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Texas Instruments LM2904BAQDRQ1
- Part No.:
- LM2904BAQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904BAQDRQ1.pdf
- Description:
- AUTOMOTIVE-GRADE, DUAL, 36-V, 1.
- Quantity:
- Payment:
- Shipping:
Inventory:754
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Product details
Overview
LM2904BAQDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual operational amplifier for automotive systems, featuring 2 mV maximum input offset voltage at 25°C, 300 µA per-channel quiescent current, 1.2 MHz unity-gain bandwidth, and rail-to-rail output swing capability down to 100 mV above V–. It operates across 3 V to 36 V supply range and supports direct ground-sensing in body electronics and BMS signal conditioning.
For engineers reviewing the LM2904BAQDRQ1 datasheet, LM2904BAQDRQ1 pinout, LM2904BAQDRQ1 application, or LM2904BAQDRQ1 equivalent, this page delivers verified electrical specs, automotive-grade thermal and ESD performance (±2 kV HBM, ±1.5 kV CDM), package mapping (SOIC-8), and functional alternatives aligned with AEC-Q100 requirements.
Technical Context
The LM2904BAQDRQ1 implements a bipolar-input op-amp architecture optimized for single-supply operation in harsh automotive environments. Its common-mode input range extends to V–, enabling accurate low-side current sensing without level-shifting circuitry. The device integrates internal RF/EMI filtering and achieves unity-gain stability with capacitive loads up to 100 pF.
It delivers 70 dB minimum open-loop gain (140 V/mV typical), 100 dB CMRR at 25°C, and 0.5 V/µs slew rate - balancing precision, speed, and power efficiency for sensor interface and feedback control loops in telematics and eCall subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports 12 V and 24 V automotive battery rails without external regulation |
| Input Offset Voltage (max) | 2 mV at 25°C - enables high-accuracy DC-coupled signal conditioning in BMS voltage monitoring |
| Quiescent Current / Channel | 300 µA typical - allows always-on functionality in low-power body control modules |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for motor control loop compensation and audio pre-amplification |
| Common-Mode Input Range | Includes V– - permits direct sensing of shunt resistors referenced to ground |
| ESD Rating (HBM / CDM) | ±2000 V / ±1500 V - meets AEC-Q100-002/-011 for robustness in assembly and field operation |
| Operating Temperature | –40°C to +125°C - qualified for under-hood and cabin-mounted automotive ECUs |
Pinout & Package
LM2904BAQDRQ1 is packaged in an 8-pin SOIC (D) with nominal body size 4.90 mm × 3.90 mm, suitable for automated PCB assembly and thermally demanding automotive layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | First amplifier output; drives feedback networks or downstream ADC inputs |
| 2 (IN1–) | Negative Input | Inverting input for first amplifier; used in transimpedance or differential configurations |
| 3 (IN1+) | Positive Input | Non-inverting input for first amplifier; accepts grounded or biased sensor signals |
| 4 (V–) | Negative Supply / Ground | Reference node for single-supply operation; connects directly to system ground plane |
| 5 (IN2+) | Positive Input | Non-inverting input for second amplifier; supports dual-sensor or dual-channel signal paths |
| 6 (IN2–) | Negative Input | Inverting input for second amplifier; enables independent gain-setting resistor networks |
| 7 (OUT2) | Output | Second amplifier output; isolated from OUT1 for parallel processing or redundancy |
| 8 (V+) | Positive Supply | Main power rail connection; decoupling capacitor required near pin for EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in safety-critical automotive modules |
| Integrated RF/EMI filter | Reduces susceptibility to radiated emissions in infotainment and ADAS subsystems |
| Functional Safety-Capable documentation | Supports ISO 26262 ASIL-B system-level analysis with failure mode reports and FIT data |
| Low input bias current (±10 nA typ) | Minimizes error in high-impedance sensor interfaces like thermistor or potentiometer circuits |
| Output short-circuit protection | Enables robust operation in motor driver feedback paths where fault currents may occur |
Applications
| Automotive Lighting Control | Body Electronics Module |
|---|---|
Use Scenario: Regulating LED headlamp brightness via PWM-controlled current sense amplification. IC Role / Device Role / Timing Role: Dual op-amp performs current-to-voltage conversion and error amplification in closed-loop dimming control. Use Value: 2 mV max VOS ensures <0.5% current measurement error across temperature; rail-to-rail output drives MOSFET gate directly. | Use Scenario: Monitoring door lock actuator current to detect jam or obstruction. IC Role / Device Role / Timing Role: First amplifier conditions shunt voltage; second amplifier compares against threshold for fault detection. Use Value: Common-mode input to ground enables direct shunt measurement; 300 µA IQ supports always-on diagnostics. |
| Telematics Control Unit | Battery Management System |
Use Scenario: Amplifying GPS antenna LNA output and conditioning CAN bus termination voltage references. IC Role / Device Role / Timing Role: One amplifier buffers RF front-end signal; the other stabilizes reference voltage for transceiver biasing. Use Value: Integrated EMI filter suppresses cellular band interference; 1.2 MHz GBW supports stable 10 kHz reference buffering. | Use Scenario: Measuring cell voltage across 12S Li-ion packs using precision resistor dividers. IC Role / Device Role / Timing Role: Dual op-amp implements differential input stage and programmable gain for multi-cell monitoring. Use Value: 100 dB CMRR rejects pack-level common-mode noise; 36 V supply rating covers full string voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BQDRQ1 | 3 mV max VOS (vs. 2 mV), otherwise identical specs and pinout | Suitable where ±3 mV offset is acceptable for cost-sensitive lighting or HVAC controls | Select when tighter offset is not required and BOM cost optimization is prioritized |
| TSV912AQDRQ1 | Rail-to-rail input/output, 8 MHz GBW, higher IQ (1.1 mA), smaller VSSOP-8 package | Better for high-speed sensor interfaces but less suited for low-power always-on modules | Choose for faster response in ADAS camera focus control, not for BMS or telematics power budget constraints |
Compared with LM2904BQDRQ1 and TSV912AQDRQ1, the LM2904BAQDRQ1 provides the lowest input offset voltage in the family while maintaining identical quiescent current and supply range - making it optimal for precision analog front-ends where DC accuracy outweighs speed or footprint.
