LMP2231AMFX/NOPB Equivalent & Substitute Parts

Part Overview

The LMP2231AMFX/NOPB is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This single-circuit, rail-to-rail output amplifier operates across a supply voltage range of 1.6 V to 5.5 V and is rated for temperatures from -40°C to 125°C. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters of the general-purpose amplifier category, maintaining surface mount compatibility and rail-to-rail output characteristics.

Substiute Parts

LMP2231AMFX/NOPB

Texas InstrumentsIn Stock: 47477LMP2231AMFX/NOPB Datasheet

Current PartRFQ

NCS2003ASN2T1G

onsemiIn Stock: 15377NCS2003ASN2T1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMP2231AMFX/NOPB are identified based on the following substitution criteria:

Functional Category Match: General-purpose operational amplifier with single circuit configuration

Output Characteristics: Rail-to-rail output capability required

Package Compatibility: Surface mount SOT-23-5 package family (includes TSOT-23-5 variants)

Supply Voltage Range: Minimum 1.6 V to 5.5 V maximum supply span compatibility

Environmental Compliance: RoHS3 compliance and MSL 1 rating required

Product Status: Active status only

The NCS2003ASN2T1G from onsemi qualifies as a substitute based on these parameters. Both devices share identical supply voltage specifications (1.6 V to 5.5 V), surface mount packaging in the SOT-23-5 family, rail-to-rail output architecture, and Active product status with full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution: NCS2003ASN2T1G is qualified as a direct substitute for LMP2231AMFX/NOPB based on matching functional category, package family, supply voltage range, and compliance certifications.

Compliance Status: Both devices maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring equivalent environmental and regulatory standing.

Product Lifecycle: Both devices carry Active product status, confirming ongoing manufacturer support and availability.

Package Consideration: The NCS2003ASN2T1G uses TSOT-23-5 packaging, which is mechanically and electrically compatible with SOT-23-5 footprints in surface mount applications.

Performance Differentiation: The NCS2003ASN2T1G exhibits higher slew rate (12.5 V/µs vs. 0.058 V/µs), higher gain bandwidth product (7 MHz vs. 130 kHz), and higher output current capability (96 mA vs. 30 mA). The LMP2231AMFX/NOPB provides lower input bias current (0.02 pA vs. 1 pA) and lower input offset voltage (10 µV vs. 500 µV). Temperature rating extends to 125°C on the LMP2231AMFX/NOPB versus 85°C maximum on the NCS2003ASN2T1G.

Frequently Asked Questions (FAQ)

Q: Can NCS2003ASN2T1G replace LMP2231AMFX/NOPB in all applications?

A: NCS2003ASN2T1G qualifies as a substitute based on matching supply voltage range, package family, rail-to-rail output, and compliance certifications. However, application-specific performance requirements must be evaluated. The NCS2003ASN2T1G operates to a maximum temperature of 85°C, while the LMP2231AMFX/NOPB extends to 125°C. Input offset voltage differs significantly (500 µV vs. 10 µV), which may affect precision analog applications.

Q: Are the packages physically compatible?

A: Both devices use SOT-23-5 family packaging. The LMP2231AMFX/NOPB uses SC-74A/SOT-23-5, and the NCS2003ASN2T1G uses TSOT-23-5 (thin variant). These packages are mechanically and electrically compatible for surface mount PCB assembly.

Q: What are the key electrical differences?

A: The NCS2003ASN2T1G provides superior dynamic performance with 12.5 V/µs slew rate and 7 MHz gain bandwidth product compared to 0.058 V/µs and 130 kHz respectively on the LMP2231AMFX/NOPB. The LMP2231AMFX/NOPB offers superior precision characteristics with 10 µV input offset voltage versus 500 µV on the NCS2003ASN2T1G.

Q: Are both devices RoHS compliant?

A: Yes, both LMP2231AMFX/NOPB and NCS2003ASN2T1G are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.

Q: What is the supply voltage compatibility?

A: Both devices operate across 1.6 V to 5.5 V supply range, with the NCS2003ASN2T1G minimum specified at 1.7 V. This represents a 0.1 V difference at the lower supply limit.