LM2902EDR2G Equivalent & Substitute Parts

Part Overview

The LM2902EDR2G is a general-purpose operational amplifier manufactured by onsemi, configured as a 4-circuit integrated circuit in a 14-SOIC surface mount package. This device is actively produced and widely used in analog signal processing applications requiring low-cost, general-purpose amplification across industrial and commercial temperature ranges.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for functionally equivalent alternatives from different manufacturers. The LM2902EDR2G has established equivalents across multiple manufacturers, each offering comparable electrical performance within defined parameter tolerances.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Current - Input Bias	90	nA
Voltage - Input Offset	2	mV
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	32	V
Operating Temperature	-40 to 105	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the LM2902EDR2G is determined by the following critical parameters:

Mandatory Matching Criteria:

Number of Circuits: 4
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Amplifier Type: General Purpose (preferred for direct substitution)

Electrical Compatibility Criteria:

Voltage - Supply Span (Min): 3 V or lower
Voltage - Supply Span (Max): 32 V or higher
Current - Output / Channel: 40 mA or greater
Operating Temperature Range: Must encompass -40°C to 105°C or be compatible with application requirements

Acceptable Variation Parameters:

Current - Input Bias: Values lower than 90 nA are acceptable (improved performance)
Voltage - Input Offset: Values at or below 2 mV are acceptable
Slew Rate: Not specified for main part; J-FET alternatives provide higher slew rates

Substitute parts are grouped into two categories: direct general-purpose equivalents and J-FET alternatives. General-purpose substitutes maintain identical amplifier topology and performance characteristics. J-FET alternatives offer superior input bias current performance but operate within different temperature ranges and may require design verification for specific applications.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Input Bias (nA)	Input Offset (mV)	Output / Channel (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
LM2902EDR2G	onsemi	General Purpose	90	2	40	3	32	-40 to 105	Active
AS324MTR-G1	Diodes Incorporated	General Purpose	20	2	40	3	36	-40 to 85	Active
LF347BD	Texas Instruments	J-FET	0.05	3	31	7	36	0 to 70	Obsolete
LF347D	STMicroelectronics	J-FET	0.02	3	40	44	44	0 to 70	Active
LF347DR	Texas Instruments	J-FET	0.05	5	40	7	36	0 to 70	Active
LM224DRG3	Texas Instruments	General Purpose	20	3	30	3	30	-25 to 85	Last Time Buy
LM224DT	STMicroelectronics	General Purpose	20	2	40	3	30	-40 to 105	Active
LM248DT	STMicroelectronics	General Purpose	30	1	25	44	44	-40 to 105	Active
LM2902QS14-13	Diodes Incorporated	General Purpose	20	2	40	2	36	-40 to 125	Active
LM2902S14-13	Diodes Incorporated	General Purpose	20	2	40	3	36	-40 to 125	Active
LM2902YDT	STMicroelectronics	General Purpose	20	2	60	3	30	-40 to 125	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

The following parts are recommended as primary substitutes based on matching electrical specifications, active product status, and compliance certifications:

LM224DT (STMicroelectronics) — This part provides the closest electrical match to the LM2902EDR2G with identical input offset voltage (2 mV), matching output current capability (40 mA), and extended operating temperature range (-40°C to 105°C). Product status is Active with ROHS3 compliance and MSL 1 rating. Packaging format is Cut Tape (CT) & Digi-Reel®.

LM2902S14-13 (Diodes Incorporated) — This part maintains identical input bias current (20 nA), input offset voltage (2 mV), and output current (40 mA). Supply voltage range extends to 36 V maximum, exceeding the main part specification. Operating temperature range extends to 125°C. Product status is Active with ROHS3 compliance. Packaging is Tape & Reel (TR).

LM2902QS14-13 (Diodes Incorporated) — This automotive-qualified variant (AEC-Q100) offers identical electrical performance to LM2902S14-13 with extended temperature range to 125°C. Suitable for applications requiring automotive-grade components. Product status is Active.

