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LM2904DRG3 Equivalent & Substitute Parts
Part Overview
The LM2904DRG3 is a general-purpose operational amplifier featuring two independent circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as Last Time Buy, indicating discontinued production status. The LM2904DRG3 operates across a wide supply voltage range of 3V to 26V and maintains performance across the industrial temperature range of -40°C to 125°C. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Slew Rate | 0.3 | V/µs |
| Gain Bandwidth Product | 700 | kHz |
| Current - Input Bias | 20 | nA |
| Voltage - Input Offset | 3 | mV |
| Current - Supply (per channel) | 500 | µA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 26 | V |
| Operating Temperature | -40 to 125 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LM2904DRG3 are classified into two primary categories based on electrical and mechanical compatibility:
Category 1: Direct LM2904 Base Series Substitutes (Highest Compatibility)
These parts share the identical LM2904 base product number and maintain core electrical specifications including 2-circuit configuration, 8-SOIC package geometry, and general-purpose amplifier classification. Substitution within this category is determined by matching:
- Amplifier Type: General Purpose
- Number of Circuits: 2
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Slew Rate: 0.3V/µs
- Gain Bandwidth Product: 700 kHz
- Current - Input Bias: 20 nA
- Voltage - Input Offset: 3 mV
- Current - Supply: 500µA to 1mA
- Voltage - Supply Span: 3V to 26V minimum
- Operating Temperature: -40°C to 125°C or -40°C to 85°C
Category 2: Enhanced Performance Substitutes (Conditional Compatibility)
These parts maintain the 2-circuit, 8-SOIC configuration and general-purpose classification but feature improved electrical performance characteristics. Substitution requires verification that enhanced specifications do not create design conflicts:
- Amplifier Type: General Purpose
- Number of Circuits: 2
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Gain Bandwidth Product: 1 MHz (higher than LM2904DRG3)
- Current - Input Bias: 45 nA (higher than LM2904DRG3)
- Voltage - Input Offset: 2 mV (lower than LM2904DRG3)
- Voltage - Supply Span: 3V to 32V (extended maximum)
- Operating Temperature: -40°C to 85°C or 0°C to 70°C
Category 3: Alternative Package Geometry Substitutes (Package Verification Required)
These parts maintain general-purpose 2-circuit amplifier functionality but use 8-SOP package (0.173", 4.40mm Width) instead of 8-SOIC. Physical board layout compatibility must be confirmed before selection.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | Slew Rate (V/µs) | GBW (kHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LM2904DRG3 | Texas Instruments | General Purpose | 2 | 0.3 | 700 | 20 | 3 | 0.5 | 40 | 3 | 26 | -40 to 125 | 8-SOIC | Last Time Buy |
| LM2904DR | Rohm Semiconductor | General Purpose | 2 | 0.3 | 700 | 20 | 3 | 1 | 40 | 3 | 26 | -40 to 125 | 8-SOIC | Not For New Designs |
| LM2904M/NOPB | Texas Instruments | General Purpose | 2 | — | 1000 | 45 | 2 | 1 | 40 | 3 | 32 | -40 to 85 | 8-SOIC | Active |
| LM2904MX/NOPB | Texas Instruments | General Purpose | 2 | — | 1000 | 45 | 2 | 1 | 40 | 3 | 32 | -40 to 85 | 8-SOIC | Active |
| LM358AM/NOPB | Texas Instruments | General Purpose | 2 | — | 1000 | 45 | 2 | 1 | 40 | 3 | 32 | 0 to 70 | 8-SOIC | Active |
| LM358AMX/NOPB | Texas Instruments | General Purpose | 2 | — | 1000 | 45 | 2 | 1 | 40 | 3 | 32 | 0 to 70 | 8-SOIC | Active |
| AD8022ARZ | Analog Devices Inc. | Voltage Feedback | 2 | 50 | 100000 | 2500 | 1.5 | 4 | 55 | 4.5 | 26 | -40 to 85 | 8-SOIC | Active |
| BA10358F-E1 | Rohm Semiconductor | General Purpose | 2 | 0.2 | 500 | 45 | 2 | 0.7 | 20 | 3 | 32 | -40 to 85 | 8-SOP | Active |
| BA10358F-E2 | Rohm Semiconductor | General Purpose | 2 | 0.2 | 500 | 45 | 2 | 0.7 | 20 | 3 | 32 | -40 to 85 | 8-SOP | Active |
| BA2904SF-E2 | Rohm Semiconductor | General Purpose | 2 | 0.2 | 500 | 20 | 2 | 0.5 | 30 | 3 | 32 | -40 to 105 | 8-SOP | Active |
Engineering Selection Recommendations
Primary Recommendation: LM2904M/NOPB or LM2904MX/NOPB
Both LM2904M/NOPB and LM2904MX/NOPB are manufactured by Texas Instruments with Active product status, ensuring long-term availability and design support. These parts maintain the identical 8-SOIC package footprint and 2-circuit general-purpose amplifier configuration. Enhanced electrical specifications (1 MHz gain bandwidth product, 45 nA input bias current, 2 mV input offset voltage) represent performance improvements that are backward-compatible with LM2904DRG3 designs. The extended maximum supply voltage (32V versus 26V) provides additional design margin. Operating temperature range of -40°C to 85°C covers the industrial specification, with the exception of the upper temperature limit (125°C on LM2904DRG3 versus 85°C on LM2904M/NOPB). Both parts are ROHS3 compliant with MSL 1 rating.
