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LM2902VD Equivalent & Substitute Parts
Part Overview
The LM2902VD is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface mount package. Manufactured by onsemi, this device operates across a wide supply voltage range of 3V to 32V and maintains performance over the industrial temperature range of -40°C to 125°C. The LM2902VD is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting current RoHS compliance and availability standards.
Substiute Parts
Key Parameters
| Parameter | LM2902VD |
|---|---|
| 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 ~ 125°C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution of the LM2902VD is determined by the following critical parameters:
Functional Requirements:
- Four independent operational amplifier circuits
- General-purpose amplifier topology
- 14-pin SOIC package configuration
- Surface mount technology
Electrical Compatibility:
- Supply voltage range: minimum 3V, maximum 32V (or higher)
- Input bias current: 90 nA or lower
- Input offset voltage: 2 mV or lower
- Output current per channel: 40 mA or higher
- Gain bandwidth product: 1 MHz or higher
Environmental & Compliance:
- Operating temperature range: -40°C to 125°C (or extended range)
- RoHS3 compliance (required for new designs)
- Moisture sensitivity level: 1 (unlimited) preferred
Substitute parts are grouped into two categories: Direct Functional Equivalents (matching all critical parameters) and Enhanced Performance Alternatives (exceeding specifications while maintaining compatibility).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Output/Ch (mA) | Supply Min (V) | Supply Max (V) | Temp Range | Package | Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LM2902VD | onsemi | General Purpose | 4 | 1 | 90 | 2 | 40 | 3 | 32 | -40 to 125 | 14-SOIC | Obsolete | Non-compliant |
| AS324MTR-G1 | Diodes Inc. | General Purpose | 4 | — | 20 | 2 | 40 | 3 | 36 | -40 to 85 | 14-SOIC | Active | ROHS3 |
| BA2902F-E2 | Rohm Semi. | General Purpose | 4 | 0.5 | 20 | 2 | 30 | 3 | 32 | -40 to 125 | 14-SOP | Active | ROHS3 |
| BA2902YF-MGE2 | Rohm Semi. | General Purpose | 4 | 0.5 | 20 | 2 | 30 | 3 | 36 | -40 to 125 | 14-SOP | Active | ROHS3 |
| BA10324AF-E2 | Rohm Semi. | General Purpose | 4 | 0.5 | 20 | 2 | 35 | 3 | 32 | -40 to 85 | 14-SOP | Active | ROHS3 |
| LM124DR | Texas Instr. | General Purpose | 4 | 1.2 | 20 | 3 | 30 | 3 | 30 | -55 to 125 | 14-SOIC | Active | ROHS3 |
| LM124DG4 | Texas Instr. | General Purpose | 4 | 1.2 | 20 | 3 | 30 | 3 | 30 | -55 to 125 | 14-SOIC | Last Time Buy | ROHS3 |
| ADA4004-4ARZ-RL | Analog Devices | General Purpose | 4 | 12 | 40 | 0.04 | 10 | 10 | 30 | -40 to 125 | 14-SOIC | Active | ROHS3 |
| LF444CMX/NOPB | Texas Instr. | J-FET | 4 | 1 | 0.01 | 3 | 14 | 36 | 36 | 0 to 70 | 14-SOIC | Active | ROHS3 |
Engineering Selection Recommendations
Primary Substitute: AS324MTR-G1 (Diodes Incorporated)
The AS324MTR-G1 provides the closest functional match to the LM2902VD. It maintains identical input offset voltage (2 mV), output current per channel (40 mA), and minimum supply voltage (3V). The device features superior input bias current (20 nA versus 90 nA), extended maximum supply voltage (36V versus 32V), and is RoHS3 compliant with active product status. The primary limitation is the reduced upper operating temperature (85°C versus 125°C), which is acceptable for most industrial applications not requiring extended temperature operation.
Secondary Substitute: BA2902F-E2 or BA2902YF-MGE2 (Rohm Semiconductor)
Both Rohm devices maintain the full -40°C to 125°C operating temperature range and RoHS3 compliance. The BA2902F-E2 supports the original 32V maximum supply voltage, while the BA2902YF-MGE2 extends to 36V and includes AEC-Q100 automotive qualification. Trade-offs include reduced output current per channel (30 mA versus 40 mA) and lower gain bandwidth product (0.5 MHz versus 1 MHz). These devices are suitable for applications where lower output current and bandwidth are acceptable.
