LMP2231AMA/NOPB Equivalent & Substitute Parts

Part Overview

The LMP2231AMA/NOPB is a general-purpose operational amplifier manufactured by Texas Instruments, designed for rail-to-rail applications in 8-SOIC surface mount packaging. This device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when the main part becomes unavailable, when inventory constraints require alternative sourcing, or when application requirements permit operation within the specified parameter ranges of equivalent devices.

Substiute Parts

LMP2231AMA/NOPB

Texas InstrumentsIn Stock: 935LMP2231AMA/NOPB Datasheet

Current PartRFQ

MAX4289ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1197MAX4289ESA+ Datasheet

MFR RecommendedRFQ

RE46C311S8F

Microchip TechnologyIn Stock: 2876RE46C311S8F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMP2231AMA/NOPB are qualified based on the following criteria:

Mandatory Compatibility Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Voltage - Supply Span (Max): 5.5 V minimum
• RoHS3 Compliance
• MSL 1 (Unlimited) rating

Substitution Logic: Equivalent parts must share identical package geometry and pinout compatibility to enable direct board-level replacement. All identified substitutes maintain the 8-SOIC form factor and surface mount configuration. Supply voltage maximum rating of 5.5 V is maintained across all substitutes. All parts carry Active product status and RoHS3 compliance certification. Minimum supply voltage and performance parameters (slew rate, gain bandwidth product, input offset voltage, supply current) may vary within application-acceptable ranges depending on circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

LMP2231AMA/NOPB (Primary Part): Select this part when the full operating temperature range of -40°C to 125°C is required. This device offers the highest slew rate (0.058 V/µs) and gain bandwidth product (130 kHz) among the three options, making it suitable for applications requiring faster signal response. The lowest input offset voltage (10 µV) supports precision analog applications. Current inventory of 899 pieces is available.

MAX4289ESA+ (Substitute - Analog Devices Inc./Maxim Integrated): This substitute maintains compatibility with the -40°C to 85°C operating temperature range and is suitable for applications not requiring the extended upper temperature limit of 125°C. The MAX4289ESA+ provides lower input bias current (5 nA) compared to the LMP2231AMA/NOPB, beneficial for high-impedance input circuits. Supply voltage range extends to a lower minimum of 1.0 V. Current inventory of 1134 pieces is available. All compliance certifications (RoHS3, MSL 1) are maintained.

RE46C311S8F (Substitute - Microchip Technology): This substitute is applicable for applications operating within the -10°C to 60°C temperature range. The RE46C311S8F features the lowest supply current (600 nA) among the three options, making it advantageous for battery-powered or ultra-low-power applications. Output current per channel is 27 mA, comparable to the primary part. Minimum supply voltage is 1.8 V. Current inventory of 2835 pieces is available. All compliance certifications (RoHS3, MSL 1) are maintained.

Frequently Asked Questions (FAQ)

Q: Can the MAX4289ESA+ be used as a direct replacement for the LMP2231AMA/NOPB?

A: The MAX4289ESA+ shares the same 8-SOIC package geometry and pinout, enabling direct board-level replacement. However, the operating temperature range differs: MAX4289ESA+ operates from -40°C to 85°C, while the LMP2231AMA/NOPB extends to 125°C. Verify that your application does not require operation above 85°C before substitution.

Q: What are the key performance differences between these three parts?

A: The LMP2231AMA/NOPB provides the highest slew rate (0.058 V/µs) and gain bandwidth product (130 kHz). The MAX4289ESA+ offers lower input bias current (5 nA) and extended lower supply voltage operation (1.0 V minimum). The RE46C311S8F features the lowest supply current (600 nA), optimizing power consumption in battery-powered designs.

Q: Are all three parts RoHS3 compliant?

A: Yes. The LMP2231AMA/NOPB, MAX4289ESA+, and RE46C311S8F are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level rating.

Q: Which substitute should I select for a low-power application?

A: The RE46C311S8F is the optimal choice for low-power applications, featuring a supply current of only 600 nA. Verify that the operating temperature range (-10°C to 60°C) and minimum supply voltage (1.8 V) are compatible with your circuit requirements.

Q: Can the RE46C311S8F operate at the full -40°C to 125°C temperature range?

A: No. The RE46C311S8F operating temperature range is -10°C to 60°C. For applications requiring extended temperature operation, select either the LMP2231AMA/NOPB (-40°C to 125°C) or MAX4289ESA+ (-40°C to 85°C).

Q: Are there any supply voltage compatibility issues between these parts?

A: All three parts support a maximum supply voltage of 5.5 V. Minimum supply voltages differ: LMP2231AMA/NOPB requires 1.6 V minimum, MAX4289ESA+ operates from 1.0 V minimum, and RE46C311S8F requires 1.8 V minimum. Verify your circuit's minimum supply voltage against each part's specification.

Q: What is the input offset voltage difference, and does it matter for my application?

A: Input offset voltages are: LMP2231AMA/NOPB (10 µV), MAX4289ESA+ (200 µV), and RE46C311S8F (3 mV). For precision analog applications requiring minimal offset, the LMP2231AMA/NOPB is preferred. For general-purpose applications, the higher offset voltages of the substitutes are typically acceptable.