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Texas Instruments LM2904M/NOPB
- Part No.:
- LM2904M/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904M/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,399
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Product details
Overview
LM2904M/NOPB from Texas Instruments is a dual, low-power operational amplifier optimized for single-supply operation from 3 V to 26 V, featuring 1 MHz unity-gain bandwidth, 100 dB open-loop gain, 2 mV input offset voltage, and rail-to-ground output swing. It serves as a general-purpose signal conditioning IC in industrial sensor interfaces and 4–20 mA transmitter front-ends.
For engineers reviewing the LM2904M/NOPB datasheet, LM2904M/NOPB pinout, LM2904M/NOPB application, or LM2904M/NOPB equivalent, this page delivers verified electrical parameters, SOIC-8 package mapping, real-world use cases, and two validated alternative op-amps with documented functional trade-offs.
Technical Context
The LM2904M/NOPB implements a PNP-input stage enabling input common-mode voltage range extending to ground (0 V) and differential input voltage tolerance up to ±26 V. Its internally compensated architecture ensures stable unity-gain operation without external compensation components.
It operates across −40°C to +85°C with supply current of 0.5–1.2 mA per amplifier-essentially independent of supply voltage-and supports both single-supply (3–26 V) and split-supply (±1.5 V to ±13 V) configurations while maintaining rail-to-ground output capability on both channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 26 V single supply; enables direct interface with 3.3-V and 5-V digital systems without level-shifting. |
| Unity-Gain Bandwidth | 1 MHz (temperature-compensated); supports stable amplification of audio-band and low-speed control signals. |
| Input Offset Voltage | 2 mV (typical at 25°C); ensures ≤20 mV error in 10× gain DC amplifiers without trimming. |
| Input Common-Mode Range | 0 V to V+−1.5 V; allows direct sensing of ground-referenced transducer outputs. |
| Output Voltage Swing | Within 20 mV of ground and within 2–3 V of V+ (RL = 10 kΩ); enables true single-supply signal handling down to 0 V. |
| Supply Current per Amplifier | 0.5 mA (typical at 5 V); supports battery-powered instrumentation with multi-year runtime. |
| Large-Signal Voltage Gain | 25 V/mV (min); provides ≥25,000× closed-loop gain stability for precision DC amplification. |
Pinout & Package
LM2904M/NOPB is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) with 4.90 mm × 3.91 mm body size and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Output, Channel A | Amplified output of first op-amp; capable of sourcing/sinking ≥20 mA into 2-kΩ load. |
| 2 (−INA) | Inverting Input, Channel A | Differential input node; accepts signals referenced to ground or mid-rail in single-supply designs. |
| 3 (+INA) | Non-inverting Input, Channel A | High-impedance input (≥200 kΩ) with bias current <250 nA; compatible with high-Z sensors. |
| 4 (GND) | Ground / Negative Supply | Reference node for single-supply operation; also serves as negative rail in dual-supply mode. |
| 5 (+INB) | Non-inverting Input, Channel B | Independent second input channel; identical electrical characteristics to Pin 3. |
| 6 (−INB) | Inverting Input, Channel B | Second differential input pair; supports dual-channel signal conditioning without cross-talk. |
| 7 (OUTB) | Output, Channel B | Second independent output; electrically isolated from OUTA with >120 dB channel-to-channel isolation. |
| 8 (V+) | Positive Supply | Primary power terminal; accepts 3–26 V DC; supplies both amplifiers simultaneously. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with rail-to-ground output | Enables direct interfacing with 0-V referenced sensors (e.g., thermocouples, strain gauges) without level-shifting circuitry. |
| Internally frequency-compensated unity-gain stability | Eliminates need for external compensation capacitors in standard non-inverting/inverting configurations. |
| Input common-mode range includes ground | Permits DC-coupled inputs at 0 V-critical for current-loop transmitters and industrial analog I/O modules. |
| Low quiescent current (0.5 mA typical) | Supports always-on monitoring circuits in energy-constrained applications such as remote sensor nodes. |
| Wide supply range (3–26 V) | Operates across legacy 5-V, modern 3.3-V, and industrial 24-V systems without redesign. |
Applications
| Industrial Sensor Signal Conditioning | 4–20 mA Current Loop Transmitter |
|---|---|
Use Scenario: Amplifying low-level millivolt outputs from RTDs, thermocouples, or pressure bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Dual-channel DC-coupled amplifier providing gain, offset adjustment, and buffer isolation before ADC sampling. Use Value: Rail-to-ground input/output enables full-scale utilization of 0–5 V ADC reference without external biasing networks. | Use Scenario: Converting voltage-controlled setpoints (e.g., 0–5 V) into standardized 4–20 mA loop currents for field devices. IC Role / Device Role / Timing Role: First-stage voltage-to-current converter using one op-amp; second op-amp buffers feedback voltage for precision regulation. Use Value: Input common-mode range including ground allows direct connection to DAC outputs referenced to system ground. |
| Automotive Body Control Module (BCM) Interface | Consumer Appliance Motor Speed Feedback |
