LM2902VDG Equivalent & Substitute Parts

Part Overview

The LM2902VDG is a general-purpose operational amplifier integrated circuit containing four independent amplifier circuits in a 14-SOIC surface-mount package. Manufactured by onsemi, this device is classified as obsolete product status. The LM2902VDG operates across a wide supply voltage range of 3 V to 32 V and maintains performance across the industrial temperature range of -40°C to 125°C. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value
Amplifier Type	General Purpose
Number of Circuits	4
Gain Bandwidth Product	1 MHz
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°C to 125°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 of the LM2902VDG is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Electrical Compatibility Requirements:

Four independent amplifier circuits (mandatory)
General-purpose amplifier classification
Supply voltage range compatibility: minimum 3 V, maximum 32 V
Operating temperature range: -40°C to 125°C
Output current per channel: 40 mA
Input bias current: 90 nA (or lower)
Input offset voltage: 2 mV (or lower)
Gain bandwidth product: 1 MHz (or higher)

Mechanical Compatibility Requirements:

14-SOIC surface-mount package (0.154", 3.90mm width)
Pin-compatible footprint

Compliance Requirements:

ROHS3 compliance
REACH unaffected status
EAR99 classification

Substitute parts are grouped into two categories: direct equivalents (identical electrical specifications and active product status) and functional equivalents (enhanced specifications with active product status and full parameter compatibility).

Parameter Comparison

Part Number	Manufacturer	Product Status	Gain Bandwidth Product	Input Bias Current	Input Offset Voltage	Output Current / Channel	Supply Voltage (Min - Max)	Operating Temperature	Package	Inventory
LM2902VDG	onsemi	Obsolete	1 MHz	90 nA	2 mV	40 mA	3 V - 32 V	-40°C to 125°C	14-SOIC	3269 Pcs
LM2902VDR2G	onsemi	Active	1 MHz	90 nA	2 mV	40 mA	3 V - 32 V	-40°C to 125°C	14-SOIC	45400 Pcs
ADA4004-4ARZ	Analog Devices Inc.	Active	12 MHz	40 nA	40 µV	10 mA	10 V - 30 V	-40°C to 125°C	14-SOIC	1495 Pcs
ADA4004-4ARZ-R7	Analog Devices Inc.	Active	12 MHz	40 nA	40 µV	10 mA	10 V - 30 V	-40°C to 125°C	14-SOIC	4655 Pcs
ADA4004-4ARZ-RL	Analog Devices Inc.	Active	12 MHz	40 nA	40 µV	10 mA	10 V - 30 V	-40°C to 125°C	14-SOIC	2811 Pcs
AS324AMTR-E1	Diodes Incorporated	Active	Not specified	20 nA	2 mV	40 mA	3 V - 36 V	-40°C to 85°C	14-SOIC	20644 Pcs
AS324AMTR-G1	Diodes Incorporated	Active	Not specified	20 nA	2 mV	40 mA	3 V - 36 V	-40°C to 85°C	14-SOIC	1979 Pcs
AS324MTR-E1	Diodes Incorporated	Active	Not specified	20 nA	2 mV	40 mA	3 V - 36 V	-40°C to 85°C	14-SOIC	56300 Pcs
AS324MTR-G1	Diodes Incorporated	Active	Not specified	20 nA	2 mV	40 mA	3 V - 36 V	-40°C to 85°C	14-SOIC	196751 Pcs
BA10324AF-E2	Rohm Semiconductor	Active	500 kHz	20 nA	2 mV	35 mA	3 V - 32 V	-40°C to 85°C	14-SOIC	67700 Pcs
BA2902F-E2	Rohm Semiconductor	Active	500 kHz	20 nA	2 mV	30 mA	3 V - 32 V	-40°C to 125°C	14-SOIC	5300 Pcs

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

The LM2902VDR2G is the direct equivalent to the LM2902VDG. This part maintains identical electrical specifications including 1 MHz gain bandwidth product, 90 nA input bias current, 2 mV input offset voltage, and 40 mA output current per channel. The LM2902VDR2G is manufactured by onsemi (same manufacturer as the original part), carries active product status, and is ROHS3 compliant with unlimited moisture sensitivity rating. The primary difference is packaging format (Tape & Reel versus the original packaging), which does not affect electrical performance. Inventory availability is significantly higher at 45,400 pieces, ensuring long-term supply continuity.

Functional Equivalents with Enhanced Performance:

The Diodes Incorporated AS324 series (AS324AMTR-E1, AS324AMTR-G1, AS324MTR-E1, AS324MTR-G1) provides functional equivalence with improved specifications. These parts maintain the 40 mA output current per channel and 2 mV input offset voltage, but feature lower input bias current (20 nA versus 90 nA). The supply voltage range extends to 36 V maximum (versus 32 V), providing broader compatibility. Operating temperature range is limited to -40°C to 85°C (versus -125°C). These parts are active products with ROHS3 compliance and offer the highest inventory availability (up to 196,751 pieces for AS324MTR-G1).

