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LM2902VDR2 Equivalent & Substitute Parts
Part Overview
The LM2902VDR2 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 operates across a supply voltage range of 3V to 32V and maintains performance over the industrial temperature range of -40°C to 125°C.
The LM2902VDR2 is classified as an obsolete product. Obsolescence necessitates identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production, repair, and long-term system support.
Substiute Parts
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 ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution of the LM2902VDR2 is determined by the following critical parameters:
Functional Equivalence Criteria:
- Amplifier Type: General Purpose
- Number of Circuits: 4
- Gain Bandwidth Product: 1 MHz (or higher)
- Voltage - Supply Span: Minimum 3V, Maximum ≥32V
- Operating Temperature Range: Must encompass -40°C to 125°C or be compatible with application requirements
- Package / Case: 14-SOIC form factor with 0.154" (3.90mm) width for direct PCB compatibility
Electrical Performance Criteria:
- Current - Input Bias: ≤90 nA (lower values acceptable)
- Voltage - Input Offset: ≤2 mV (lower values acceptable)
- Current - Output / Channel: ≥40 mA (higher values acceptable)
Compliance Criteria:
- RoHS Status: ROHS3 Compliant preferred for new designs
- Moisture Sensitivity Level: 1 (Unlimited)
- REACH Status: REACH Unaffected
Substitute parts are grouped into two categories: Direct Manufacturer Equivalents (same base product number, different packaging or grade) and Cross-Manufacturer Alternatives (functionally equivalent devices from different manufacturers with comparable electrical specifications).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Number of Circuits | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Product Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LM2902VDR2 | onsemi | General Purpose | 4 | 1 | 90 | 2 | 40 | 3 | 32 | -40 ~ 125 | 14-SOIC (3.90mm) | Obsolete | Non-compliant |
| LM2902VDR2G | onsemi | General Purpose | 4 | 1 | 90 | 2 | 40 | 3 | 32 | -40 ~ 125 | 14-SOIC (3.90mm) | Active | ROHS3 |
| AS324MTR-G1 | Diodes Incorporated | General Purpose | 4 | 1 | 20 | 2 | 40 | 3 | 36 | -40 ~ 85 | 14-SOIC (3.90mm) | Active | ROHS3 |
| BA10324AF-E2 | Rohm Semiconductor | General Purpose | 4 | 0.5 | 20 | 2 | 35 | 3 | 32 | -40 ~ 85 | 14-SOP (4.40mm) | Active | ROHS3 |
| BA2902F-E2 | Rohm Semiconductor | General Purpose | 4 | 0.5 | 20 | 2 | 30 | 3 | 32 | -40 ~ 125 | 14-SOP (4.40mm) | Active | ROHS3 |
| BA2902YF-MGE2 | Rohm Semiconductor | General Purpose | 4 | 0.5 | 20 | 2 | 30 | 3 | 36 | -40 ~ 125 | 14-SOP (4.40mm) | Active | ROHS3 |
| LF444CM/NOPB | Texas Instruments | J-FET | 4 | 1 | 0.01 | 3 | 14 | 36 | 36 | 0 ~ 70 | 14-SOIC (3.90mm) | Active | ROHS3 |
| LM124D | STMicroelectronics | General Purpose | 4 | 1.2 | 20 | 2 | 30 | 3 | 30 | -55 ~ 125 | 14-SOIC (3.90mm) | Obsolete | ROHS3 |
| LM124DG4 | Texas Instruments | General Purpose | 4 | 1.2 | 20 | 3 | 30 | 3 | 30 | -55 ~ 125 | 14-SOIC (3.90mm) | Last Time Buy | ROHS3 |
| LM124DR | Texas Instruments | General Purpose | 4 | 1.2 | 20 | 3 | 30 | 3 | 30 | -55 ~ 125 | 14-SOIC (3.90mm) | Active | ROHS3 |
| LM124DRG4 | Texas Instruments | General Purpose | 4 | 1.2 | 20 | 3 | 30 | 3 | 30 | -55 ~ 125 | 14-SOIC (3.90mm) | Discontinued at DiGi Electronics | ROHS3 |
Engineering Selection Recommendations
Primary Recommendation: LM2902VDR2G
The LM2902VDR2G is the direct successor to the LM2902VDR2. Both devices share identical electrical specifications, including 1 MHz gain bandwidth product, 90 nA input bias current, and 40 mA output current per channel. The LM2902VDR2G maintains the same 14-SOIC (3.90mm) package footprint and supply voltage range (3V to 32V). The critical distinction is product status: LM2902VDR2G is Active with ROHS3 compliance, whereas the original LM2902VDR2 is Obsolete and RoHS non-compliant. For new designs and production continuity, LM2902VDR2G provides direct electrical and mechanical compatibility with superior compliance status.
Secondary Recommendation: LM124DR
The LM124DR from Texas Instruments is an Active product offering general-purpose amplification with four circuits in a 14-SOIC (3.90mm) package. It provides a 1.2 MHz gain bandwidth product, exceeding the 1 MHz specification of the LM2902VDR2. The LM124DR operates across -55°C to 125°C, extending the lower temperature bound. Supply voltage range is 3V to 30V, which covers the LM2902VDR2 operating window. Input bias current is 20 nA (lower than 90 nA), and output current per channel is 30 mA (lower than 40 mA). The LM124DR is ROHS3 compliant and maintains unlimited moisture sensitivity rating. This device is suitable for applications where the extended temperature range and improved input bias characteristics provide design margin.