Use Scenario: Monitoring resistive cabin temperature sensors and potentiometer-based seat position controls in 12-V automotive systems. IC Role / Device Role / Timing Role: Dual op-amp performing ratiometric scaling and noise filtering prior to microcontroller ADC input. Use Value: 3–26 V supply range accommodates cold-crank (6 V) to load-dump (26 V) transients without external regulators. | Use Scenario: Conditioning tachometer signals from brushed DC motor back-EMF in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: AC-coupled amplifier with high-pass filtering to extract zero-crossing timing from noisy commutation waveforms. Use Value: 1 MHz bandwidth supports accurate speed measurement up to ~10 kHz fundamental frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM358DR | Same architecture but rated for 0°C to 70°C; higher input offset voltage (max 9 mV vs. 7 mV for LM2904). | Limited to commercial-temperature environments; unsuitable for under-hood automotive or industrial enclosures. | Select when cost sensitivity outweighs extended temperature requirement and tighter offset specs. |
| TLV2462IDR | Rail-to-rail input/output; lower supply current (550 µA vs. 500 µA typ); higher bandwidth (6.4 MHz); higher cost. | Enables higher-precision, lower-noise, and faster-response designs where supply headroom is constrained. | Choose when system requires rail-to-rail performance or >1 MHz signal bandwidth beyond LM2904M/NOPB capability. |
Compared with LM358DR, LM2904M/NOPB offers wider operating temperature (−40°C to +85°C) and tighter input offset voltage spec; compared with TLV2462IDR, it trades bandwidth and rail-to-rail capability for lower cost and proven robustness in industrial power rails.
Availability
LM2904M/NOPB is available at Aetrix Electronics and suitable for industrial sensor interfaces, 4–20 mA transmitter designs, and automotive body control modules requiring stable component supply across extended temperature ranges.
Supply support for LM2904M/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog design.
The LM2904M/NOPB belongs to TI's legacy dual-op-amp product line engineered for cost-sensitive, wide-supply industrial and automotive signal conditioning-prioritizing reliability, ease of use, and single-supply compatibility over ultra-low noise or high-speed performance.
FAQ
What is the maximum supply voltage for LM2904M/NOPB?
The absolute maximum supply voltage for LM2904M/NOPB is 32 V, but its recommended operating range is 3 V to 26 V for single-supply operation. Exceeding 26 V may degrade long-term reliability and is not guaranteed by TI's published specifications. Always observe derating curves in the thermal section of the datasheet when operating near limits.
Does LM2904M/NOPB support rail-to-rail output?
LM2904M/NOPB does not provide true rail-to-rail output: its output can swing to within ~20 mV of ground but only to within ~2–3 V of V+ (depending on load). This asymmetry is inherent to its PNP-input, class-AB output stage. For full rail-to-rail swing, consider alternatives like TLV2462IDR-but note that LM2904M/NOPB's ground-swing capability remains sufficient for most single-supply sensor interfaces.
Can LM2904M/NOPB operate from a 3.3-V supply?
Yes, LM2904M/NOPB is fully specified to operate from 3 V to 26 V, including 3.3-V systems. At 3.3 V, it maintains 1 MHz unity-gain bandwidth, 100 dB open-loop gain, and rail-to-ground output swing-making it ideal for interfacing with 3.3-V microcontrollers and ADCs without level shifters or charge pumps.
What is the input bias current of LM2904M/NOPB?
The input bias current of LM2904M/NOPB is 45 nA (typical) and 250 nA (maximum) at 25°C. This value increases with temperature and is highly stable due to TI's PNP-input architecture. It remains well below 500 nA across the full −40°C to +85°C operating range, supporting high-impedance sensor interfaces without significant voltage drop errors.
Is LM2904M/NOPB pin-compatible with LM358?
Yes, LM2904M/NOPB is pin-compatible with LM358 in SOIC-8 packaging, sharing identical pinout (OUTA, −INA, +INA, GND, +INB, −INB, OUTB, V+). However, LM2904M/NOPB extends the operating temperature range to −40°C to +85°C and specifies tighter input offset voltage (2 mV typical vs. 3 mV for LM358), making it preferred for industrial applications.
LM2904M/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 45 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2904M/NOPB FAQ
1.How can I place an order for LM2904M/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904M/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM2904M/NOPB reliable?
The price and inventory of LM2904M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904M/NOPB is usually 5 days.
3.What payment methods are accepted for LM2904M/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904M/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904M/NOPB?
LM2904M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904M/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM2904M/NOPB?
For technical support, including LM2904M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904M/NOPB requirements.
6.How does Aetrix verify that LM2904M/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2904M/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM2904M/NOPB meets industry standards.
7.What is the process for return or replacement of LM2904M/NOPB?
All LM2904M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2904M/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM2904M/NOPB part is unused and in its original packaging.
Return procedure for LM2904M/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904M/NOPB Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
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LM2904DGKR
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LM324DR
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Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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