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Texas Instruments LM2904DRG3
- Part No.:
- LM2904DRG3
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904DRG3.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,563
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Product details
Overview
LM2904DRG3 from Texas Instruments is a dual general-purpose operational amplifier optimized for industrial and automotive applications, featuring rail-to-rail input (including ground), 3V–30V supply range, 300µA/ch quiescent current, 1.2MHz unity-gain bandwidth, and ±3mV max input offset voltage at 25°C. It serves as a precision signal conditioning and feedback amplification stage in motor control, power supply monitoring, and sensor interface circuits.
For engineers reviewing the LM2904DRG3 datasheet, LM2904DRG3 pinout, LM2904DRG3 application, or LM2904DRG3 equivalent, this page delivers verified electrical specifications, SOIC-8 package mapping, thermal performance data, real-world use cases in HVAC and UPS systems, and two validated alternative parts with documented functional trade-offs.
Technical Context
The LM2904DRG3 implements a bipolar-input, internally compensated two-stage op-amp architecture with common-mode input voltage range extending to V– (ground in single-supply operation) and output swing within 1.5V of V+ and 20mV of V– under 1mA load. Its 1.2MHz gain-bandwidth product supports stable unity-gain configurations without external compensation.
Designed for extended temperature operation (–40°C to +125°C), it integrates EMI/RF filtering and achieves 2kV HBM ESD robustness. The device uses standard current-mirror biasing and Class AB output stage, enabling reliable performance across wide supply and load variations in cost-sensitive embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 30V - supports direct integration into 5V, 12V, and 24V industrial rails without regulation. |
| Input Offset Voltage (max) | ±3mV at 25°C - enables accurate DC-coupled sensing in current shunt amplifiers and battery voltage monitors. |
| Quiescent Current per Channel | 300µA typical - allows dual-amplifier operation in always-on subsystems with sub-1mA total supply draw. |
| Unity-Gain Bandwidth | 1.2MHz - sufficient for closed-loop response up to ~100kHz in active filters and PID controller feedback paths. |
| Common-Mode Input Range | Includes V– (ground) - permits direct low-side current sensing and single-supply transducer interfacing. |
| Output Voltage Swing | Within 20mV of V– and 1.5V of V+ at 1mA - ensures usable dynamic range in 3.3V–24V systems with minimal headroom loss. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor HVAC control units. |
Pinout & Package
LM2904DRG3 is housed in an 8-pin SOIC (D) package measuring 4.9mm × 6mm, with standard JEDEC MS-012AC footprint and gull-wing leads compatible with automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Delivers buffered, low-impedance output signal; capable of sourcing/sinking ±20mA. |
| 2 (IN1–) | Amplifier 1 inverting input | Differential node for feedback networks; accepts signals down to V– (ground). |
| 3 (IN1+) | Amplifier 1 non-inverting input | High-impedance input for reference or sensor signals; CMVR includes V–. |
| 4 (V–) | Negative supply / ground | Reference for both amplifiers; supports true single-supply operation with V– = 0V. |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent high-Z input; electrically isolated from Amp1 except via shared supply rails. |
| 6 (IN2–) | Amplifier 2 inverting input | Feedback node for second channel; identical electrical behavior to Pin 2. |
| 7 (OUT2) | Amplifier 2 output | Second independent output; shares same drive capability and thermal limits as OUT1. |
| 8 (V+) | Positive supply | Single positive rail for dual amplifiers; no separate V– connection required in single-supply mode. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– inclusive) | Enables direct measurement of signals referenced to ground-critical for low-side current sensing and thermistor interfaces. |
| Integrated RF/EMI filter | Reduces susceptibility to conducted noise in motor-drive and switching-power environments without external ferrites. |
| 2kV HBM ESD rating | Eliminates need for external protection diodes in board-level ESD zones, simplifying layout and reducing BOM count. |
| Unity-gain stable | Permits use in voltage followers, active filters, and transimpedance amplifiers without stability-compensation components. |
| Wide temperature range (–40°C to +125°C) | Validated performance across automotive under-hood and industrial control cabinet operating conditions. |
Applications
| Motor Control Feedback | Power Supply Monitoring |
|---|---|
|
Use Scenario: Closed-loop speed regulation of brushed DC motors using back-EMF or hall-sensor feedback. IC Role / Device Role / Timing Role: Amplifies low-level sensor signals and drives comparator inputs for PWM duty-cycle adjustment. Use Value: Input offset ≤±3mV ensures <0.5% error in 500mV feedback references; rail-to-rail input captures full back-EMF waveform near ground. |
Use Scenario: Real-time overvoltage and undervoltage detection in 24V industrial SMPS outputs. IC Role / Device Role / Timing Role: Configured as window comparator with precision reference to trigger shutdown logic. Use Value: 1.2MHz GBW supports fast transient response (<10µs overload recovery); 300µA IQ minimizes standby power in always-on supervisors. |
| HVAC Sensor Interface | Uninterruptible Power Supply (UPS) |
|
Use Scenario: Conditioning analog outputs from NTC thermistors and humidity sensors in indoor air handlers. IC Role / Device Role / Timing Role: Acts as differential amplifier and linearization stage before ADC sampling. Use Value: Common-mode range to V– allows direct connection to grounded sensor bridges; –40°C to +125°C rating matches HVAC ambient extremes. |
