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LM2902M Equivalent & Substitute Parts
Part Overview
The LM2902M 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 LM2902M operates across a wide supply voltage range of 3V to 32V and maintains performance across the industrial temperature range of -40°C to 105°C. Due to its obsolete status, equivalent and substitute parts with active product status are necessary for new designs and ongoing production requirements. Substitute devices must maintain electrical compatibility across critical parameters including input bias current, input offset voltage, output current capability, and supply voltage specifications.
Substiute Parts
Key Parameters
| Parameter | LM2902M 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°C ~ 105°C | - |
| Mounting Type | Surface Mount | - |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | - |
| Product Status | Obsolete | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | - |
Substitute Part Grouping Explanation
Substitute parts for the LM2902M are classified into two primary categories based on electrical and mechanical compatibility:
Category 1: Direct Electrical Equivalents (LM2902 Base Product Family)
These parts maintain identical electrical specifications to the LM2902M across all critical parameters: 90 nA input bias current, 2 mV input offset voltage, 40 mA output current per channel, and 3V to 32V supply voltage range. All devices feature four independent general-purpose amplifier circuits in 14-SOIC packaging. These substitutes differ only in product status (active versus obsolete) and packaging format (Cut Tape & Digi-Reel, Tape & Reel, or alternative temperature grades). Direct equivalents include LM2902DR2G, LM2902VDR2G, and NCV2902DR2G.
Category 2: Compatible Alternatives (LM324 Base Product Family)
These parts share the same 14-SOIC package, four-circuit configuration, and supply voltage range (3V to 32V). However, they exhibit variations in operating temperature range and input bias current specifications. LM324ADR2G and LM324DR2G operate at 0°C to 70°C (narrower than LM2902M), while LM324ADR2G specifies 40 nA input bias current (lower than LM2902M's 90 nA). These devices are suitable for applications where the narrower temperature range and lower input bias current are acceptable.
Category 3: Alternative Technology Substitutes
ADTL084ARZ (Analog Devices) and LF347M/NOPB (Texas Instruments) represent J-FET amplifier technology with significantly different electrical characteristics. These devices feature substantially lower input bias current (2 pA and 50 pA respectively), higher slew rates (20V/µs and 13V/µs), and higher gain bandwidth products (5 MHz and 4 MHz). These alternatives are suitable only for applications requiring superior input impedance and frequency response characteristics.
Category 4: Cross-Manufacturer General Purpose Alternatives
AS324MTR-G1 (Diodes Incorporated) and LM224D (STMicroelectronics) provide general-purpose four-circuit amplifier solutions in 14-SOIC packaging with compatible supply voltage ranges. These devices feature variations in input bias current (20 nA for AS324MTR-G1), operating temperature ranges, and slew rate specifications.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Input Bias Current (nA) | Input Offset Voltage (mV) | Output Current/Channel (mA) | Supply Voltage Min (V) | Supply Voltage Max (V) | Operating Temperature (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|
| LM2902M | onsemi | Obsolete | 90 | 2 | 40 | 3 | 32 | -40 ~ 105 | 14-SOIC |
| LM2902DR2G | onsemi | Active | 90 | 2 | 40 | 3 | 32 | -40 ~ 105 | 14-SOIC |
| LM224DR2G | onsemi | Active | 90 | 2 | 40 | 3 | 32 | -25 ~ 85 | 14-SOIC |
| LM2902VDR2G | onsemi | Active | 90 | 2 | 40 | 3 | 32 | -40 ~ 125 | 14-SOIC |
| LM324ADR2G | onsemi | Active | 40 | 2 | 40 | 3 | 32 | 0 ~ 70 | 14-SOIC |
| LM324DR2G | onsemi | Active | 90 | 2 | 40 | 3 | 32 | 0 ~ 70 | 14-SOIC |
| NCV2902DR2G | onsemi | Active | 90 | 2 | 40 | 3 | 32 | -40 ~ 125 | 14-SOIC |
| ADTL084ARZ | Analog Devices Inc. | Active | 0.002 | 1.5 | 27 | 8 | 36 | -40 ~ 125 | 14-SOIC |
| AS324MTR-G1 | Diodes Incorporated | Active | 20 | 2 | 40 | 3 | 36 | -40 ~ 85 | 14-SOIC |
| LF347M/NOPB | Texas Instruments | Active | 0.05 | 5 | - | 10 | 36 | 0 ~ 70 | 14-SOIC |
| LM224D | STMicroelectronics | Active | 20 | 2 | 40 | 3 | 30 | -40 ~ 105 | 14-SOIC |
Engineering Selection Recommendations
Primary Substitutes for Direct Replacement:
LM2902DR2G is the recommended primary substitute for LM2902M applications. This device maintains identical electrical specifications (90 nA input bias current, 2 mV input offset voltage, 40 mA output current per channel) and supply voltage range (3V to 32V). LM2902DR2G holds active product status with RoHS3 compliance and unlimited moisture sensitivity level. The device is available in Cut Tape & Digi-Reel packaging with 205,100 pieces in stock inventory.
LM2902VDR2G provides an alternative with extended operating temperature range (-40°C to 125°C versus -40°C to 105°C for LM2902M). This device is suitable for applications requiring enhanced high-temperature performance. LM2902VDR2G is supplied in Tape & Reel packaging with 45,400 pieces in stock.
NCV2902DR2G offers identical electrical specifications to LM2902M with extended temperature range (-40°C to 125°C). This device is available in Cut Tape & Digi-Reel packaging with 77,700 pieces in stock inventory.
