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LM2902DRG4 Equivalent & Substitute Parts
Part Overview
The LM2902DRG4 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in 14-SOIC surface-mount packaging. This component is classified as obsolete, with 3,200 units currently in stock. The LM2902DRG4 operates across a wide supply voltage range and is suitable for analog signal processing applications requiring low-cost, general-purpose amplification.
Due to its obsolete product status, identifying equivalent and substitute parts is necessary to ensure design continuity, support long-term production requirements, and maintain supply chain reliability. Active alternatives with comparable electrical characteristics and identical packaging are available from multiple manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | LM2902DRG4 | — |
| Manufacturer | Texas Instruments | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 0.5 | V/µs |
| Gain Bandwidth Product | 1.2 | MHz |
| Current - Input Bias | 20 | nA |
| Voltage - Input Offset | 3 | mV |
| Current - Supply (x4 Channels) | 1.4 | mA |
| Current - Output / Channel | 30 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 26 | V |
| Operating Temperature | -40 to 125 | °C |
| Product Status | Obsolete | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LM2902DRG4 is determined by the following critical parameters:
Electrical Compatibility Criteria:
- Number of circuits: 4 (all substitutes maintain this configuration)
- Package type: 14-SOIC surface-mount (physical and electrical compatibility)
- Supply voltage range: Minimum 3 V, maximum 26 V or higher
- Amplifier type: General Purpose
- Gain bandwidth product: 1 MHz or higher
- Output current per channel: 30 mA or higher
- Input bias current: 20 nA or lower
- Input offset voltage: 3 mV or lower
Compliance & Regulatory Criteria:
- RoHS3 compliance (all substitutes meet this requirement)
- MSL rating: 1 (Unlimited)
- REACH unaffected status
Product Status Consideration: Substitutes are grouped into two categories: obsolete parts (LM2902DR) and active parts (LM2902M/NOPB, LM2902MX/NOPB, LM324 series, LP2902 series, BA10324AF-E2). Active parts are preferred for new designs and long-term supply assurance.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LM2902DRG4 | Texas Instruments | Obsolete | 0.5 | 1.2 | 20 | 3 | 1.4 | 30 | 3 | 26 | -40 to 125 | 14-SOIC |
| LM2902DR | Rohm Semiconductor | Obsolete | 0.3 | 1.2 | 20 | 1 | 1 | 30 | 3 | 32 | -40 to 125 | 14-SOPJ |
| LM2902M/NOPB | Texas Instruments | Active | — | 1 | 45 | 2 | 1.5 | 40 | 3 | 32 | -40 to 85 | 14-SOIC |
| LM2902MX/NOPB | Texas Instruments | Active | — | 1 | 45 | 2 | 1.5 | 40 | 3 | 32 | -40 to 85 | 14-SOIC |
| LM324AM/NOPB | Texas Instruments | Active | — | 1 | 45 | 2 | 1.5 | 40 | 3 | 32 | 0 to 70 | 14-SOIC |
| LM324AMX/NOPB | Texas Instruments | Active | — | 1 | 45 | 2 | 1.5 | 40 | 3 | 32 | 0 to 70 | 14-SOIC |
| LM324M/NOPB | Texas Instruments | Active | — | 1 | 45 | 2 | 1.5 | 40 | 3 | 32 | 0 to 70 | 14-SOIC |
| LM324MX/NOPB | Texas Instruments | Active | — | 1 | 45 | 2 | 1.5 | 40 | 3 | 32 | 0 to 70 | 14-SOIC |
| LP2902M/NOPB | Texas Instruments | Active | 0.05 | 0.1 | 2 | 2 | 0.085 | 10 | 3 | 26 | -40 to 85 | 14-SOIC |
| LP2902MX/NOPB | Texas Instruments | Active | 0.05 | 0.1 | 2 | 2 | 0.085 | 10 | 3 | 26 | -40 to 85 | 14-SOIC |
| BA10324AF-E2 | Rohm Semiconductor | Active | 0.2 | 0.5 | 20 | 2 | 0.6 | 35 | 3 | 32 | -40 to 85 | 14-SOP |
Engineering Selection Recommendations
For Direct Replacement (Obsolete to Active Transition):
The LM2902M/NOPB and LM2902MX/NOPB are the primary recommended substitutes. Both are manufactured by Texas Instruments, maintain the LM2902 base product number, and are classified as active products. These parts are available in 14-SOIC packaging identical to the original LM2902DRG4. The LM2902M/NOPB is supplied in tube packaging, while LM2902MX/NOPB is supplied in cut tape and Digi-Reel format. Both support the full supply voltage range of 3 V to 32 V and maintain electrical compatibility across all critical parameters.
