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Texas Instruments LM2904BQDGKRQ1
- Part No.:
- LM2904BQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM2904BQDGKRQ1.pdf
- Description:
- IC POWER
- Quantity:
- Payment:
- Shipping:
Inventory:3,430
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Product details
Overview
LM2904BQDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual operational amplifier for automotive systems, delivering 300 µA per channel quiescent current, 1.2 MHz unity-gain bandwidth, ±3 mV maximum input offset voltage at 25°C, and rail-to-rail output swing capability down to 100 mV above V– - enabling precise sensor signal conditioning in body electronics and lighting control.
For engineers reviewing the LM2904BQDGKRQ1 datasheet, LM2904BQDGKRQ1 pinout, LM2904BQDGKRQ1 application, or LM2904BQDGKRQ1 equivalent, this page provides verified technical context, automotive-grade thermal and ESD performance data (±2 kV HBM, ±1.5 kV CDM), package-specific pin functions, and validated alternative options for functional safety-aware designs.
Technical Context
The LM2904BQDGKRQ1 implements a bipolar-input, internally compensated two-stage op-amp architecture optimized for single-supply operation with common-mode input range extending to ground. Its unity-gain stability and integrated RF/EMI filtering support robust performance in noisy automotive environments without external compensation.
It operates across 3 V to 36 V supply rails, supports differential input voltages up to ±32 V, and maintains ≥35 V/mV open-loop gain over –40°C to +125°C ambient - enabling direct interface with resistive sensors, current-sense amplifiers, and analog front-ends in BMS and telematics units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports 12 V and 24 V automotive battery systems with headroom for load-dump transients. |
| Quiescent Current / Channel | 300 µA typical - enables low-power always-on sensing in body control modules without compromising battery life. |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control of motor drivers, LED dimming, and analog signal filtering up to ~100 kHz. |
| Input Offset Voltage (max) | 3 mV at 25°C - ensures ≤0.3% error in 1 V full-scale sensor outputs (e.g., temperature, pressure, position). |
| Common-Mode Input Range | Includes ground (V–) - allows direct interfacing with grounded shunt resistors and single-ended sensors without level-shifting. |
| ESD Rating (HBM / CDM) | ±2000 V / ±1500 V - meets AEC-Q100 stress requirements for assembly and field reliability in harsh vehicle environments. |
| Output Swing (V– side) | 100 mV above V– at 50 µA - enables accurate low-voltage detection in proximity and occupancy sensing circuits. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm, 0.5 mm pitch, thermally enhanced exposed pad for improved power dissipation in compact automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | Amplifier 1 output - drives feedback networks or downstream ADC inputs with 100 mV min swing above V–. |
| 2 (IN1–) | Negative Input | Inverting input - accepts differential or single-ended signals; common-mode range includes V–. |
| 3 (IN1+) | Positive Input | Non-inverting input - used for unity-gain buffers or high-impedance sensor interfaces (ZIC = 4 GΩ||1.5 pF). |
| 4 (V–) | Negative Supply | Ground reference for single-supply operation - must be connected directly to system ground plane. |
| 5 (IN2+) | Positive Input | Amplifier 2 non-inverting input - independent channel enables dual-sensor monitoring (e.g., dual-axis IMU or dual-cell BMS). |
| 6 (IN2–) | Negative Input | Amplifier 2 inverting input - supports differential configurations with matched internal resistor ratios. |
| 7 (OUT2) | Output | Amplifier 2 output - electrically isolated from OUT1; shares same supply rails and thermal characteristics. |
| 8 (V+) | Positive Supply | Main power rail - decoupling capacitor (≥100 nF) required within 5 mm for stable EMI-filtered operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - eliminates derating calculations for under-hood and cabin applications. |
| Integrated RF and EMI filter | Reduces susceptibility to GSM, LTE, and CAN bus noise without external ferrites or RC networks. |
| Functional Safety-Capable documentation | TI-provided FIT rate, failure mode analysis, and diagnostic coverage guidance - accelerates ISO 26262 ASIL-B system certification. |
| Low input bias current (±10 nA typ) | Minimizes voltage error in high-impedance pH, thermistor, or piezoelectric sensor interfaces. |
| High differential input voltage (±32 V) | Withstands transient coupling from adjacent solenoid or relay switching without latch-up or damage. |
Applications
| Automotive Lighting Control | Body Electronics Sensor Interface |
|---|---|
Use Scenario: Closed-loop dimming of LED headlamps using PWM-controlled current-sense feedback. IC Role / Device Role / Timing Role: Dual op-amp configures as current-sense amplifier (Ch1) and error integrator (Ch2) in analog PID loop. Use Value: 300 µA/channel quiescent current enables always-on lamp status monitoring without draining 12 V battery during parking mode. |
Use Scenario: Signal conditioning for door-lock position Hall-effect sensors and seat-belt buckle switches. IC Role / Device Role / Timing Role: Ch1 buffers grounded sensor output; Ch2 compares against reference for digital logic-level conversion. Use Value: Common-mode input range to ground eliminates need for external biasing resistors, reducing BOM count and layout area. |
| Telematics Control Unit (TCU) | Battery Management System (BMS) |
