MAX4076ESA Equivalent & Substitute Parts Reference

Part Overview

The MAX4076ESA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface-mount package. This device is classified as a rail-to-rail output amplifier within the GainAmp™ series and is currently marked as obsolete. The MAX4076ESA operates across a 2.5V to 5.5V supply range with a gain bandwidth product of 230 kHz, making it suitable for low-frequency signal conditioning and general analog applications.

Due to its obsolete status, sourcing new units from the original manufacturer is no longer guaranteed. Equivalent and substitute parts must be evaluated based on electrical performance parameters, package compatibility, and operational characteristics to ensure functional replacement in existing designs.

Key Parameters

Parameter	MAX4076ESA	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.09	V/µs
Gain Bandwidth Product	230	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	1.2	mV
Current - Supply	45	µA
Current - Output / Channel	20	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MAX4076ESA are evaluated based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Package type: 8-SOIC surface-mount form factor (0.154", 3.90mm width)
Number of circuits: Single amplifier configuration
Output type: Rail-to-rail capability
Supply voltage range: Minimum 2.5V to maximum 5.5V overlap
Operating temperature range: Minimum -40°C capability
Mounting type: Surface mount

Substitution Categories:

Category 1: Direct General-Purpose Replacements (TLV2451 Series) The TLV2451AIDR, TLV2451CDR, TLV2451CD, and TLV2451AID from Texas Instruments are general-purpose amplifiers with rail-to-rail output in 8-SOIC packaging. These parts maintain the same amplifier classification and package footprint as the MAX4076ESA. The TLV2451 series operates within the MAX4076ESA supply range (2.7V to 6V) and supports the required temperature range. These parts are active products with RoHS3 compliance, addressing the obsolescence and compliance concerns of the original part.

Category 2: Enhanced Performance Alternative (LMP2021 Series) The LMP2021MA/NOPB and LMP2021MAX/NOPB from Texas Instruments represent a performance upgrade path. While these zero-drift amplifiers operate in the same 8-SOIC package and support the required supply voltage range (2.2V to 5.5V), they offer significantly improved electrical characteristics including lower input offset voltage and higher gain bandwidth product. These parts are active products with RoHS3 compliance.

Parameter Comparison

Parameter	MAX4076ESA	TLV2451AIDR	TLV2451CDR	TLV2451CD	TLV2451AID	LMP2021MA/NOPB	LMP2021MAX/NOPB	Unit
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	Zero-Drift	Zero-Drift	—
Number of Circuits	1	1	1	1	1	1	1	—
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	—	—	—
Slew Rate	0.09	0.11	0.11	0.11	0.11	2.6	2.6	V/µs
Gain Bandwidth Product	230	220	220	220	220	5000	5000	kHz
Current - Input Bias	1	500	500	500	500	25	25	pA
Voltage - Input Offset	1.2	300	300	300	300	0.4	0.4	µV
Current - Supply	45	23	23	23	23	1100	1100	µA
Current - Output / Channel	20	10	10	10	10	50	50	mA
Voltage - Supply Span (Min)	2.5	2.7	2.7	2.7	2.7	2.2	2.2	V
Voltage - Supply Span (Max)	5.5	6	6	6	6	5.5	5.5	V
Operating Temperature (Min)	-40	-40	0	0	-40	-40	-40	°C
Operating Temperature (Max)	70	125	70	70	125	125	125	°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	—
Product Status	Obsolete	Active	Active	Active	Obsolete	Active	Active	—
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

For Direct Replacement (Closest Electrical Match):

The TLV2451AIDR and TLV2451AID are the most appropriate direct replacements for the MAX4076ESA. Both parts maintain general-purpose amplifier classification with rail-to-rail output in identical 8-SOIC packaging. The TLV2451AIDR is the recommended choice due to its active product status and availability in Tape & Reel packaging, which is standard for production environments. The TLV2451AID offers the same electrical performance with extended temperature range (-40°C to 125°C) but carries obsolete status.

The TLV2451CDR and TLV2451CD provide equivalent electrical performance to the TLV2451AIDR series with active product status and RoHS3 compliance. The TLV2451CDR is packaged in Tape & Reel format suitable for automated assembly, while TLV2451CD is supplied in Tube packaging. Both parts operate within the industrial temperature range (0°C to 70°C), matching the MAX4076ESA upper temperature limit.