Availability
LM2904BAQDRQ1 is available at Aetrix Electronics and suitable for automotive lighting, body electronics, and battery management system designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BAQDRQ1 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 for automotive, industrial, and personal electronics markets.
The LM2904BA-Q1 product line was engineered specifically for AEC-Q100-compliant automotive signal conditioning - emphasizing precision, ESD resilience, and thermal reliability in engine control, safety, and electrification subsystems.
FAQ
What is the maximum input offset voltage specification for LM2904BAQDRQ1 over temperature?
The LM2904BAQDRQ1 has a maximum input offset voltage of 2 mV at 25°C and ±3.0 mV over the full operating temperature range of –40°C to +125°C. This specification is guaranteed by TI's production testing and applies to all units shipped in the SOIC-8 (D) package configuration, including LM2904BAQDRQ1. The tighter offset enables high-accuracy voltage monitoring in battery management and brake control systems.
Does LM2904BAQDRQ1 support single-supply operation with input signals referenced to ground?
Yes, LM2904BAQDRQ1 supports true single-supply operation with its common-mode input voltage range extending to V– (ground). This allows direct interfacing with grounded sensors such as shunt resistors, thermistors, or potentiometers without level-shifting circuitry. The LM2904BAQDRQ1 maintains specified performance across 3 V to 36 V supply rails, making it ideal for automotive 12 V and 24 V systems.
What package type is used for LM2904BAQDRQ1, and is it RoHS compliant?
LM2904BAQDRQ1 is supplied in an 8-pin SOIC (D) package with 4.90 mm × 3.90 mm body dimensions and standard 1.27 mm lead pitch. It is RoHS compliant and halogen-free per TI's environmental specifications. The package supports automated optical inspection and reflow soldering profiles defined in JEDEC J-STD-020, and thermal resistance (RθJA) is rated at 124.7°C/W for board-level thermal design.
How does the integrated EMI filter in LM2904BAQDRQ1 improve system-level EMC performance?
The integrated RF/EMI filter in LM2904BAQDRQ1 attenuates high-frequency noise coupling into the input stage, reducing susceptibility to radiated emissions in the 30 MHz–1 GHz range. This feature eliminates the need for external RC filters in automotive infotainment and telematics modules, simplifying layout and improving immunity to GSM, LTE, and Bluetooth interference without degrading DC accuracy or bandwidth.
Is LM2904BAQDRQ1 pin-compatible with earlier LM2904-Q1 variants?
Yes, LM2904BAQDRQ1 is pin-compatible with LM2904-Q1, LM2904B-Q1, and LM2904AV-Q1 in SOIC-8 (D), TSSOP-8 (PW), and VSSOP-8 (DGK) packages. All share identical pinout, supply voltage compatibility, and functional block diagram. However, LM2904BAQDRQ1 offers improved offset (2 mV vs. 7 mV) and lower quiescent current (300 µA vs. 350 µA) versus legacy LM2904-Q1, enabling drop-in upgrades in existing automotive designs.
LM2904BAQDRQ1 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:
- Push-Pull
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 2 mV
- 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-SOIC
LM2904BAQDRQ1 FAQ
1.How can I place an order for LM2904BAQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BAQDRQ1 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 LM2904BAQDRQ1 reliable?
The price and inventory of LM2904BAQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BAQDRQ1 is usually 5 days.
3.What payment methods are accepted for LM2904BAQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BAQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BAQDRQ1?
LM2904BAQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BAQDRQ1 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 LM2904BAQDRQ1?
For technical support, including LM2904BAQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BAQDRQ1 requirements.
6.How does Aetrix verify that LM2904BAQDRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904BAQDRQ1 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 LM2904BAQDRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904BAQDRQ1?
All LM2904BAQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BAQDRQ1, 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 LM2904BAQDRQ1 part is unused and in its original packaging.
Return procedure for LM2904BAQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BAQDRQ1 Tags
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LM358DT
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902DR
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LM358P
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