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Texas Instruments LM2904VQDR
- Part No.:
- LM2904VQDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904VQDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,607
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Product details
Overview
LM2904VQDR from Texas Instruments is a dual general-purpose operational amplifier optimized for industrial and automotive applications, featuring rail-to-rail input (including ground), 3 V to 30 V supply range, 300 µA/ch quiescent current, 0.7 MHz gain bandwidth, and −40°C to +125°C operating temperature. It serves as a precision signal conditioning and voltage comparison element in motor control feedback loops, power supply error amplifiers, and sensor interface circuits.
For engineers reviewing the LM2904VQDR datasheet, LM2904VQDR pinout, LM2904VQDR application, or LM2904VQDR equivalent, this page delivers verified electrical specifications, package-validated pin functions, real-world use cases in high-reliability systems, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM2904VQDR implements a bipolar-input, internally compensated two-stage op-amp architecture with common-mode input voltage range extending to the negative rail-enabling direct single-supply sensing of low-side current shunts and ground-referenced sensors. Its unity-gain stable design supports closed-loop configurations without external compensation.
It operates across extended temperature (−40°C to +125°C) and wide supply (3 V to 30 V), with input offset voltage ≤7 mV at 25°C and ≤10 mV over full temperature range-making it suitable for cost-sensitive analog front-ends where moderate precision suffices and ESD robustness (500 V HBM) is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports 5 V, 12 V, and 24 V industrial rails without level-shifting |
| Gain Bandwidth Product | 0.7 MHz - enables stable closed-loop operation up to ~100 kHz with gain ≥7 |
| Input Offset Voltage (max) | 7 mV at 25°C, 10 mV over −40°C to +125°C - sets DC accuracy limit in sensor amplification |
| Quiescent Current / ch | 350 µA typical - allows dual-channel amplification in battery-backed or energy-constrained systems |
| Common-Mode Input Range | Includes V− (ground) - permits direct interfacing with low-side current sense resistors |
| Output Swing (min) | Within 20 mV of V− and 1.5 V of V+ at 5 mA load - supports near-rail output in single-supply comparators |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial motor drive environments |
Pinout & Package
LM2904VQDR is packaged in an 8-pin SOIC (D package), 4.9 mm × 6 mm body size, with standard dual-op-amp pinout and no internal connections on unused pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Delivers buffered, inverted or non-inverted signal based on configuration; drives loads ≤30 mA |
| 2 (IN1−) | Amplifier 1 inverting input | Accepts feedback or reference signal; high-impedance node (≤250 nA bias current) |
| 3 (IN1+) | Amplifier 1 non-inverting input | Accepts sensor or reference input; common-mode range includes ground for single-supply use |
| 4 (V−) | Negative supply / ground | Reference for both amplifiers; must be stable and low-impedance for noise immunity |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent input channel; identical electrical characteristics to Pin 3 |
| 6 (IN2−) | Amplifier 2 inverting input | Supports independent feedback network; shares same bias and offset specs as Pin 2 |
| 7 (OUT2) | Amplifier 2 output | Electrically isolated output channel; can drive separate load or cascade stage |
| 8 (V+) | Positive supply | Accepts 3–30 V DC; decoupling capacitor (0.1 µF) required at pin for stability |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V− inclusive) | Enables direct measurement of signals referenced to system ground-no level-shifter needed for shunt-based current sensing |
| Extended temperature range | −40°C to +125°C operation validated per AEC-Q100 stress testing-suitable for engine control and powertrain modules |
| Low quiescent current | 350 µA per amplifier allows dual-channel signal conditioning in always-on subsystems without excessive standby power draw |
| ESD robustness | 500 V HBM rating ensures reliable handling and board-level assembly in standard manufacturing environments |
| Unity-gain stable | Operates stably with gain = 1 without external compensation-reduces BOM count and layout complexity |
Applications
| Motor Control Feedback | Power Supply Error Amplifier |
|---|---|
Use Scenario: Monitoring phase current in brushed DC or stepper motor drivers using low-side shunt resistors. IC Role / Device Role / Timing Role: Dual op-amp configured as differential amplifier (Ch1) and comparator (Ch2) for overcurrent detection. Use Value: Ground-sensing input eliminates need for isolated amplifiers; 10 mV max offset ensures <±5% current measurement error at 500 mV shunt drop. | Use Scenario: Regulating output voltage in 12 V/24 V DC-DC converters via feedback loop to PWM controller. IC Role / Device Role / Timing Role: Error amplifier comparing sensed output to reference; drives optocoupler input in isolated topologies. Use Value: 0.7 MHz GBW supports loop bandwidths up to 70 kHz; 350 µA/ch current minimizes auxiliary supply loading. |
| Sensor Signal Conditioning | Industrial PLC Analog Input |
Use Scenario: Amplifying millivolt-level outputs from RTDs, thermocouples, or pressure transducers in factory automation. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (dual op-amp in 3-op-amp topology) with gain set by external resistors. Use Value: Input bias current ≤250 nA prevents significant error in high-impedance sensor bridges; −40°C to +125°C rating matches industrial ambient requirements. | Use Scenario: Converting 4–20 mA current loop signals to 0–5 V or 0–10 V for ADC input in programmable logic controllers. IC Role / Device Role / Timing Role: Precision I-to-V converter (Ch1) and buffer/filter stage (Ch2) for anti-aliasing and drive capability. Use Value: 7 mV max input offset contributes <±0.35% full-scale error in 20 mA → 5 V conversion; SOIC package supports automated PCB assembly. |
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; identical electrical specs but rated for −40°C to +125°C with 7 mV max VOS (same as LM2904VQDR) | No V suffix-standard industrial grade; lacks automotive qualification documentation | Select when AEC-Q200 compliance is not required and cost optimization is prioritized |
| LM2904BQDR | Next-generation revision: 3 mV max VOS at 25°C, 300 µA/ch IQ, 1.2 MHz GBW, 2 kV HBM ESD | Higher precision and speed; wider 3–36 V supply; automotive-qualified (AEC-Q100 Grade 1) | Select when improved DC accuracy, faster response, or enhanced reliability in harsh environments is needed |
Compared with LM2904VQDR, LM2904DR offers identical performance at lower qualification cost, while LM2904BQDR delivers measurable gains in offset, bandwidth, and ESD robustness-justifying upgrade in new designs targeting higher accuracy or automotive deployment.
