MAX4131ESA Equivalent & Substitute Parts

Part Overview

The MAX4131ESA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and is designed for applications requiring single-circuit amplification with moderate bandwidth and slew rate performance. The MAX4131ESA is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across electrical performance parameters, package form factor, and supply voltage specifications to ensure direct replacement capability in existing circuit designs.

Key Parameters

Parameter	Value	Unit
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	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	6.5	V
Operating Temperature	-40 to 85	°C
Slew Rate	4	V/µs
Gain Bandwidth Product	10	MHz
Current - Input Bias	50	nA
Voltage - Input Offset	200	µV
Current - Supply	1	mA
Current - Output / Channel	50	mA
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4131ESA is determined by strict adherence to the following criteria:

Primary Compatibility Requirements:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — mandatory for PCB layout compatibility
Mounting Type: Surface Mount — required for assembly process compatibility
Output Type: Rail-to-Rail — functional requirement for signal swing capability
Voltage - Supply Span: Minimum 2.7 V and maximum range covering 6.5 V operation
Operating Temperature: Support for -40°C to 85°C minimum

Secondary Performance Parameters:

Slew Rate: 4 V/µs or greater
Gain Bandwidth Product: 10 MHz or greater
Current - Output / Channel: 50 mA or greater
Current - Supply: 1 mA or less preferred for power efficiency

Substitute parts are grouped into two categories based on performance tier:

Tier 1 (Direct Equivalent): MAX4131ESA+ — Identical electrical specifications with active product status and improved RoHS compliance.

Tier 2 (Functional Substitutes): Texas Instruments TLV series parts meeting all primary compatibility requirements with varying performance characteristics in secondary parameters.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Product Status	RoHS Status
MAX4131ESA	Analog Devices	4	10	50	200	1000	50	-40 to 85	Obsolete	Non-compliant
MAX4131ESA+	Analog Devices	4	10	50	200	1000	50	-40 to 85	Active	ROHS3 Compliant
TLV2450AIDR	Texas Instruments	0.11	0.22	0.5	300	23	10	-40 to 125	Active	ROHS3 Compliant
TLV2450CD	Texas Instruments	0.11	0.22	0.5	300	23	10	0 to 70	Obsolete	ROHS3 Compliant
TLV2450ID	Texas Instruments	0.11	0.22	0.5	300	23	10	-40 to 125	Active	ROHS3 Compliant
TLV2460AIDR	Texas Instruments	1.6	6.4	1.3	500	550	80	-40 to 125	Last Time Buy	ROHS3 Compliant
TLV2460CD	Texas Instruments	1.6	6.4	1.3	500	550	80	0 to 70	Active	ROHS3 Compliant
TLV2460CDR	Texas Instruments	1.6	6.4	1.3	500	550	80	0 to 70	Active	ROHS3 Compliant
TLV2460ID	Texas Instruments	1.6	6.4	1.3	500	550	80	-40 to 125	Last Time Buy	ROHS3 Compliant
TLV2460IDR	Texas Instruments	1.6	6.4	1.3	500	550	80	-40 to 125	Last Time Buy	ROHS3 Compliant
TLV2620IDR	Texas Instruments	7	11	2	250	800	28	-40 to 125	Last Time Buy	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MAX4131ESA+

The MAX4131ESA+ is the direct equivalent replacement for the obsolete MAX4131ESA. It maintains identical electrical specifications across all parameters while offering active product status and ROHS3 compliance. This part is suitable for all applications currently using the MAX4131ESA without circuit modification. Inventory availability is confirmed at 3658 units in new original condition.

Secondary Recommendations: TLV2460 Series (Texas Instruments)

The TLV2460 series (TLV2460AIDR, TLV2460CD, TLV2460CDR, TLV2460ID, TLV2460IDR) provides functional substitution with enhanced performance characteristics. These parts exceed the MAX4131ESA in slew rate (1.6 V/µs vs. 4 V/µs specification), gain bandwidth product (6.4 MHz vs. 10 MHz), and output current capability (80 mA vs. 50 mA). All TLV2460 variants maintain 8-SOIC packaging, rail-to-rail output, and supply voltage compatibility. Multiple product status options exist: TLV2460CD and TLV2460CDR are active with commercial temperature range (0°C to 70°C), while TLV2460AIDR, TLV2460ID, and TLV2460IDR are Last Time Buy status with extended temperature range (-40°C to 125°C). All variants are ROHS3 compliant.