For Extended Temperature Range Applications:
The LM2902DRG4 operates to 125°C. The LM2902M/NOPB and LM2902MX/NOPB operate to 85°C. If the application requires operation above 85°C, the LM2902DRG4 remains the only option among active substitutes, though it is classified as obsolete. The LM2902DR (Rohm Semiconductor) is also obsolete but supports -40°C to 125°C operation.
For Low-Power Applications:
The LP2902M/NOPB and LP2902MX/NOPB are active alternatives with significantly reduced supply current (85 µA versus 1.4 mA) and lower output current capability (10 mA versus 30 mA). These parts are suitable only for applications where reduced power consumption is prioritized over output drive capability.
For Industrial Temperature Range (0°C to 70°C):
The LM324AM/NOPB, LM324AMX/NOPB, LM324M/NOPB, and LM324MX/NOPB are active alternatives with industrial temperature specifications. These parts use the LM324 base product number and are functionally equivalent to the LM2902 series within the 0°C to 70°C operating window.
Compliance Status:
All recommended substitutes are ROHS3 compliant, MSL 1 (Unlimited), and REACH unaffected. All are suitable for applications requiring regulatory compliance with current environmental standards.
Frequently Asked Questions (FAQ)
Q1: Can LM2902M/NOPB directly replace LM2902DRG4 in existing designs?
A: Yes. Both parts are 4-circuit general-purpose operational amplifiers in 14-SOIC packaging. The LM2902M/NOPB meets or exceeds all electrical specifications of the LM2902DRG4 within the overlapping operating temperature range (-40°C to 85°C). The primary difference is that LM2902M/NOPB is an active product with extended supply voltage capability (up to 32 V versus 26 V). No circuit modifications are required.
Q2: What is the difference between LM2902M/NOPB and LM2902MX/NOPB?
A: Both parts are electrically identical. The difference is packaging format: LM2902M/NOPB is supplied in tube packaging, while LM2902MX/NOPB is supplied in cut tape and Digi-Reel format. Selection depends on assembly process requirements and volume.
Q3: Why do LP2902M/NOPB and LP2902MX/NOPB have lower output current ratings?
A: The LP2902 series is designed for low-power applications with reduced supply current consumption (85 µA versus 1.4 mA). This design trade-off results in lower output current capability per channel (10 mA versus 30 mA). These parts are suitable only for applications where output current demand does not exceed 10 mA per channel.
Q4: Can LM324 series parts replace LM2902DRG4?
A: LM324 series parts (LM324AM/NOPB, LM324AMX/NOPB, LM324M/NOPB, LM324MX/NOPB) are functionally equivalent 4-circuit general-purpose operational amplifiers in 14-SOIC packaging. However, LM324 parts operate over 0°C to 70°C, which is a narrower temperature range than LM2902DRG4 (-40°C to 125°C). LM324 substitution is appropriate only for applications operating within 0°C to 70°C.
Q5: Is BA10324AF-E2 a suitable substitute?
A: BA10324AF-E2 (Rohm Semiconductor) is a 4-circuit general-purpose operational amplifier with comparable electrical characteristics. However, it is supplied in 14-SOP packaging (4.40mm width) rather than 14-SOIC (3.90mm width). Physical package dimensions differ, requiring PCB layout verification before substitution. Electrical compatibility is confirmed within the -40°C to 85°C operating range.
Q6: What is the significance of the "NOPB" suffix in part numbers?
A: The "NOPB" suffix indicates "No Plumbum" (lead-free) packaging, confirming RoHS3 compliance. All recommended substitutes include this designation.
Q7: Which substitute offers the best long-term supply availability?
A: LM324MX/NOPB has the highest inventory level (50,513 units) among active substitutes, followed by LM324AM/NOPB (36,756 units). Both are suitable for applications operating within 0°C to 70°C. For extended temperature range (-40°C to 85°C), LM2902MX/NOPB (1,499 units) is the recommended active alternative.
Q8: Are all substitutes RoHS3 compliant?
A: Yes. All recommended substitutes are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH unaffected status, confirming suitability for current regulatory requirements.
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