Secondary Substitutes for Temperature-Constrained Applications:
LM324DR2G is suitable for applications where the operating temperature range can be limited to 0°C to 70°C. This device maintains the same electrical specifications as LM2902M and is available in high inventory (105,300 pieces) with active product status and RoHS3 compliance.
LM224DR2G operates within -25°C to 85°C temperature range. This device is appropriate for applications not requiring the full -40°C lower temperature limit of LM2902M. Inventory availability is 105,200 pieces.
Alternative Technology Substitutes:
ADTL084ARZ (Analog Devices) is suitable only for applications requiring J-FET input characteristics with extremely low input bias current (2 pA). This device requires minimum 8V supply voltage and is not recommended for 3V to 5V single-supply applications. Operating temperature range extends to -40°C to 125°C.
LF347M/NOPB (Texas Instruments) is a J-FET amplifier requiring minimum 10V supply voltage. This device is not suitable for low-voltage applications and is recommended only when superior input impedance is a critical design requirement.
Cross-Manufacturer Alternatives:
AS324MTR-G1 (Diodes Incorporated) provides general-purpose amplifier functionality with 20 nA input bias current and extended supply voltage range to 36V. Operating temperature range is -40°C to 85°C. This device is suitable for applications where lower input bias current is beneficial.
LM224D (STMicroelectronics) operates across -40°C to 105°C temperature range matching LM2902M. This device features 20 nA input bias current and is available in tube packaging with 4,495 pieces in stock.
Compliance and Certification:
All recommended substitute parts maintain RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity level (MSL 1). All devices are classified under ECCN EAR99 and HTSUS 8542.33.0001.
Frequently Asked Questions (FAQ)
Q: Can LM2902DR2G be used as a direct replacement for LM2902M in all applications?
A: LM2902DR2G maintains identical electrical specifications and supply voltage range as LM2902M. The primary difference is product status (active versus obsolete) and packaging format. LM2902DR2G is suitable for direct replacement in all applications where the original LM2902M was specified, provided the application does not require the specific packaging format of the original part.
Q: What is the difference between LM2902VDR2G and LM2902DR2G?
A: Both devices share identical electrical specifications and supply voltage range. LM2902VDR2G extends the operating temperature range to -40°C to 125°C compared to LM2902DR2G's -40°C to 105°C. LM2902VDR2G is supplied in Tape & Reel packaging, while LM2902DR2G uses Cut Tape & Digi-Reel packaging. Selection depends on temperature requirements and packaging format compatibility with assembly equipment.
Q: Why do LM324ADR2G and LM324DR2G have different input bias current specifications?
A: LM324ADR2G specifies 40 nA input bias current while LM324DR2G specifies 90 nA. Both devices are from the LM324 product family with different manufacturing grades. LM324ADR2G is suitable for applications where lower input bias current provides design advantages. However, both devices operate within the narrower 0°C to 70°C temperature range compared to LM2902M's -40°C to 105°C.
Q: Can ADTL084ARZ replace LM2902M in a 3V supply application?
A: No. ADTL084ARZ requires minimum 8V supply voltage and is not suitable for 3V applications. This device is a J-FET amplifier designed for higher supply voltage systems where extremely low input bias current (2 pA) is required. Use of ADTL084ARZ in 3V applications will result in device malfunction.
Q: What is the significance of the 14-SOIC package specification?
A: The 14-SOIC (Small Outline Integrated Circuit) package with 0.154" width and 3.90mm width is a surface mount package standard. All substitute parts listed maintain this identical package specification, ensuring mechanical and electrical compatibility with existing printed circuit board layouts and assembly processes. Package compatibility eliminates the need for PCB redesign.
Q: Are all substitute parts RoHS3 compliant?
A: All recommended substitute parts maintain RoHS3 compliance status. The original LM2902M does not specify RoHS status. All active substitute devices are compliant with RoHS3 regulations, making them suitable for applications requiring RoHS compliance documentation.
Q: What is the difference between Cut Tape & Digi-Reel and Tape & Reel packaging formats?
A: Both formats supply components on carrier tape suitable for automated assembly equipment. Cut Tape & Digi-Reel format provides flexibility for smaller quantity orders and manual handling. Tape & Reel format is optimized for high-volume automated assembly lines. Selection depends on production volume and assembly equipment compatibility.
Q: Can LM224D from STMicroelectronics be used instead of onsemi LM2902M?
A: LM224D maintains the same operating temperature range (-40°C to 105°C) and supply voltage range (3V to 30V) as LM2902M. However, LM224D specifies 20 nA input bias current (lower than LM2902M's 90 nA) and 1.5 mA supply current. LM224D is suitable for applications where lower input bias current is acceptable. The device is supplied in tube packaging by STMicroelectronics.
Q: What inventory considerations should guide substitute part selection?
A: LM2902DR2G offers the highest inventory availability (205,100 pieces) among direct electrical equivalents. LM324DR2G provides 105,300 pieces in stock. NCV2902DR2G supplies 77,700 pieces. For applications with extended lead time requirements or high-volume production, LM2902DR2G is the recommended choice based on inventory availability and active product status.
Q: Are there any electrical parameter differences that would prevent substitution?
A: Substitution compatibility depends on application-specific requirements. For general-purpose amplifier applications requiring identical electrical performance, LM2902DR2G, LM2902VDR2G, and NCV2902DR2G are fully compatible. For applications where operating temperature range is limited to 0°C to 70°C, LM324DR2G and LM324ADR2G are suitable. J-FET alternatives (ADTL084ARZ, LF347M/NOPB) are compatible only for applications requiring extremely low input bias current and higher supply voltages.
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