Tertiary Recommendations: TLV2450 Series (Texas Instruments)

The TLV2450 series (TLV2450AIDR, TLV2450CD, TLV2450ID) offers low-power operation with significantly reduced supply current (23 µA vs. 1 mA). These parts are suitable for battery-powered or ultra-low-power applications where the MAX4131ESA's performance specifications exceed application requirements. TLV2450AIDR and TLV2450ID are active with extended temperature range (-40°C to 125°C). TLV2450CD is obsolete with commercial temperature range (0°C to 70°C). All variants are ROHS3 compliant and maintain 8-SOIC packaging.

Alternative: TLV2620IDR (Texas Instruments)

The TLV2620IDR provides the highest performance tier with 7 V/µs slew rate and 11 MHz gain bandwidth product, exceeding MAX4131ESA specifications. This part is designated Last Time Buy status and is suitable for applications requiring superior dynamic performance. Operating temperature range extends to -40°C to 125°C with ROHS3 compliance. Note: Output current capability (28 mA) is lower than MAX4131ESA (50 mA).

Compliance Considerations:

All recommended substitute parts carry ROHS3 compliance certification, addressing regulatory requirements for new designs. The MAX4131ESA is RoHS non-compliant; therefore, MAX4131ESA+ or Texas Instruments alternatives are required for applications subject to RoHS directives. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can MAX4131ESA+ be used as a direct drop-in replacement for MAX4131ESA?

A: Yes. The MAX4131ESA+ maintains identical electrical specifications, 8-SOIC package form factor, and surface mount compatibility. No circuit modifications are required. The primary difference is active product status and ROHS3 compliance certification.

Q: What are the key differences between MAX4131ESA and TLV2460 series substitutes?

A: The TLV2460 series exhibits lower slew rate (1.6 V/µs vs. 4 V/µs) and lower gain bandwidth product (6.4 MHz vs. 10 MHz), but provides higher output current capability (80 mA vs. 50 mA) and lower input bias current (1.3 nA vs. 50 nA). All maintain 8-SOIC packaging and rail-to-rail output. Circuit performance impact depends on application bandwidth and output current requirements.

Q: Are TLV2450 series parts suitable replacements for MAX4131ESA?

A: TLV2450 series parts meet primary compatibility requirements (8-SOIC package, rail-to-rail output, supply voltage range) but exhibit significantly reduced performance in slew rate (0.11 V/µs) and gain bandwidth product (0.22 MHz). These parts are suitable only for applications where MAX4131ESA performance specifications exceed actual circuit requirements, particularly in low-power or low-frequency designs.

Q: What packaging options are available for substitute parts?

A: All substitute parts are available in 8-SOIC surface mount package with 0.154" (3.90mm) width, maintaining PCB layout compatibility. Packaging variants differ in shipping format: Tube packaging (standard), Tape & Reel (TR) for automated assembly, and unspecified packaging for certain obsolete variants. Verify packaging selection with procurement requirements.

Q: Which substitute part offers the best long-term availability?

A: MAX4131ESA+ and TLV2460CD/TLV2460CDR are designated Active product status, indicating ongoing manufacturing and long-term availability. TLV2450AIDR and TLV2450ID are also Active. Parts designated Last Time Buy (TLV2460AIDR, TLV2460ID, TLV2460IDR, TLV2620IDR) have limited production windows and should be evaluated for long-term supply chain planning.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts carry ROHS3 Compliant certification. The original MAX4131ESA is RoHS non-compliant; therefore, substitution with compliant alternatives is necessary for applications subject to RoHS directives.

Q: What is the operating temperature range consideration for substitute selection?

A: The MAX4131ESA operates from -40°C to 85°C. Substitute parts offer two temperature ranges: commercial (0°C to 70°C) and industrial (-40°C to 125°C). For applications requiring -40°C to 85°C operation, select parts with -40°C to 125°C rating (MAX4131ESA+, TLV2450AIDR, TLV2450ID, TLV2460AIDR, TLV2460ID, TLV2460IDR, TLV2620IDR). Commercial-range parts (TLV2450CD, TLV2460CD, TLV2460CDR) are limited to 0°C to 70°C.

Q: How does supply current affect substitute selection?

A: The MAX4131ESA draws 1 mA supply current. TLV2450 series parts consume only 23 µA, suitable for battery-powered applications. TLV2460 series parts draw 550 µA, and TLV2620IDR draws 800 µA. For power-sensitive designs, TLV2450 series provides significant power reduction. For applications with adequate power budget, TLV2460 or TLV2620 series offer superior dynamic performance.

Q: What output current capability should be considered?

A: The MAX4131ESA provides 50 mA output current per channel. TLV2460 series offers 80 mA (exceeding specification), while TLV2450 series provides only 10 mA and TLV2620IDR provides 28 mA. Applications requiring output currents exceeding 50 mA should select TLV2460 series. Applications with output current requirements below 28 mA can use any substitute part.

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