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LM2904PWR Equivalent & Substitute Parts
Part Overview
The LM2904PWR is a general purpose operational amplifier manufactured by Texas Instruments, configured as a dual-channel integrated circuit in 8-TSSOP surface mount packaging. This device is classified as Active product status and is widely used in analog signal conditioning, filtering, and amplification applications requiring low-cost, general-purpose amplification across industrial and consumer electronics.
Substitute parts are identified when design requirements necessitate alternative packaging formats, different amplifier topologies, or enhanced performance characteristics while maintaining functional compatibility within the specified electrical and mechanical constraints.
Substiute Parts
Key Parameters
| Parameter | LM2904PWR | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | Channels |
| Slew Rate | 0.3 | V/µs |
| Gain Bandwidth Product | 700 | kHz |
| Current - Input Bias | 20 | nA |
| Voltage - Input Offset | 3 | mV |
| Current - Supply (x2 Channels) | 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 |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LM2904PWR are identified based on the following criteria:
Primary Substitution Parameters:
- Number of circuits: 2 channels (mandatory)
- Mounting type: Surface mount or through-hole compatibility
- Supply voltage range: Minimum 3V to maximum 26V or greater
- Operating temperature range: -40°C to 125°C or compatible subset
- Package compatibility: 8-pin configurations (TSSOP, SOIC, MSOP, SSOP, DIP)
- RoHS3 compliance and MSL Level 1 rating
Substitution Categories:
Category 1: Voltage Feedback Amplifiers (AD826 Series) The AD826 family provides higher performance voltage feedback topology with significantly improved slew rate (350V/µs vs. 0.3V/µs) and gain bandwidth product (50 MHz vs. 700 kHz). These devices maintain dual-channel configuration and 8-pin packaging in multiple formats (DIP, SOIC). Supply voltage range extends to 36V maximum. Suitable for applications requiring faster signal processing and wider bandwidth.
Category 2: J-FET Input Amplifiers (ADTL082 Series) The ADTL082 family features J-FET input stage with extremely low input bias current (2 pA vs. 20 nA) and improved input offset voltage (1.5 mV vs. 3 mV). Dual-channel configuration maintained in 8-MSOP and 8-SOIC packages. Operating temperature range extends to -40°C to 125°C. Suitable for high-impedance signal sources and precision measurement applications.
Category 3: General Purpose Equivalent (BA2904 Series) The BA2904SFV-E2 from Rohm Semiconductor provides direct functional equivalence as a general purpose dual-channel amplifier in 8-LSSOP packaging. Performance characteristics closely match LM2904PWR with comparable slew rate (0.2V/µs), gain bandwidth product (500 kHz), and supply voltage range (3V to 32V). Operating temperature range -40°C to 105°C. Suitable for direct replacement in general purpose applications.
Parameter Comparison
| Parameter | LM2904PWR | AD826ANZ | AD826ARZ | AD826ARZ-REEL | AD826ARZ-REEL7 | ADTL082ARMZ | ADTL082ARMZ-REEL | ADTL082ARZ | ADTL082ARZ-REEL | ADTL082ARZ-REEL7 | BA2904SFV-E2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Rohm Semiconductor |
| Amplifier Type | General Purpose | Voltage Feedback | Voltage Feedback | Voltage Feedback | Voltage Feedback | J-FET | J-FET | J-FET | J-FET | J-FET | General Purpose |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Slew Rate (V/µs) | 0.3 | 350 | 350 | 350 | 350 | 20 | 20 | 20 | 20 | 20 | 0.2 |
| Gain Bandwidth Product (kHz/MHz) | 700 kHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 5 MHz | 5 MHz | 5 MHz | 5 MHz | 5 MHz | 500 kHz |
| Current - Input Bias (nA/pA) | 20 nA | 3.3 µA | 3.3 µA | 3.3 µA | 3.3 µA | 2 pA | 2 pA | 2 pA | 2 pA | 2 pA | 20 nA |
| Voltage - Input Offset (mV) | 3 | 0.5 | 0.5 | 0.5 | 0.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2 |
| Current - Supply (µA) | 500 | 6600 | 6600 | 6600 | 6600 | 1200 | 1200 | 1200 | 1200 | 1200 | 500 |
| Current - Output / Channel (mA) | 40 | 50 | 50 | 50 | 50 | 27 | 27 | 27 | 27 | 27 | 30 |
| Voltage - Supply Span Min (V) | 3 | 5 | 5 | 5 | 5 | 8 | 8 | 8 | 8 | 8 | 3 |
| Voltage - Supply Span Max (V) | 26 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 32 |
| Operating Temperature (°C) | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 105 |
| Mounting Type | Surface Mount | Through Hole | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP | 8-DIP | 8-SOIC | 8-SOIC | 8-SOIC | 8-MSOP | 8-MSOP | 8-SOIC | 8-SOIC | 8-SOIC | 8-LSSOP |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
For Direct General Purpose Replacement: BA2904SFV-E2 from Rohm Semiconductor provides the closest functional equivalence to LM2904PWR. Both devices maintain general purpose amplifier topology with comparable performance metrics. The BA2904SFV-E2 operates across the full temperature range (-40°C to 105°C), covers the required supply voltage range (3V to 32V), and maintains dual-channel configuration in surface mount 8-LSSOP packaging. RoHS3 compliance and MSL Level 1 rating are identical. This substitute is suitable for applications where general purpose amplification characteristics are specified without performance enhancement requirements.