Tertiary Recommendation: AS324MTR-G1
The AS324MTR-G1 from Diodes Incorporated is an Active general-purpose four-circuit amplifier in 14-SOIC (3.90mm) package with 1 MHz gain bandwidth product matching the original specification. Supply voltage range extends to 36V maximum, providing additional headroom. Input bias current is 20 nA, and output current per channel is 40 mA, matching the LM2902VDR2 output capability. Operating temperature range is -40°C to 85°C, which covers the lower bound but does not extend to 125°C. The AS324MTR-G1 is ROHS3 compliant and suitable for applications within the -40°C to 85°C window.
Alternative for Extended Input Impedance: LF444CM/NOPB
The LF444CM/NOPB from Texas Instruments is a J-FET amplifier offering significantly lower input bias current (10 pA versus 90 nA). This device is appropriate for applications requiring ultra-high input impedance. However, it operates at fixed ±18V supply (36V total span), has reduced output current per channel (14 mA), and operates only from 0°C to 70°C. The LF444CM/NOPB is not a direct substitute but serves specialized applications where input impedance is the limiting design factor.
Not Recommended: BA10324AF-E2 and BA2902F-E2
The Rohm Semiconductor devices BA10324AF-E2 and BA2902F-E2 feature reduced gain bandwidth product (0.5 MHz versus 1 MHz) and lower output current per channel (35 mA and 30 mA respectively, versus 40 mA). Operating temperature range for BA10324AF-E2 is limited to -40°C to 85°C. These devices introduce performance degradation and are not recommended as direct substitutes.
Not Recommended: LM124D and LM124DG4
LM124D is Obsolete, and LM124DG4 is Last Time Buy or Discontinued at DiGi Electronics. These devices do not resolve the obsolescence issue and should not be selected for new designs.
Frequently Asked Questions (FAQ)
Q: Can LM2902VDR2G be used as a direct replacement for LM2902VDR2 without PCB modification?
A: Yes. The LM2902VDR2G is electrically and mechanically identical to the LM2902VDR2. Both devices use the 14-SOIC (0.154", 3.90mm width) package with identical pin configuration. No PCB layout changes are required. The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 versus non-compliant).
Q: What is the impact of using LM124DR instead of LM2902VDR2?
A: The LM124DR provides superior specifications in several areas: gain bandwidth product increases from 1 MHz to 1.2 MHz, input bias current decreases from 90 nA to 20 nA, and operating temperature range extends to -55°C. However, output current per channel decreases from 40 mA to 30 mA, and maximum supply voltage decreases from 32V to 30V. Applications requiring the full 40 mA output current or 32V supply voltage must verify LM124DR compatibility before substitution.
Q: Are the Rohm Semiconductor devices (BA10324AF-E2, BA2902F-E2, BA2902YF-MGE2) suitable substitutes?
A: The Rohm devices are not recommended as direct substitutes. All three feature reduced gain bandwidth product (0.5 MHz versus 1 MHz) and lower output current per channel (30-35 mA versus 40 mA). Additionally, BA10324AF-E2 operates only to 85°C, not 125°C. These performance reductions may impact circuit operation in bandwidth-sensitive or high-current-demand applications.
Q: What is the difference between LM2902VDR2 and LM2902VDR2G packaging?
A: LM2902VDR2 is supplied in standard tube packaging. LM2902VDR2G is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. Both use identical 14-SOIC (3.90mm) component packages. The packaging difference affects handling and assembly methodology but not electrical performance or PCB footprint.
Q: Can AS324MTR-G1 be used in applications requiring operation at 125°C?
A: No. The AS324MTR-G1 operates only to 85°C maximum. Applications requiring 125°C operation must use devices with extended temperature ratings, such as LM2902VDR2G, BA2902F-E2, BA2902YF-MGE2, or LM124DR.
Q: Why does LF444CM/NOPB have such different electrical specifications?
A: The LF444CM/NOPB is a J-FET input amplifier, fundamentally different from the bipolar input design of the LM2902VDR2. J-FET inputs provide extremely low input bias current (10 pA) but require fixed ±18V supply operation and provide lower output current capability. This device is not a general substitute but serves specialized high-impedance applications.
Q: What is the significance of RoHS compliance for the LM2902VDR2?
A: The original LM2902VDR2 is RoHS non-compliant, meaning it may contain lead or other restricted substances. The LM2902VDR2G and all recommended alternatives are ROHS3 compliant, meeting current environmental and regulatory requirements. For new designs and production, ROHS3-compliant devices are mandatory in most jurisdictions.
Q: Is the LM124DR suitable for high-frequency applications?
A: The LM124DR provides 1.2 MHz gain bandwidth product, which is suitable for general-purpose audio and instrumentation applications. For applications requiring bandwidth exceeding 1.2 MHz, alternative devices with higher gain bandwidth products must be evaluated. The LM2902VDR2 and LM2902VDR2G are limited to 1 MHz and are not suitable for higher-frequency requirements.
Q: Can multiple substitute devices be used interchangeably within the same design?
A: No. Each substitute device has distinct electrical characteristics. Mixing different devices in a single design introduces performance variability and potential circuit instability. Select a single substitute device and verify all circuit performance parameters before production implementation.
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