Availability
LM2904VQDR is available at Aetrix Electronics and suitable for motor control feedback, power supply regulation, sensor signal conditioning, and industrial PLC analog input applications requiring stable component supply across automotive and industrial production cycles.
Supply support for LM2904VQDR 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 ICs and broad industrial portfolio coverage.
The LM2904V series belongs to TI's industry-standard dual op-amp product line, designed specifically for cost-sensitive, high-volume applications demanding robust performance across extended temperature ranges and wide supply voltages.
FAQ
What is the maximum supply voltage for LM2904VQDR?
The LM2904VQDR supports a maximum supply voltage of 30 V across its V+ and V− terminals, as specified in the Absolute Maximum Ratings table. This allows direct operation from common industrial rails including 24 V systems. Exceeding 30 V risks permanent damage, and operation above 26 V requires verification of thermal derating per the device's RθJA of 124.7°C/W in SOIC packaging. The LM2904VQDR datasheet confirms this limit applies regardless of ambient temperature or load condition.
Does LM2904VQDR support rail-to-rail output swing?
No, the LM2904VQDR does not provide rail-to-rail output swing. Its output can swing within approximately 20 mV of the negative rail (V−) and within 1.5 V of the positive rail (V+) under 5 mA load conditions. This limitation is inherent to its bipolar output stage. For true rail-to-rail output, designers should consider alternatives like the TLV2462 or LMV358. The LM2904VQDR's output behavior is fully characterized in Section 5.8 of its datasheet, with test data confirming minimum headroom values across temperature and supply conditions.
What is the input offset voltage specification for LM2904VQDR?
The LM2904VQDR has a maximum input offset voltage of 7 mV at 25°C and 10 mV over its full operating temperature range of −40°C to +125°C. This value is explicitly stated in Section 5.8 ("Electrical Characteristics: LM2904, LM2904V") of the official TI datasheet. It reflects worst-case device variation and is critical for DC-coupled applications such as current sensing or precision reference buffering. The LM2904VQDR's offset is higher than the LM2904BA (2 mV max) but matches the standard LM2904 family baseline.
Is LM2904VQDR pin-compatible with LM2904DR?
Yes, the LM2904VQDR is pin-compatible with the LM2904DR: both use the same SOIC-8 (D) package and identical pinout (OUT1, IN1−, IN1+, V−, IN2+, IN2−, OUT2, V+). No PCB layout changes are required for substitution. However, the "V" suffix denotes automotive-grade qualification per AEC-Q100, while the "DR" variant is standard industrial grade. Electrical parameters-including offset voltage, bandwidth, and quiescent current-are functionally identical between the two parts, as confirmed in TI's family comparison tables.
What package type is used for LM2904VQDR?
The LM2904VQDR uses the 8-pin SOIC (Small Outline Integrated Circuit) package, designated as "D" in TI's packaging nomenclature, with nominal dimensions of 4.9 mm × 6 mm. This surface-mount package is RoHS-compliant, lead-free, and qualified for reflow soldering per JEDEC J-STD-020. The "QDR" suffix in the part number explicitly indicates the SOIC-8 automotive-grade variant. Package drawings and thermal data (RθJA = 124.7°C/W) are provided in Section 11 of the LM2904VQDR datasheet.
LM2904VQDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2904VQDR FAQ
1.How can I place an order for LM2904VQDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904VQDR 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 LM2904VQDR reliable?
The price and inventory of LM2904VQDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904VQDR is usually 5 days.
3.What payment methods are accepted for LM2904VQDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904VQDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904VQDR?
LM2904VQDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904VQDR 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 LM2904VQDR?
For technical support, including LM2904VQDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904VQDR requirements.
6.How does Aetrix verify that LM2904VQDR is sourced from the original manufacturer or authorized distributors?
All LM2904VQDR 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 LM2904VQDR meets industry standards.
7.What is the process for return or replacement of LM2904VQDR?
All LM2904VQDR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904VQDR, 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 LM2904VQDR part is unused and in its original packaging.
Return procedure for LM2904VQDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904VQDR Tags
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