Use Scenario: Battery voltage scaling and charge-state monitoring in 12V/24V lead-acid backup systems. IC Role / Device Role / Timing Role: Provides isolated, low-drift attenuation network feeding microcontroller ADC inputs. Use Value: ±3mV offset ensures <0.125% full-scale error on 2.4V scaled battery sense; SOIC-8 package supports conformal coating for humid environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904DT | Same SOIC-8 package, identical electrical specs, but rated only to +105°C ambient (vs. +125°C for LM2904DRG3). | Suitable for commercial-grade power supplies and office equipment where extended temperature is not required. | Select when cost sensitivity outweighs automotive/industrial temperature needs; verify thermal derating in enclosed enclosures. |
| LM358DR | Lower max operating temperature (0°C to +70°C), higher input offset (±7mV), and reduced ESD rating (500V HBM vs. 2kV). | Appropriate for consumer electronics and non-critical instrumentation where environmental stress is minimal. | Choose only for cost-driven, non-automotive designs with controlled lab or indoor environments; avoid in motor control or field-deployed systems. |
Compared with LM2904DT and LM358DR, LM2904DRG3 provides guaranteed operation at +125°C, tighter offset voltage, and superior ESD immunity-making it the preferred choice for automotive body control modules, industrial PLC I/O stages, and outdoor-rated power conversion systems where reliability under thermal and electrical stress is mandatory.
Availability
LM2904DRG3 is available at Aetrix Electronics and suitable for motor control feedback, power supply monitoring, HVAC sensor interface, and uninterruptible power supply (UPS) applications requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.
Supply support for LM2904DRG3 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 specializing in analog and embedded processing technologies, with decades of heritage in precision op-amps and industrial-grade signal chain solutions.
The LM2904DRG3 belongs to TI's industry-standard dual op-amp family designed specifically for cost-sensitive, high-reliability applications in automotive, industrial automation, and power management systems where extended temperature operation and robust ESD performance are essential.
FAQ
What is the maximum supply voltage for LM2904DRG3?
The LM2904DRG3 supports a maximum supply voltage of 30V (V+ to V–), as specified in its absolute maximum ratings. This allows direct operation from unregulated 24V industrial rails or automotive batteries with transient spikes up to 30V, eliminating the need for pre-regulation in many applications. Exceeding 30V risks permanent damage.
Does LM2904DRG3 support single-supply operation?
Yes, LM2904DRG3 fully supports single-supply operation with V– connected to ground. Its common-mode input voltage range includes V–, enabling accurate amplification of signals referenced to ground-such as current-sense shunt voltages or thermistor outputs-without level-shifting circuitry.
What is the input offset voltage specification for LM2904DRG3?
The LM2904DRG3 has a maximum input offset voltage of ±3mV at 25°C and ±4mV over its full operating temperature range (–40°C to +125°C). This value is confirmed in Section 5.6 of the official TI datasheet and applies specifically to the LM2904B variant, which LM2904DRG3 implements.
Is LM2904DRG3 pin-compatible with LM358DR?
No, LM2904DRG3 is not pin-compatible with LM358DR. While both are dual op-amps in SOIC-8 packages, LM358DR uses a different pinout: Pin 1 is OUT1, Pin 2 is IN1–, Pin 3 is IN1+, Pin 4 is V–, Pin 5 is IN2+, Pin 6 is IN2–, Pin 7 is OUT2, and Pin 8 is V+. LM2904DRG3 follows the same pinout-so they are functionally and physically pin-compatible. However, LM358DR is rated only to +70°C and has looser offset and ESD specs.
What thermal metrics apply to LM2904DRG3 in SOIC-8 package?
For the LM2904DRG3 in SOIC-8 (D) package, the junction-to-ambient thermal resistance (RθJA) is 124.7°C/W, junction-to-case (top) is 66.9°C/W, and junction-to-board is 67.9°C/W. These values-listed in Section 5.4 of the TI datasheet-enable accurate PCB thermal design for continuous operation at full load across the –40°C to +125°C range.
LM2904DRG3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
LM2904DRG3 FAQ
1.How can I place an order for LM2904DRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904DRG3 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 LM2904DRG3 reliable?
The price and inventory of LM2904DRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904DRG3 is usually 5 days.
3.What payment methods are accepted for LM2904DRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904DRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904DRG3?
LM2904DRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904DRG3 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 LM2904DRG3?
For technical support, including LM2904DRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904DRG3 requirements.
6.How does Aetrix verify that LM2904DRG3 is sourced from the original manufacturer or authorized distributors?
All LM2904DRG3 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 LM2904DRG3 meets industry standards.
7.What is the process for return or replacement of LM2904DRG3?
All LM2904DRG3 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904DRG3, 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 LM2904DRG3 part is unused and in its original packaging.
Return procedure for LM2904DRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904DRG3 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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