For Performance Enhancement:

The LMP2021MA/NOPB and LMP2021MAX/NOPB represent an upgrade path when improved precision is required. These zero-drift amplifiers deliver significantly lower input offset voltage (0.4 µV versus 1.2 mV) and higher gain bandwidth product (5 MHz versus 230 kHz). The LMP2021MAX/NOPB is supplied in Tape & Reel packaging with 2887 pieces in stock, while LMP2021MA/NOPB is supplied in Tube packaging. Both are active products with RoHS3 compliance and extended temperature range (-40°C to 125°C).

Compliance Considerations:

All recommended substitute parts carry RoHS3 compliance status, addressing the non-compliant status of the obsolete MAX4076ESA. This compliance upgrade is critical for new designs and manufacturing environments subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can the TLV2451 series directly replace the MAX4076ESA without circuit modifications?

A: The TLV2451 series maintains the same 8-SOIC package footprint and pinout compatibility with the MAX4076ESA. Both are single-circuit, rail-to-rail general-purpose amplifiers operating within overlapping supply voltage ranges. Direct PCB substitution is possible. However, the TLV2451 series exhibits slightly different electrical characteristics (lower input bias current, higher slew rate), which may affect circuit performance in precision applications. Circuit validation is necessary for critical applications.

Q: What is the difference between TLV2451AIDR, TLV2451CDR, and TLV2451IDR?

A: These three variants are identical in electrical performance and package type (8-SOIC). The differences are in temperature rating and packaging format. TLV2451AIDR operates -40°C to 125°C in Tape & Reel format. TLV2451CDR operates 0°C to 70°C in Tape & Reel format. TLV2451IDR operates -40°C to 125°C in Cut Tape & Digi-Reel® format. Select based on your application temperature requirements and assembly equipment compatibility.

Q: Should I use the LMP2021 series instead of the TLV2451 series?

A: The LMP2021 series offers superior electrical performance with zero-drift architecture, delivering 3000 times lower input offset voltage and 21 times higher gain bandwidth product. Use the LMP2021 series when your application requires precision signal conditioning, low-offset amplification, or high-frequency response. Use the TLV2451 series for direct electrical replacement with minimal circuit redesign. The LMP2021 series draws higher supply current (1.1 mA versus 23 µA), which may impact power budget in battery-powered applications.

Q: Are all substitute parts available in the same packaging options?

A: No. The MAX4076ESA packaging format is not specified in available data. The TLV2451 series is available in multiple packaging formats: Tape & Reel (AIDR, CDR, IDR variants), Tube (CD variant), and unspecified format (AID variant). The LMP2021 series is available in Tube (MA/NOPB) and Tape & Reel (MAX/NOPB) formats. Verify packaging compatibility with your assembly process before selection.

Q: What is the inventory status of these substitute parts?

A: TLV2451IDR has the highest inventory (3010 pieces), followed by LMP2021MAX/NOPB (2887 pieces) and TLV2451AIDR (1900 pieces). All substitute parts are listed as in-stock new original units. Verify current availability with your supplier before committing to production orders.

Q: Is the TLV2451AID a viable substitute despite its obsolete status?

A: The TLV2451AID is electrically equivalent to the active TLV2451AIDR variant and offers extended temperature range (-40°C to 125°C). However, its obsolete product status makes it unsuitable for new designs or long-term production. Use only if existing inventory is available and long-term supply is not required. Prioritize active products (TLV2451AIDR, TLV2451CDR, TLV2451IDR, or LMP2021 series) for new applications.

Q: What are the key electrical differences between the MAX4076ESA and its substitutes?

A: The MAX4076ESA has lower slew rate (0.09 V/µs) compared to TLV2451 variants (0.11 V/µs) and significantly lower than LMP2021 variants (2.6 V/µs). Input bias current is exceptionally low in the MAX4076ESA (1 pA) but higher in TLV2451 (500 pA) and LMP2021 (25 pA). Input offset voltage is 1.2 mV in MAX4076ESA, 300 µV in TLV2451, and 0.4 µV in LMP2021. Supply current is lowest in TLV2451 (23 µA), moderate in MAX4076ESA (45 µA), and highest in LMP2021 (1.1 mA). These differences affect circuit performance in precision, low-power, and high-speed applications.

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