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Texas Instruments LM2904D
- Part No.:
- LM2904D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904D.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,777
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Product details
Overview
LM2904D from Texas Instruments is a dual operational amplifier in SOIC-8 package, designed for cost-sensitive industrial and consumer applications requiring rail-to-rail input (including ground), 3V–30V supply operation, 3mV max input offset voltage at 25°C, 0.7MHz gain-bandwidth product, and −40°C to +125°C operating temperature range - used in motor control feedback loops, power supply error amplifiers, and sensor signal conditioning.
For engineers reviewing the LM2904D datasheet, LM2904D pinout, LM2904D application, or LM2904D equivalent, this page delivers verified electrical specs, package mapping, functional pin definitions, real-world use cases, and validated alternative options - all specific to the LM2904D variant with D (SOIC-8) packaging and −40°C to +125°C rating.
Technical Context
The LM2904D implements two independent high-voltage op amps with common-mode input range extending to V− (ground in single-supply mode), enabling direct sensing of low-side current shunts and battery monitoring. Its internal architecture supports unity-gain stability without external compensation.
It features 300µA per amplifier quiescent current, integrated RF/EMI filtering, and robust 500V HBM ESD protection - optimized for noisy industrial environments where reliability under voltage transients and electromagnetic interference is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 30V - supports wide-input industrial power rails and automotive battery-sensing applications without external regulation. |
| Input Offset Voltage (max, 25°C) | ±3 mV - enables accurate DC-coupled signal amplification in precision sensor interfaces and closed-loop control. |
| Gain-Bandwidth Product | 0.7 MHz - sufficient for low-frequency feedback (e.g., PWM motor control, PSU error amplification) with stable phase margin. |
| Quiescent Current (per channel) | 350 µA typical - allows low-power operation in always-on subsystems like HVAC fan controllers or smart meter analog front-ends. |
| Operating Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor power electronics. |
| Common-Mode Input Range | Includes V− (ground) - permits direct interfacing with low-side current sense resistors and single-supply sensor outputs. |
| Output Swing (from rail) | 1.5V from V+ and 20mV from V− (at 5mA load) - provides usable dynamic range in 5V/12V/24V systems without rail-splitting. |
Pinout & Package
LM2904D is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package measuring 4.9mm × 6mm, with standard JEDEC MS-012AC footprint and gull-wing leads for surface-mount assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives feedback networks, ADC inputs, or low-impedance loads up to ±30mA. |
| 2 | IN1− | Inverting input of Amp1 - accepts differential or single-ended signals; referenced to ground in most configurations. |
| 3 | IN1+ | Non-inverting input of Amp1 - used for reference-based sensing (e.g., thermistor bias, voltage divider monitoring). |
| 4 | V− | Negative supply or ground - establishes the lower rail; common return for both amplifiers and external circuitry. |
| 5 | IN2+ | Non-inverting input of Amp2 - enables dual-channel functions like differential-to-single-ended conversion or dual-sensor buffering. |
| 6 | IN2− | Inverting input of Amp2 - supports independent second-stage gain or comparator hysteresis configuration. |
| 7 | OUT2 | Amplifier 2 output - operates independently of OUT1; shares same supply and thermal environment. |
| 8 | V+ | Positive supply - powers both amplifiers; tolerant of 30V max, supporting unregulated DC bus inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (includes ground) | Enables direct connection to low-side current shunts and single-supply sensors without level-shifting circuitry. |
| Integrated RF/EMI filter | Reduces susceptibility to conducted and radiated noise in motor drive and switching power supply environments. |
| −40°C to +125°C operation | Qualified for under-hood automotive, industrial inverters, and outdoor HVAC control without derating. |
| 500V HBM ESD rating | Ensures robustness during board handling and field deployment in electrostatic-prone manufacturing and service settings. |
| Unity-gain stable | Eliminates need for external compensation capacitors in buffer, follower, or integrator configurations. |
Applications
| Motor Control Feedback | Power Supply Error Amplifier |
|---|---|
|
Use Scenario: Monitoring current through low-side shunt resistor in brushed DC or BLDC motor drivers. IC Role / Device Role / Timing Role: Dual op amp configured as current-sense amplifier (Amp1) and voltage feedback comparator (Amp2). Use Value: Ground-referenced input allows direct shunt measurement; 0.7MHz GBW supports <10kHz loop bandwidths in closed-loop motor control. |
Use Scenario: Regulating output voltage in AC/DC and DC/DC converters via optocoupler feedback path. IC Role / Device Role / Timing Role: Error amplifier comparing sensed output against reference, driving optocoupler LED. Use Value: 3mV offset ensures tight regulation accuracy; 30V supply tolerance accommodates wide-range auxiliary supplies. |
| Sensor Signal Conditioning | Industrial HVAC Control |
|
Use Scenario: Amplifying millivolt-level outputs from RTDs, thermocouples, or pressure transducers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end stage with gain and offset adjustment. Use Value: Rail-to-rail input captures full sensor range; 0.7MHz bandwidth preserves step response for fast thermal events. |