Alternative Functional Equivalents:

The Rohm Semiconductor BA10324AF-E2 and BA2902F-E2 provide functional equivalence with lower gain bandwidth product (500 kHz versus 1 MHz). The BA2902F-E2 maintains the full -40°C to 125°C operating temperature range of the original part and is ROHS3 compliant. Output current per channel is reduced (30-35 mA versus 40 mA). These parts are suitable for applications where bandwidth requirements are less stringent.

The Analog Devices ADA4004 series (ADA4004-4ARZ, ADA4004-4ARZ-R7, ADA4004-4ARZ-RL) offers enhanced performance with 12 MHz gain bandwidth product and superior input offset voltage (40 µV). However, the minimum supply voltage requirement is 10 V (versus 3 V), which restricts compatibility with low-voltage applications. Output current per channel is reduced to 10 mA.

Compliance and Regulatory Status:

All substitute parts listed maintain ROHS3 compliance, REACH unaffected status, and EAR99 classification, matching the regulatory profile of the original LM2902VDG.

Frequently Asked Questions (FAQ)

Q: Can the LM2902VDR2G be used as a direct replacement for the LM2902VDG?

A: Yes. The LM2902VDR2G is electrically identical to the LM2902VDG, with all key parameters matching exactly: 1 MHz gain bandwidth product, 90 nA input bias current, 2 mV input offset voltage, 40 mA output current per channel, and 3 V to 32 V supply voltage range. The only difference is packaging format (Tape & Reel). Both parts are manufactured by onsemi and are ROHS3 compliant.

Q: What is the primary reason to substitute the LM2902VDG?

A: The LM2902VDG is classified as obsolete product status. The LM2902VDR2G is the recommended substitute because it is an active product with identical electrical specifications and significantly higher inventory availability (45,400 pieces versus 3,269 pieces).

Q: Are the Diodes Incorporated AS324 series parts compatible with the LM2902VDG?

A: The AS324 series parts are functionally compatible for most applications. They maintain the same 40 mA output current per channel and 2 mV input offset voltage. However, they feature lower input bias current (20 nA versus 90 nA) and extended supply voltage range (3 V to 36 V). The operating temperature range is limited to -40°C to 85°C, which may not be suitable for applications requiring the full -40°C to 125°C range of the original part.

Q: Can the Analog Devices ADA4004-4ARZ be used in place of the LM2902VDG?

A: The ADA4004-4ARZ is functionally compatible but with important limitations. It offers superior performance with 12 MHz gain bandwidth product and lower input offset voltage (40 µV). However, the minimum supply voltage is 10 V, which is incompatible with applications requiring 3 V operation. Output current per channel is reduced to 10 mA. This part is suitable only for applications with supply voltages of 10 V or higher.

Q: What is the difference between the various AS324 part numbers?

A: The AS324 series differs primarily in packaging format and moisture sensitivity rating. AS324AMTR-E1 and AS324MTR-E1 are Cut Tape and Tape & Reel variants respectively. AS324AMTR-G1 and AS324MTR-G1 are alternative variants with different moisture sensitivity levels. All variants maintain identical electrical specifications and 14-SOIC package compatibility.

Q: Why do some substitute parts have lower gain bandwidth product than the LM2902VDG?

A: The Rohm Semiconductor BA10324AF-E2 and BA2902F-E2 feature 500 kHz gain bandwidth product (versus 1 MHz). These parts are suitable for applications where bandwidth requirements are less stringent, such as low-frequency signal conditioning, filtering, and general-purpose amplification. The lower bandwidth typically results in lower power consumption and improved noise performance in bandwidth-limited applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, matching the regulatory status of the original LM2902VDG. All parts are also REACH unaffected and classified as EAR99.

Q: What is the moisture sensitivity level difference between substitute parts?

A: The LM2902VDG and most substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. The Analog Devices ADA4004 series and some Diodes Incorporated variants carry MSL 3 (168 Hours), which requires controlled storage and handling conditions. MSL 1 rated parts are preferred for applications with less stringent moisture control requirements.

Q: Can I use the BA2902F-E2 for applications requiring -40°C to 125°C operation?

A: Yes. The BA2902F-E2 maintains the full -40°C to 125°C operating temperature range of the original LM2902VDG. However, output current per channel is reduced to 30 mA (versus 40 mA), and gain bandwidth product is 500 kHz (versus 1 MHz). Verify that these reduced specifications are acceptable for your application.

Q: What inventory considerations should guide my substitution decision?

A: The AS324MTR-G1 offers the highest inventory availability at 196,751 pieces, followed by AS324MTR-E1 at 56,300 pieces. The LM2902VDR2G (direct equivalent) has 45,400 pieces available. If long-term supply security is critical, the AS324 series provides the strongest inventory position. The original LM2902VDG has only 3,269 pieces remaining and is obsolete.

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