Alternative for Extended Temperature: LM124DR (Texas Instruments)
The LM124DR maintains the full -40°C to 125°C temperature range with extended lower limit (-55°C) and is RoHS3 compliant with active status. It provides 1.2 MHz gain bandwidth product and 14-SOIC packaging. The device is limited to 30V maximum supply voltage and 30 mA output current per channel. This option is recommended when extended temperature performance is critical.
High-Performance Alternative: ADA4004-4ARZ-RL (Analog Devices)
The ADA4004-4ARZ-RL offers significantly enhanced performance with 12 MHz gain bandwidth product, 40 µV input offset voltage, and 40 nA input bias current. However, it requires minimum 10V supply voltage (incompatible with 3V to 9V applications) and provides only 10 mA output current per channel. This device is suitable for precision applications where supply voltage constraints are not limiting.
Not Recommended: LF444CMX/NOPB (Texas Instruments)
The LF444CMX/NOPB is a J-FET amplifier with fundamentally different characteristics (10 pA input bias current, 14 mA output current) and restricted operating temperature (0°C to 70°C). It is not suitable as a direct substitute for general-purpose applications requiring the full industrial temperature range.
Frequently Asked Questions (FAQ)
Q: Can the AS324MTR-G1 replace the LM2902VD in all applications?
A: The AS324MTR-G1 is compatible with most applications. The primary consideration is the reduced upper operating temperature limit (85°C versus 125°C). Applications operating continuously above 85°C ambient temperature require alternative substitutes such as BA2902F-E2 or LM124DR.
Q: What is the difference between 14-SOIC and 14-SOP packages?
A: Both designations refer to 14-pin surface mount packages with similar pinouts and footprints. The primary difference is package width: 14-SOIC is 3.90mm wide, while 14-SOP variants (such as those from Rohm) are 4.40mm wide. PCB layout verification is required before substitution to confirm footprint compatibility.
Q: Why does the LM2902VD require substitution?
A: The LM2902VD is classified as obsolete by onsemi and is non-compliant with current RoHS3 regulations. New designs and production continuity require active, RoHS3-compliant alternatives. Existing inventory of 2450 pieces supports short-term requirements only.
Q: Is the ADA4004-4ARZ-RL suitable for low-voltage applications?
A: No. The ADA4004-4ARZ-RL requires a minimum supply voltage of 10V, making it incompatible with applications operating at 3V to 9V. The AS324MTR-G1, BA2902F-E2, or BA2902YF-MGE2 are appropriate for low-voltage designs.
Q: What is the significance of RoHS3 compliance?
A: RoHS3 compliance indicates the device meets current European Union Restriction of Hazardous Substances regulations. All active substitute parts listed are RoHS3 compliant, whereas the original LM2902VD is non-compliant. RoHS3 compliance is mandatory for new designs and many procurement specifications.
Q: Can I use the LM124DR as a direct pin-for-pin replacement?
A: Yes. The LM124DR shares identical 14-SOIC pinout and package dimensions with the LM2902VD. However, verify that the reduced maximum supply voltage (30V versus 32V) and output current (30 mA versus 40 mA) are acceptable for your application.
Q: What is the difference between BA2902F-E2 and BA2902YF-MGE2?
A: Both devices are functionally identical with 0.5 MHz gain bandwidth product and 30 mA output current per channel. The BA2902YF-MGE2 includes AEC-Q100 automotive qualification and supports extended maximum supply voltage (36V versus 32V). Select BA2902YF-MGE2 for automotive applications or systems requiring 36V operation.
Q: How do I verify package compatibility before substitution?
A: Confirm that the substitute part's package designation (14-SOIC or 14-SOP) and physical dimensions match your PCB footprint. Rohm 14-SOP packages are 4.40mm wide compared to standard 14-SOIC at 3.90mm. Consult the device datasheet and PCB layout documentation before finalizing substitution.
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