MAX4131ESA+ Equivalent & Substitute Parts

Part Overview

The MAX4131ESA+ is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for rail-to-rail applications in 8-SOIC surface mount packaging. This single-circuit amplifier operates across a 2.7 V to 6.5 V supply range with a slew rate of 4 V/µs and 10 MHz gain bandwidth product, suitable for low-power signal conditioning and general analog processing applications.

The MAX4131ESA+ is currently in active product status with 3,658 units in stock. Equivalent and substitute parts are identified based on matching functional parameters, package compatibility, and electrical performance characteristics that permit direct circuit substitution or design adaptation.

Substiute Parts

MAX4131ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3726MAX4131ESA+ Datasheet

Current PartRFQ

MAX4131ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3726MAX4131ESA+ Datasheet

DirectRFQ

TLV2450AIDR

Texas InstrumentsIn Stock: 5214TLV2450AIDR Datasheet

MFR RecommendedRFQ

TLV2450CD

Texas InstrumentsIn Stock: 1834TLV2450CD Datasheet

MFR RecommendedRFQ

TLV2450ID

Texas InstrumentsIn Stock: 1045TLV2450ID Datasheet

MFR RecommendedRFQ

TLV2460AIDR

Texas InstrumentsIn Stock: 1350TLV2460AIDR Datasheet

MFR RecommendedRFQ

TLV2460CD

Texas InstrumentsIn Stock: 1825TLV2460CD Datasheet

MFR RecommendedRFQ

TLV2460CDR

Texas InstrumentsIn Stock: 2217TLV2460CDR Datasheet

MFR RecommendedRFQ

TLV2460ID

Texas InstrumentsIn Stock: 1169TLV2460ID Datasheet

MFR RecommendedRFQ

TLV2460IDR

Texas InstrumentsIn Stock: 2131TLV2460IDR Datasheet

MFR RecommendedRFQ

TLV2620IDR

Texas InstrumentsIn Stock: 1032TLV2620IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX4131ESA+ are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Voltage - Supply Span (Min): 2.7 V minimum
• Voltage - Supply Span (Max): 6.5 V maximum or compatible range
• Operating Temperature: -40°C to 85°C or extended range
• RoHS3 Compliance and MSL Level 1

Substitute parts are grouped into two categories:

Category A - Direct Functional Equivalents (TLV2450 Series): These parts maintain identical package, pinout, and basic functional specifications. The TLV2450AIDR, TLV2450ID, and TLV2450CD share the 8-SOIC package and rail-to-rail output configuration. Electrical performance differs in slew rate (0.11 V/µs vs. 4 V/µs) and gain bandwidth product (220 kHz vs. 10 MHz), making them suitable for lower-speed applications with reduced power consumption.

Category B - Enhanced Performance Alternatives (TLV2460 Series): The TLV2460AIDR, TLV2460CD, TLV2460CDR, TLV2460ID, and TLV2460IDR provide intermediate performance between the MAX4131ESA+ and higher-speed devices. These parts offer 1.6 V/µs slew rate and 6.4 MHz gain bandwidth product with improved input bias current (1.3 nA) and higher output current capability (80 mA).

Category C - High-Performance Alternative (TLV2620IDR): The TLV2620IDR represents the highest-performance substitute with 7 V/µs slew rate and 11 MHz gain bandwidth product, featuring extremely low input bias current (2 pA) and extended temperature range support.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Identical Performance: The MAX4131ESA+ is the primary choice when 4 V/µs slew rate and 10 MHz gain bandwidth product are required. With 3,658 units in active stock status, this part maintains full availability and ROHS3 compliance.

For Lower-Power Applications (TLV2450 Series): The TLV2450AIDR and TLV2450ID are suitable substitutes for applications where reduced power consumption is prioritized over speed. These parts consume only 23 µA supply current compared to 1 mA for the MAX4131ESA+, with slew rate reduced to 0.11 V/µs and gain bandwidth product of 220 kHz. The TLV2450AIDR is recommended over TLV2450CD due to active product status and extended temperature range (-40°C to 125°C). The TLV2450CD is obsolete and should not be selected for new designs.

For Intermediate Performance (TLV2460 Series): The TLV2460CDR is the recommended substitute when higher output current (80 mA vs. 50 mA) and improved input bias current (1.3 nA vs. 50 nA) are required while maintaining active product status. This part operates at 1.6 V/µs slew rate and 6.4 MHz gain bandwidth product. The TLV2460AIDR, TLV2460ID, and TLV2460IDR are in Last Time Buy status and should be avoided for new designs unless existing inventory commitments require their use.