AS324MTR-G1 (Diodes Incorporated) — This part offers improved input bias current (20 nA versus 90 nA) while maintaining 2 mV input offset voltage and 40 mA output current. Supply voltage range extends to 36 V. Operating temperature range is -40°C to 85°C. Product status is Active with ROHS3 compliance.

Secondary Substitutes (Conditional Use):

LM2902YDT (STMicroelectronics) — This push-pull output variant provides enhanced output current capability (60 mA) and extended temperature range (-40°C to 125°C). Automotive-qualified (AEC-Q100). Use when higher output drive capability is required. Product status is Active.

LF347DR (Texas Instruments) — This J-FET alternative offers superior input bias current (50 pA) for applications requiring extremely low input current. Operating temperature range is 0°C to 70°C, which does not cover the full -40°C to 105°C range of the main part. Product status is Active. Use only when input bias current performance is critical and temperature range limitation is acceptable.

Not Recommended:

LF347BD (Texas Instruments) — Product status is Obsolete. Avoid for new designs.

LM224DRG3 (Texas Instruments) — Product status is Last Time Buy. Inventory depletion is imminent. Not suitable for long-term production.

LM248DT (STMicroelectronics) — Output current per channel (25 mA) is below the 40 mA specification of the main part. Supply voltage specification (44 V fixed) does not match the variable range requirement. Use only when output current limitation is acceptable.

Frequently Asked Questions (FAQ)

Q: Can I use the AS324MTR-G1 as a direct replacement for the LM2902EDR2G?

A: The AS324MTR-G1 is electrically compatible for most applications. It provides improved input bias current (20 nA versus 90 nA), maintains identical input offset voltage (2 mV) and output current (40 mA), and operates across the required supply voltage range (3 V to 36 V). The operating temperature range is -40°C to 85°C, which covers the lower portion of the main part's range (-40°C to 105°C). Use this substitute when operation above 85°C is not required.

Q: What is the difference between general-purpose and J-FET amplifier types?

A: General-purpose amplifiers use bipolar input stages and are suitable for standard signal processing applications. J-FET amplifiers use field-effect transistor input stages, providing dramatically lower input bias current (picoamperes versus nanoamperes). J-FET types are preferred for high-impedance signal sources or applications requiring minimal input current draw. The LF347 series represents J-FET alternatives but operates within a narrower temperature range (0°C to 70°C).

Q: Is the LM2902S14-13 suitable for automotive applications?

A: The LM2902S14-13 is not automotive-qualified. For automotive applications, use the LM2902QS14-13, which carries AEC-Q100 qualification and is specifically designed for automotive-grade reliability.

Q: Why does the LM248DT show a fixed supply voltage of 44 V?

A: The LM248DT specification indicates a fixed supply voltage of 44 V, which differs from the variable supply range (3 V to 32 V) of the LM2902EDR2G. This part is not recommended as a direct substitute due to this supply voltage incompatibility.

Q: Can I use the LF347DR in place of the LM2902EDR2G in a design operating at 100°C?

A: No. The LF347DR has a maximum operating temperature of 70°C, which is below the 100°C requirement. Using this part outside its specified temperature range will result in unpredictable performance and potential device failure.

Q: What does "Last Time Buy" status mean for the LM224DRG3?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this product. Existing inventory will be sold until depletion, after which the part will no longer be available. This part should not be selected for new designs or long-term production requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference carry ROHS3 compliance certification, matching the environmental compliance status of the main part LM2902EDR2G.

Q: What is the significance of Moisture Sensitivity Level (MSL)?

A: MSL indicates the maximum time a component can be exposed to moisture at specified temperature and humidity conditions before soldering. MSL 1 (Unlimited) means the part has no moisture sensitivity restrictions and can be stored indefinitely under normal conditions. MSL 3 (168 Hours) requires controlled storage and handling. The LM2902EDR2G carries MSL 1 rating. Most substitutes also carry MSL 1, with the exception of LM2902S14-13 (MSL 3).

Q: Can I mix different substitute parts in the same circuit board design?

A: Yes, provided all selected parts meet the electrical requirements of your circuit design. However, for manufacturing consistency and supply chain management, it is recommended to standardize on a single substitute part number per design revision.

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