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LM2902YDT Equivalent & Substitute Parts
Part Overview
The LM2902YDT is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring four independent circuits in a 14-SOIC surface-mount package. This device is classified as Active product status and carries AEC-Q100 automotive qualification, making it suitable for automotive and industrial applications requiring reliable amplification across extended temperature ranges. The LM2902YDT operates across a wide supply voltage span of 3V to 30V with a slew rate of 0.4V/µs and gain bandwidth product of 1.3 MHz. Substitute parts are necessary when addressing supply chain constraints, specific performance requirements, or when alternative packaging formats are required for manufacturing processes.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Push-Pull | — |
| Slew Rate | 0.4 | V/µs |
| Gain Bandwidth Product | 1.3 | MHz |
| Current - Input Bias | 20 | nA |
| Voltage - Input Offset | 2 | mV |
| Current - Supply (x4 Channels) | 1.5 | mA |
| Current - Output / Channel | 60 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 30 | V |
| Operating Temperature | -40 to 125 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Grade | Automotive | — |
| Qualification | AEC-Q100 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the LM2902YDT is determined by the following critical parameters: four-circuit configuration, general-purpose amplifier topology, 14-SOIC package footprint compatibility, supply voltage range (3V to 30V minimum), operating temperature range, and surface-mount capability. Substitute parts must maintain electrical compatibility within the specified voltage and temperature operating windows while preserving the four-circuit architecture.
The substitute parts are grouped into two categories:
Category 1: General-Purpose Amplifiers (Direct Functional Equivalents) These parts maintain the general-purpose amplifier classification, four-circuit configuration, and compatible supply voltage ranges. They are suitable for direct replacement in applications where the specific performance characteristics of the LM2902YDT are required.
Category 2: Alternative Amplifier Topologies (J-FET Input) The ADTL084ARZ variants employ J-FET input architecture, offering superior input bias current performance (2 pA versus 20 nA) and higher slew rate (20V/µs versus 0.4V/µs). These parts are functionally equivalent but operate with different electrical characteristics and require evaluation for specific application requirements.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Output Current (mA) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LM2902YDT | STMicroelectronics | General Purpose | 4 | 0.4 | 1.3 | 20 | 2 | 3 | 30 | -40 to 125 | 60 | 14-SOIC | Active |
| ADTL084ARZ-REEL | Analog Devices Inc. | J-FET | 4 | 20 | 5 | 0.002 | 1.5 | 8 | 36 | -40 to 125 | 27 | 14-SOIC | Active |
| ADTL084ARZ-REEL7 | Analog Devices Inc. | J-FET | 4 | 20 | 5 | 0.002 | 1.5 | 8 | 36 | -40 to 125 | 27 | 14-SOIC | Active |
| BA2902SF-E2 | Rohm Semiconductor | General Purpose | 4 | 0.2 | 0.5 | 20 | 2 | 3 | 32 | -40 to 105 | 30 | 14-SOIC | Active |
| LM124DG4 | Texas Instruments | General Purpose | 4 | 0.5 | 1.2 | 20 | 3 | 3 | 30 | -55 to 125 | 30 | 14-SOIC | Last Time Buy |
| LM224AD | STMicroelectronics | General Purpose | 4 | 0.4 | 1.2 | 20 | 2 | 3 | 30 | -40 to 105 | 30 | 14-SOIC | Obsolete |
| LM224D | STMicroelectronics | General Purpose | 4 | 0.4 | 1.2 | 20 | 2 | 3 | 30 | -40 to 105 | 40 | 14-SOIC | Active |
| LM224KAD | Texas Instruments | General Purpose | 4 | 0.5 | 1.2 | 15 | 2 | 3 | 30 | -25 to 85 | 30 | 14-SOIC | Last Time Buy |
| LM224KADR | Texas Instruments | General Purpose | 4 | 0.5 | 1.2 | 15 | 2 | 3 | 30 | -25 to 85 | 30 | 14-SOIC | Active |
| LM224KDR | Texas Instruments | General Purpose | 4 | 0.5 | 1.2 | 20 | 3 | 3 | 30 | -25 to 85 | 30 | 14-SOIC | Active |
| LM248D | STMicroelectronics | General Purpose | 4 | 0.5 | 1 | 30 | 1 | 44 | 44 | -40 to 105 | 25 | 14-SOIC | Obsolete |
Engineering Selection Recommendations
For Active Product Status Applications: LM224D (STMicroelectronics) and LM224KADR (Texas Instruments) are recommended as primary substitutes. Both maintain Active product status, ensuring long-term availability and manufacturing support. LM224D provides identical electrical characteristics to the LM2902YDT with enhanced output current capability (40 mA versus 60 mA per channel). LM224KADR operates within a narrower temperature range (-25°C to 85°C) but maintains compatibility across the standard industrial operating window.