For High-Performance Applications (TLV2620IDR): The TLV2620IDR provides the highest slew rate (7 V/µs) and gain bandwidth product (11 MHz) among available substitutes, with extremely low input bias current (2 pA). This part is in Last Time Buy status with limited inventory (924 units) and operates at reduced maximum supply voltage (5.5 V vs. 6.5 V).

Product Status Considerations:

• Active Status: MAX4131ESA+, TLV2450AIDR, TLV2450ID, TLV2460CD, TLV2460CDR
• Last Time Buy Status: TLV2460AIDR, TLV2460ID, TLV2460IDR, TLV2620IDR
• Obsolete Status: TLV2450CD (avoid for new designs)

All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q1: Can the TLV2450 series directly replace the MAX4131ESA+ in existing designs?

A: The TLV2450 series shares identical 8-SOIC package and pinout with the MAX4131ESA+, enabling direct PCB substitution. However, electrical performance differs significantly. The TLV2450 operates at 0.11 V/µs slew rate and 220 kHz gain bandwidth product compared to 4 V/µs and 10 MHz for the MAX4131ESA+. Direct replacement is suitable only for applications where lower speed and reduced power consumption are acceptable. Circuit performance must be verified for timing-sensitive or high-frequency signal processing applications.

Q2: What is the primary advantage of the TLV2460 series over the MAX4131ESA+?

A: The TLV2460 series provides significantly lower input bias current (1.3 nA vs. 50 nA) and higher output current capability (80 mA vs. 50 mA). These characteristics make the TLV2460 series preferable for high-impedance input circuits and applications requiring substantial output drive capability. The TLV2460 operates at intermediate performance levels (1.6 V/µs slew rate, 6.4 MHz gain bandwidth product) between the low-speed TLV2450 and high-speed TLV2620.

Q3: Why is the TLV2450CD listed as obsolete?

A: The TLV2450CD is marked as obsolete product status, indicating discontinued manufacturing and limited future availability. New designs should select the TLV2450AIDR or TLV2450ID, both in active status with extended temperature range support (-40°C to 125°C vs. 0°C to 70°C for the CD variant).

Q4: Are all substitute parts compatible with the MAX4131ESA+ supply voltage range?

A: The MAX4131ESA+ operates at 2.7 V to 6.5 V supply span. All substitute parts support the 2.7 V minimum. However, the TLV2450 and TLV2460 series maximum supply voltage is 6 V, and the TLV2620IDR maximum is 5.5 V. Applications requiring operation above 6 V must retain the MAX4131ESA+. For designs operating at 6 V or below, all substitutes are compatible.

Q5: Which substitute part is recommended for new product designs?

A: For new designs requiring general-purpose amplification in 8-SOIC package, the TLV2460CDR is recommended. This part maintains active product status, offers improved input bias current and output current compared to the MAX4131ESA+, and provides adequate performance for most signal conditioning applications. The TLV2460CDR operates at 1.6 V/µs slew rate and 6.4 MHz gain bandwidth product with 2,110 units in current inventory.

Q6: What is the impact of Last Time Buy status on part selection?

A: Parts designated Last Time Buy (TLV2460AIDR, TLV2460ID, TLV2460IDR, TLV2620IDR) indicate manufacturer discontinuation with limited remaining production. These parts should not be selected for new designs unless existing inventory commitments or long-term supply agreements are established. Active status parts (MAX4131ESA+, TLV2450AIDR, TLV2450ID, TLV2460CD, TLV2460CDR) are preferred for new product development.

Q7: How do packaging options (Tube vs. Tape & Reel) affect substitution?

A: All substitute parts are available in 8-SOIC package with identical pinout and mechanical dimensions. Packaging differences (Tube vs. Tape & Reel) affect handling and assembly processes but do not impact electrical compatibility. The MAX4131ESA+ is supplied in Tube packaging. Substitutes are available in both Tube and Tape & Reel formats. Selection should match manufacturing equipment and assembly requirements.

Q8: Can the TLV2620IDR be used as a drop-in replacement for the MAX4131ESA+?

A: The TLV2620IDR shares the 8-SOIC package and pinout, enabling physical substitution. Electrically, the TLV2620IDR provides superior performance with 7 V/µs slew rate and 11 MHz gain bandwidth product. However, the maximum supply voltage is reduced to 5.5 V (vs. 6.5 V for MAX4131ESA+). Drop-in replacement is suitable for applications operating at 5.5 V or below. The TLV2620IDR is in Last Time Buy status with limited inventory (924 units), making it unsuitable for high-volume new designs.