For High-Speed Applications: AD826 series (AD826ANZ, AD826ARZ, AD826ARZ-REEL, AD826ARZ-REEL7) from Analog Devices provides voltage feedback topology with significantly enhanced slew rate (350V/µs) and gain bandwidth product (50 MHz). These devices are suitable for applications requiring faster transient response and wider signal bandwidth. Available in both through-hole (8-DIP) and surface mount (8-SOIC) configurations. Operating temperature range is -40°C to 85°C, which covers standard industrial applications. Supply voltage range extends to 36V maximum. Note: Minimum supply voltage is 5V, which may require circuit redesign for applications operating below 5V.
For High-Impedance Signal Sources: ADTL082 series (ADTL082ARMZ, ADTL082ARMZ-REEL, ADTL082ARZ, ADTL082ARZ-REEL, ADTL082ARZ-REEL7) from Analog Devices features J-FET input stage with extremely low input bias current (2 pA). This topology is suitable for precision measurement applications and high-impedance signal conditioning where input bias current must be minimized. Full operating temperature range (-40°C to 125°C) matches LM2904PWR. Available in 8-MSOP and 8-SOIC surface mount packages. Supply voltage range 8V to 36V. Note: Minimum supply voltage is 8V, requiring circuit redesign for lower voltage applications.
Packaging Considerations:
- LM2904PWR uses 8-TSSOP (0.173", 4.40mm width) surface mount package
- BA2904SFV-E2 uses 8-LSSOP (0.173", 4.40mm width) surface mount package—pin-compatible footprint
- AD826 series available in 8-DIP (through-hole) and 8-SOIC (surface mount) formats
- ADTL082 series available in 8-MSOP and 8-SOIC surface mount formats
Compliance and Certification: All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage requirements.
Frequently Asked Questions (FAQ)
Q1: Can AD826 series directly replace LM2904PWR in existing PCB layouts?
A: AD826ANZ uses 8-DIP through-hole packaging and cannot be directly mounted on PCBs designed for LM2904PWR surface mount 8-TSSOP. AD826ARZ, AD826ARZ-REEL, and AD826ARZ-REEL7 use 8-SOIC surface mount packaging, which has different pin spacing (0.154", 3.90mm width) compared to 8-TSSOP (0.173", 4.40mm width). PCB layout modification is required. Electrical functionality is compatible when supply voltage is 5V or greater.
Q2: What is the key difference between BA2904SFV-E2 and LM2904PWR?
A: Both devices are general purpose dual-channel operational amplifiers with comparable performance. BA2904SFV-E2 has slightly lower slew rate (0.2V/µs vs. 0.3V/µs) and gain bandwidth product (500 kHz vs. 700 kHz). Operating temperature range for BA2904SFV-E2 is -40°C to 105°C, which is 20°C lower than LM2904PWR at the upper limit. Both use similar 8-pin surface mount packaging with compatible footprints. Supply voltage ranges are comparable (3V to 32V for BA2904SFV-E2 vs. 3V to 26V for LM2904PWR).
Q3: Why does ADTL082 series have higher minimum supply voltage (8V) compared to LM2904PWR (3V)?
A: ADTL082 uses J-FET input stage technology, which requires higher bias voltage for proper operation compared to the bipolar input stage in LM2904PWR. The 8V minimum supply voltage is a characteristic of J-FET input amplifier design. Applications operating below 8V cannot use ADTL082 series without circuit redesign to provide dual supply rails or alternative biasing.
Q4: Is AD826 suitable for low-power applications?
A: No. AD826 series has significantly higher supply current (6.6 mA per dual-channel device) compared to LM2904PWR (500 µA per dual-channel device). AD826 is approximately 13 times higher in power consumption. For battery-powered or low-power applications, LM2904PWR or BA2904SFV-E2 are more appropriate selections.
Q5: Can ADTL082 be used in applications requiring supply voltages below 8V?
A: No. ADTL082 series specifies minimum supply voltage of 8V. Applications requiring operation at 3V to 7V supply voltage must use LM2904PWR or BA2904SFV-E2. Attempting to operate ADTL082 below 8V will result in improper amplifier biasing and non-functional output.
Q6: What packaging options are available for each substitute family?
A: BA2904SFV-E2 is available only in 8-LSSOP surface mount. AD826 series is available in 8-DIP (through-hole) and 8-SOIC (surface mount). ADTL082 series is available in 8-MSOP and 8-SOIC (both surface mount). For PCB designs using surface mount technology, AD826ARZ variants and ADTL082 variants in SOIC or MSOP packages are appropriate. For through-hole designs, only AD826ANZ in 8-DIP is available.
Q7: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed (BA2904SFV-E2, AD826 series, ADTL082 series) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of LM2904PWR.
Q8: Which substitute provides the best input offset voltage performance?
A: AD826 series provides the lowest input offset voltage at 0.5 mV, compared to LM2904PWR at 3 mV and ADTL082 at 1.5 mV. For precision applications requiring minimal input offset, AD826 is the optimal choice. However, AD826 requires minimum 5V supply voltage and has higher power consumption.
Q9: What is the temperature range limitation for AD826 series?
A: AD826 series operates from -40°C to 85°C, which is 40°C lower than LM2904PWR at the upper temperature limit (-40°C to 125°C). Applications requiring operation above 85°C cannot use AD826 series. ADTL082 series and LM2904PWR both support the full -40°C to 125°C range.
Q10: Can multiple substitute families be mixed in the same design?
A: Yes, provided each amplifier stage is designed for the specific electrical characteristics of the selected device. However, mixing different amplifier topologies (general purpose, voltage feedback, J-FET) in the same circuit may introduce inconsistent performance characteristics. Design verification is required to ensure overall system performance meets specifications.
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