For Extended Temperature Range Requirements: LM124DG4 (Texas Instruments) supports the full automotive temperature range (-55°C to 125°C), matching the LM2902YDT's upper temperature limit and extending lower temperature operation. This part carries Last Time Buy status, indicating limited future availability.
For High-Performance Input Characteristics: ADTL084ARZ-REEL7 (Analog Devices Inc.) offers superior input bias current (2 pA) and slew rate (20V/µs) performance. This J-FET input topology is suitable for applications requiring minimal input current and faster transient response. The part maintains Active status with high inventory availability (44,200 units).
For Compliance and Qualification: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the LM2902YDT's environmental certifications. The LM2902YDT retains AEC-Q100 automotive qualification; substitute parts should be evaluated for specific automotive application requirements.
Parts to Avoid: LM224AD and LM248D carry Obsolete product status and should not be selected for new designs or long-term production commitments.
Frequently Asked Questions (FAQ)
Q: Can the ADTL084ARZ-REEL7 directly replace the LM2902YDT in all applications?
A: The ADTL084ARZ-REEL7 is functionally compatible in terms of package footprint (14-SOIC) and four-circuit configuration. However, the J-FET input topology introduces different electrical characteristics: input bias current of 2 pA (versus 20 nA), slew rate of 20V/µs (versus 0.4V/µs), and gain bandwidth product of 5 MHz (versus 1.3 MHz). Applications sensitive to input bias current or requiring specific frequency response characteristics must evaluate compatibility before substitution.
Q: What is the difference between LM224D and LM224KADR?
A: Both parts are general-purpose four-circuit amplifiers in 14-SOIC packages. LM224D operates across -40°C to 105°C, while LM224KADR operates across -25°C to 85°C. LM224D is packaged in Tube format; LM224KADR is packaged in Tape & Reel format. LM224D provides 40 mA output current per channel; LM224KADR provides 30 mA. Both maintain Active product status.
Q: Is the BA2902SF-E2 suitable for automotive applications?
A: The BA2902SF-E2 is a general-purpose amplifier manufactured by Rohm Semiconductor with compatible supply voltage range (3V to 32V) and operating temperature range (-40°C to 105°C). However, this part does not carry AEC-Q100 automotive qualification. Applications requiring automotive-grade components should select parts with explicit automotive certification.
Q: Why does the LM248D have a fixed supply voltage of 44V?
A: The LM248D specification indicates a supply voltage span minimum and maximum both set to 44V, indicating this part operates at a fixed supply voltage rather than across a range. This characteristic makes it unsuitable as a general substitute for the LM2902YDT, which operates across 3V to 30V. The LM248D also carries Obsolete status.
Q: What packaging formats are available for LM2902 equivalent parts?
A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel® (LM2902YDT, ADTL084ARZ-REEL7, BA2902SF-E2), Tape & Reel (TR) (ADTL084ARZ-REEL, LM224KADR, LM224KDR), and Tube (LM124DG4, LM224D, LM224KAD). All parts maintain the 14-SOIC surface-mount package footprint (0.154" width, 3.90mm).
Q: Can I use LM224KAD or LM224KDR in applications requiring -40°C operation?
A: No. LM224KAD and LM224KDR operate across -25°C to 85°C, which does not include the -40°C lower temperature limit of the LM2902YDT. Applications requiring full -40°C to 125°C operation must select LM124DG4 or maintain the LM2902YDT.
Q: What is the inventory status for substitute parts?
A: ADTL084ARZ-REEL7 maintains the highest inventory availability (44,200 units). LM224D provides 4,495 units. LM224KADR and LM224KDR each provide approximately 2,980 units. BA2902SF-E2 provides 3,105 units. Obsolete parts (LM224AD, LM248D) should not be selected based on inventory considerations.
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