LM2902AMX Equivalent & Substitute Parts

Part Overview

The LM2902AMX is a general-purpose operational amplifier integrated circuit manufactured by onsemi, featuring four independent amplifier circuits in a 14-SOIC surface mount package. This device is classified as obsolete and is qualified to AEC-Q100 automotive standards with an operating temperature range of -40°C to 85°C. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and component sourcing in applications requiring automotive-grade general-purpose amplifiers.

Key Parameters

Parameter	LM2902AMX Value
Amplifier Type	General Purpose
Number of Circuits	4
Current - Input Bias	40 nA
Voltage - Input Offset	1.5 mV
Current - Supply	1 mA
Current - Output / Channel	20 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	26 V
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM2902AMX is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Amplifier Type: General Purpose or CMOS
Number of Circuits: 4
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Electrical Compatibility Parameters:

Voltage - Supply Span (Min): 3 V or lower
Voltage - Supply Span (Max): 16 V or higher (minimum requirement for LM2902AMX 26 V operation is not met by all substitutes; selection depends on application voltage requirements)
Current - Output / Channel: 20 mA or higher
Operating Temperature: Must support -40°C minimum for automotive applications

Substitute parts are grouped into two categories: direct onsemi replacements and Texas Instruments alternatives. Direct replacements maintain identical base product numbers and manufacturer lineage. Texas Instruments alternatives provide functional equivalence through comparable electrical specifications within the 14-SOIC package format.

Parameter Comparison

Part Number	Manufacturer	Product Status	Amplifier Type	Number of Circuits	Current - Input Bias	Voltage - Input Offset	Current - Output / Channel	Voltage - Supply Span (Min)	Voltage - Supply Span (Max)	Operating Temperature	Package / Case
LM2902AMX	onsemi	Obsolete	General Purpose	4	40 nA	1.5 mV	20 mA	3 V	26 V	-40°C ~ 85°C	14-SOIC
LM2902DR2G	onsemi	Active	General Purpose	4	90 nA	2 mV	40 mA	3 V	32 V	-40°C ~ 105°C	14-SOIC
TLC274ACD	Texas Instruments	Obsolete	General Purpose	4	0.6 pA	900 µV	30 mA	3 V	16 V	0°C ~ 70°C	14-SOIC
TLC274ACDR	Texas Instruments	Active	General Purpose	4	0.6 pA	900 µV	30 mA	3 V	16 V	0°C ~ 70°C	14-SOIC
TLC274CD	Texas Instruments	Obsolete	General Purpose	4	0.6 pA	1.1 mV	30 mA	3 V	16 V	0°C ~ 70°C	14-SOIC
TLC274CDR	Texas Instruments	Active	General Purpose	4	0.6 pA	1.1 mV	30 mA	3 V	16 V	0°C ~ 70°C	14-SOIC
TLC274MD	Texas Instruments	Obsolete	General Purpose	4	0.6 pA	1.1 mV	30 mA	4 V	16 V	-55°C ~ 125°C	14-SOIC
TLC27L4ACD	Texas Instruments	Last Time Buy	CMOS	4	0.7 pA	1.1 mV	30 mA	3 V	16 V	0°C ~ 70°C	14-SOIC
TLC27L4ACDR	Texas Instruments	Active	CMOS	4	0.7 pA	1.1 mV	30 mA	3 V	16 V	0°C ~ 70°C	14-SOIC
TLC27L4AID	Texas Instruments	Last Time Buy	CMOS	4	0.7 pA	1.1 mV	30 mA	4 V	16 V	-40°C ~ 85°C	14-SOIC
TLC27L4AIDR	Texas Instruments	Active	CMOS	4	0.7 pA	1.1 mV	30 mA	4 V	16 V	-40°C ~ 85°C	14-SOIC

Engineering Selection Recommendations

Direct Replacement (Recommended for Continuity):

LM2902DR2G is the active production equivalent from onsemi. This part maintains the same base product number (LM2902) and manufacturer lineage. It offers improved specifications including higher output current (40 mA vs. 20 mA), extended maximum supply voltage (32 V vs. 26 V), and extended operating temperature range (-40°C to 105°C vs. -40°C to 85°C). The part is ROHS3 compliant and carries MSL 1 rating identical to the original. This substitution requires no design modification and is suitable for direct PCB replacement.