Use Scenario: Fan speed control and temperature compensation in residential/commercial air conditioners. IC Role / Device Role / Timing Role: Dual-channel comparator and integrator for PID loop implementation in microcontroller-less designs. Use Value: −40°C to +125°C rating ensures reliable operation inside condenser units; SOIC-8 simplifies rework on dense PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904DR | Same SOIC-8 package and −40°C to +125°C rating; identical electrical specs; "R" suffix denotes tape-and-reel packaging only. | No functional difference - interchangeable in all designs; differs only in packaging format and reel quantity. | Select LM2904DR for automated SMT production requiring tape-and-reel delivery; LM2904D for tube-based prototyping or low-volume assembly. |
| LM2904BDR | Next-generation revision with 1.2MHz GBW, 2mV offset (BA), 300µA IQ, and 2kV HBM ESD - not pin-compatible due to different internal layout and qualification. | Higher performance in bandwidth and precision, but requires validation for noise immunity and thermal behavior in legacy designs. | Choose LM2904BDR only when upgrading for improved loop response or tighter DC accuracy; not a drop-in replacement for LM2904D. |
Compared with LM2904DR, LM2904D offers identical functionality in tube packaging for flexibility in small-batch builds; compared with LM2904BDR, it trades bandwidth and offset for proven compatibility in long-lifecycle industrial systems where change control is critical.
Availability
LM2904D is available at Aetrix Electronics and suitable for motor control feedback, power supply regulation, and sensor signal conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM2904D 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 50 years of op amp innovation and broad industrial design-in support.
The LM2904 series was developed as a rugged, cost-optimized dual op amp family targeting high-volume industrial, automotive, and consumer power systems - emphasizing reliability, wide supply range, and ground-sensing capability.
FAQ
What is the maximum supply voltage for LM2904D?
The LM2904D supports a maximum supply voltage of 30V (V+ to V−), as specified in its Recommended Operating Conditions table. This rating applies across the full −40°C to +125°C temperature range and enables direct use with 24V industrial buses and unregulated auxiliary supplies without external regulators or clamping circuits.
Does LM2904D support single-supply operation with input down to ground?
Yes, LM2904D supports true single-supply operation with common-mode input voltage range extending to V− (ground). This allows direct interfacing with low-side current shunts, battery terminals, and grounded sensor outputs without level-shifting components - a key feature confirmed in its Electrical Characteristics tables.
What is the input offset voltage specification for LM2904D at room temperature?
The LM2904D has a maximum input offset voltage of ±3 mV at 25°C, as documented in Section 5.8 of the official TI datasheet. This value is guaranteed across the full operating temperature range (−40°C to +125°C) up to ±4 mV, making it suitable for precision DC-coupled applications like sensor amplification and error signal generation.
Is LM2904D pin-compatible with LM358D?
No, LM2904D is not pin-compatible with LM358D. While both are dual op amps in SOIC-8 packages, LM358D is rated for 0°C to +70°C operation and has different input bias current, offset drift, and gain-bandwidth characteristics. Their pinouts match physically, but electrical behavior and qualification differ - substitution requires full system validation.
What package type does LM2904D use, and what are its dimensions?
LM2904D uses the industry-standard 8-pin SOIC (D) package with JEDEC MS-012AC outline, measuring 4.9mm × 6mm (length × width) including leads. It is compatible with standard reflow profiles and automated optical inspection, and is widely supported by PCB design libraries and assembly houses.
LM2904D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 700 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 500µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2904D FAQ
1.How can I place an order for LM2904D through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904D 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 LM2904D reliable?
The price and inventory of LM2904D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904D is usually 5 days.
3.What payment methods are accepted for LM2904D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904D?
LM2904D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904D 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 LM2904D?
For technical support, including LM2904D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904D requirements.
6.How does Aetrix verify that LM2904D is sourced from the original manufacturer or authorized distributors?
All LM2904D 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 LM2904D meets industry standards.
7.What is the process for return or replacement of LM2904D?
All LM2904D units undergo pre-shipment inspection (PSI). If there is an issue with LM2904D, 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 LM2904D part is unused and in its original packaging.
Return procedure for LM2904D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904D Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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