP2015MFX/NOPB in existing designs?

A: The LMP2021MFX/NOPB is mechanically and electrically compatible with the LMP2015MFX/NOPB. Both devices use identical SOT-23-5 packaging and support the required supply voltage range of 2.7 V to 5.25 V. The LMP2021MFX/NOPB is classified as active and offers improved input offset voltage performance. Direct substitution is supported for applications where the zero-drift architecture does not introduce unintended behavior changes.

Q: What is the difference between AD8628ARTZ-R2 and AD8628ARTZ-REEL7?

A: Both part numbers reference identical AD8628 zero-drift amplifier devices with identical electrical specifications. The difference is in packaging and supply format. AD8628ARTZ-R2 is supplied in Cut Tape format, while AD8628ARTZ-REEL7 is supplied in Digi-Reel format. Selection between these variants depends on assembly process requirements and inventory management preferences. AD8628ARTZ-REEL7 has significantly higher stock availability.

Q: Why does the NCS2003ASN2T1G have a lower maximum operating temperature than the LMP2015MFX/NOPB?

A: The NCS2003ASN2T1G is specified for operation only to 85°C maximum, whereas the LMP2015MFX/NOPB supports operation to 125°C. This represents a fundamental design difference in the onsemi device. Applications requiring the full -40°C to 125°C temperature range cannot use the NCS2003ASN2T1G as a substitute.

Q: Which substitute part offers the best power efficiency?

A: The LMV321LILT provides the lowest supply current at 130 µA, followed by the NCS2003ASN2T1G at 300 µA. The LMP2015MFX/NOPB draws 930 µA. Selection of a lower-power substitute should be evaluated against the specific application's dynamic performance requirements, as lower supply current often correlates with reduced bandwidth and slew rate.

Q: Are all substitute parts ROHS3 compliant?

A: All identified substitute parts are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. All parts maintain REACH unaffected status. Regulatory and environmental compliance is maintained across all substitution options.

Q: What is the significance of the zero-drift amplifier architecture in the LMP2021MFX/NOPB and AD8628 devices?

A: Zero-drift amplifiers employ internal chopper-stabilization or auto-zeroing techniques to achieve extremely low input offset voltage specifications. The LMP2021MFX/NOPB achieves 0.4 µV offset, and the AD8628 achieves 1 µV offset, compared to the LMP2015MFX/NOPB at 0.12 µV. While the LMP2015MFX/NOPB exhibits superior offset performance, zero-drift devices provide superior long-term stability and temperature coefficient characteristics. Application-specific requirements determine whether zero-drift architecture is beneficial or introduces unnecessary complexity.

Q: Can the LMV321LILT be used in precision measurement applications?

A: The LMV321LILT exhibits significantly degraded precision characteristics compared to the LMP2015MFX/NOPB, with input offset voltage of 1 mV (compared to 0.12 µV) and input bias current of 27 nA (compared to 3 pA). Applications requiring precision measurement or low-offset performance should not use the LMV321LILT as a substitute. The LMP2021MFX/NOPB or AD8628 variants are more appropriate for precision applications.