Active Production Alternatives (Texas Instruments):

TLC274ACDR and TLC274CDR are active production general-purpose amplifiers from Texas Instruments in 14-SOIC packaging. Both parts meet the four-circuit requirement and 14-SOIC package specification. However, the maximum supply voltage is limited to 16 V, which is below the LM2902AMX specification of 26 V. These parts are suitable only for applications operating within 3 V to 16 V supply range. TLC274ACDR is available in Tape & Reel packaging with higher inventory (16,291 pcs).

CMOS Alternatives (Extended Temperature Range):

TLC27L4AIDR is an active production CMOS amplifier from Texas Instruments offering the automotive temperature range (-40°C to 85°C) matching the original LM2902AMX. This part is suitable for low-power applications due to significantly reduced supply current (57 µA per four channels vs. 1 mA). The 14-SOIC package and ROHS3 compliance are maintained. Maximum supply voltage is 16 V, limiting use to applications within this range.

Product Status Considerations:

Parts with "Active" status are recommended for new designs and ongoing production. Parts with "Obsolete" or "Last Time Buy" status should be evaluated for long-term supply chain risk. LM2902DR2G is the only active onsemi product in this family. Among Texas Instruments alternatives, TLC274ACDR, TLC274CDR, TLC27L4ACDR, and TLC27L4AIDR carry active status.

Frequently Asked Questions (FAQ)

Q: Can LM2902DR2G be used as a direct replacement for LM2902AMX without circuit modification?

A: Yes. LM2902DR2G is the active production equivalent from onsemi with identical package (14-SOIC), circuit count (4), and base product number (LM2902). The improved electrical specifications (higher output current, extended supply voltage, and extended temperature range) are backward compatible with designs specified for LM2902AMX. No circuit modification is required.

Q: What is the primary limitation of Texas Instruments TLC274 series substitutes?

A: The maximum supply voltage specification is 16 V, compared to 26 V for the LM2902AMX. TLC274 series parts are suitable only for applications operating within the 3 V to 16 V supply range. Applications requiring operation above 16 V must use LM2902DR2G or evaluate alternative device families.

Q: Are CMOS alternatives (TLC27L4 series) suitable for direct replacement?

A: CMOS alternatives provide functional equivalence in 14-SOIC packaging with four circuits. However, they differ in amplifier type (CMOS vs. General Purpose), supply current characteristics, and maximum supply voltage (16 V). CMOS alternatives are suitable only for applications where low power consumption is a design requirement and supply voltage does not exceed 16 V. Circuit performance characteristics differ due to CMOS technology; verification is necessary for noise-sensitive applications.

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

A: LM2902DR2G from onsemi is the recommended choice for long-term availability, as it carries "Active" product status and is manufactured by the original supplier. Among Texas Instruments alternatives, TLC274ACDR and TLC27L4AIDR are active production parts with substantial inventory levels (16,291 pcs and 1,750 pcs respectively).

Q: What is the significance of the 14-SOIC package specification?

A: The 14-SOIC (0.154", 3.90mm Width) package is a surface mount standard that ensures mechanical and electrical compatibility across all listed substitutes. All substitute parts use identical package dimensions and pin configuration, enabling direct PCB footprint compatibility without layout modification.

Q: Can TLC27L4AID be used in automotive applications requiring -40°C to 85°C operation?

A: Yes. TLC27L4AID and TLC27L4AIDR both support the -40°C to 85°C operating temperature range required for automotive applications. However, TLC27L4AID carries "Last Time Buy" status, indicating limited future availability. TLC27L4AIDR is the active production equivalent with identical specifications and is recommended for new designs.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel® for component-level procurement, Tape & Reel (TR) for automated assembly, and Tube for manual handling. LM2902DR2G is available in Cut Tape & Digi-Reel® format. TLC274ACDR and TLC27L4ACDR are available in Tape & Reel format. Selection depends on production volume and assembly process requirements.

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