Secondary Recommendation: LM2904DR (Rohm Semiconductor)
The LM2904DR maintains identical electrical specifications to LM2904DRG3, including 0.3V/µs slew rate, 700 kHz gain bandwidth product, and 20 nA input bias current. Package geometry and 2-circuit configuration are identical. However, product status is listed as Not For New Designs, limiting suitability for long-term production applications.
Alternative for Extended Temperature Range: BA2904SF-E2
The BA2904SF-E2 (Rohm Semiconductor) provides the widest operating temperature range (-40°C to 105°C) among available substitutes, exceeding the LM2904DRG3 specification. This part maintains input bias current of 20 nA and supply current of 500µA, matching the original device. The 8-SOP package (0.173", 4.40mm Width) requires board layout verification due to different pin spacing compared to 8-SOIC.
Not Recommended: AD8022ARZ
The AD8022ARZ is a voltage feedback amplifier with significantly different electrical characteristics (50V/µs slew rate, 100 MHz gain bandwidth product, 2.5µA input bias current). This device is suitable only for high-speed applications requiring performance specifications substantially different from the LM2904DRG3 general-purpose design intent.
Frequently Asked Questions (FAQ)
Q: Can LM2904M/NOPB directly replace LM2904DRG3 in existing designs?
A: LM2904M/NOPB maintains identical package geometry (8-SOIC), circuit count (2), and general-purpose amplifier classification. Enhanced electrical specifications (higher gain bandwidth product, lower input offset voltage) are backward-compatible. The primary design consideration is the reduced maximum operating temperature (85°C versus 125°C). If the application requires operation above 85°C, alternative substitutes must be evaluated.
Q: What is the difference between LM2904M/NOPB and LM2904MX/NOPB?
A: Both parts are manufactured by Texas Instruments with identical electrical specifications and Active product status. The primary difference is packaging: LM2904M/NOPB is supplied in Tube packaging, while LM2904MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on procurement and assembly requirements.
Q: Why is LM2904DR listed as Not For New Designs?
A: LM2904DR (Rohm Semiconductor) maintains identical electrical specifications to LM2904DRG3 but carries a Not For New Designs status, indicating the manufacturer is transitioning away from this product line. While functionally equivalent, this status limits long-term availability and design support. For new designs, LM2904M/NOPB or LM2904MX/NOPB are preferred.
Q: Can BA10358F-E2 or BA2904SF-E2 be used as substitutes?
A: BA10358F-E2 and BA2904SF-E2 are general-purpose 2-circuit amplifiers in 8-SOP package format (0.173", 4.40mm Width), which differs from the LM2904DRG3 8-SOIC package (0.154", 3.90mm Width). Physical board layout compatibility must be verified before selection. BA2904SF-E2 offers the advantage of extended temperature range (-40°C to 105°C) and matching input bias current (20 nA).
Q: What does Last Time Buy status mean for LM2904DRG3?
A: Last Time Buy indicates Texas Instruments has discontinued production of LM2904DRG3. Existing inventory may be available from distributors, but long-term supply cannot be guaranteed. Designs should transition to Active-status alternatives such as LM2904M/NOPB or LM2904MX/NOPB to ensure production continuity.
Q: Are all substitute parts ROHS3 compliant?
A: All substitute parts listed in this reference are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of LM2904DRG3.
Q: What is the significance of the 26V versus 32V maximum supply voltage difference?
A: LM2904DRG3 specifies a maximum supply voltage of 26V, while LM2904M/NOPB and LM2904MX/NOPB extend this to 32V. The higher rating on substitute parts provides additional design margin and is backward-compatible with designs operating at 26V or below.
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