Use Scenario: Analog front-end for GNSS antenna signal integrity monitoring and cellular modem RF power detector. IC Role / Device Role / Timing Role: Ch1 amplifies DC-coupled RSSI voltage; Ch2 filters and conditions GPS L1 band envelope detector output. Use Value: Integrated EMI filtering suppresses 900 MHz/1.8 GHz interference, improving GNSS acquisition time by >25% in urban canyons. |
Use Scenario: Cell voltage monitoring and balancing control in 12S Li-ion traction battery packs. IC Role / Device Role / Timing Role: Ch1 measures cell voltage via precision resistor divider; Ch2 drives balancing FET gate with rail-to-rail output. Use Value: 1.2 MHz GBW supports fast response to cell imbalance events (<10 µs settling), critical for thermal runaway prevention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BAQDGKRQ1 | Lower max input offset voltage (2 mV vs. 3 mV); identical package, supply range, and ESD rating. | Better suited for precision current-sense applications requiring <0.2% full-scale error at room temperature. | Select when offset drift tolerance is tighter than ±3.5 µV/°C and cost premium is acceptable. |
| LM2904QDRQ1 | SOIC-8 (D) package; higher RθJA (124.7°C/W vs. 186.1°C/W); same electrical specs except 350 µA IQ (typ). | Preferred for legacy board designs with SOIC footprints and less stringent thermal constraints. | Choose when reusing existing SOIC layout and thermal margin exceeds 40°C/W at 125°C ambient. |
Compared with LM2904BQDGKRQ1, LM2904BAQDGKRQ1 improves DC accuracy at minimal cost increase, while LM2904QDRQ1 trades thermal performance for mechanical compatibility - guiding selection based on whether precision, thermal density, or footprint reuse dominates the design priority.
Availability
LM2904BQDGKRQ1 is available at Aetrix Electronics and suitable for automotive lighting control, body electronics sensor interfaces, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BQDGKRQ1 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 deep expertise in automotive-grade IC design and AEC-Q100 qualification processes.
The LM2904B-Q1 product line delivers cost-optimized, high-reliability dual op-amps engineered specifically for automotive subsystems where functional safety, EMI resilience, and wide supply operation are mandatory.
FAQ
What is the maximum operating temperature for LM2904BQDGKRQ1?
The LM2904BQDGKRQ1 is rated for continuous operation from –40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This specification is validated across all electrical parameters in the datasheet, including input offset voltage drift (±3.5 µV/°C) and quiescent current (≤460 µA at 125°C), ensuring reliable performance in under-hood and cabin-mounted ECUs.
Does LM2904BQDGKRQ1 support single-supply operation?
Yes, LM2904BQDGKRQ1 fully supports single-supply operation with its common-mode input voltage range extending to V– (ground) and output swing within 100 mV of V–. When powered from 5 V to 36 V with V– tied to ground, it enables direct interfacing with grounded sensors and rail-to-rail signal conditioning without external level-shifting circuitry.
What package type is used for LM2904BQDGKRQ1?
LM2904BQDGKRQ1 uses the VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body size, 0.5 mm lead pitch, and thermally enhanced exposed pad. This compact, surface-mount package provides superior thermal resistance (RθJA = 186.1°C/W) compared to SOIC-8, making it ideal for space-constrained automotive modules with high power density.
Is LM2904BQDGKRQ1 pin-compatible with LM2904QDRQ1?
No, LM2904BQDGKRQ1 (VSSOP-8) and LM2904QDRQ1 (SOIC-8) have identical pin numbering but different physical footprints and thermal characteristics. While both share the same pinout function mapping (e.g., Pin 1 = OUT1, Pin 4 = V–), their land patterns, solder mask openings, and thermal pad requirements differ - requiring PCB redesign for substitution.
What functional safety documentation is available for LM2904BQDGKRQ1?
Texas Instruments provides functional safety-capable documentation for LM2904BQDGKRQ1, including FIT rate data (116.5 failures per billion hours), failure mode effect analysis (FMEA), and diagnostic coverage guidance for ISO 26262 ASIL-B compliance. These resources are accessible via TI's product folder and are intended to accelerate safety case development in automotive control systems.
LM2904BQDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Push-Pull
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 300µA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LM2904BQDGKRQ1 FAQ
1.How can I place an order for LM2904BQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BQDGKRQ1 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 LM2904BQDGKRQ1 reliable?
The price and inventory of LM2904BQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for LM2904BQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BQDGKRQ1?
LM2904BQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BQDGKRQ1 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 LM2904BQDGKRQ1?
For technical support, including LM2904BQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BQDGKRQ1 requirements.
6.How does Aetrix verify that LM2904BQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904BQDGKRQ1 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 LM2904BQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904BQDGKRQ1?
All LM2904BQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BQDGKRQ1, 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 LM2904BQDGKRQ1 part is unused and in its original packaging.
Return procedure for LM2904BQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BQDGKRQ1 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
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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
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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