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Texas Instruments LM2904BAQPWRQ1
- Part No.:
- LM2904BAQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904BAQPWRQ1.pdf
- Description:
- AUTOMOTIVE-GRADE, DUAL, 36-V, 1.
- Quantity:
- Payment:
- Shipping:
Inventory:719
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Product details
Overview
LM2904BAQPWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual operational amplifier for automotive systems, featuring 2 mV max input offset voltage at 25°C, 300 µA per-channel quiescent current, 1.2 MHz unity-gain bandwidth, and rail-to-rail output swing near ground - used in battery management, motor control feedback, and eCall signal conditioning.
For engineers reviewing the LM2904BAQPWRQ1 datasheet, LM2904BAQPWRQ1 pinout, LM2904BAQPWRQ1 application, or LM2904BAQPWRQ1 equivalent, this page delivers verified electrical specs, automotive-grade thermal and ESD ratings, package-specific layout guidance, and functional alternatives with documented parameter differences.
Technical Context
The LM2904BAQPWRQ1 integrates two high-voltage (3 V to 36 V) op-amps in a single monolithic IC, each with internal RF/EMI filtering and common-mode input range extending to V–. Its unity-gain stable architecture supports direct sensing in single-supply configurations without level-shifting circuitry.
It operates across –40°C to +125°C ambient, meets AEC-Q100 HBM ±2 kV / CDM ±1.5 kV ESD requirements, and delivers 0.5 V/µs slew rate with 56° phase margin into 20 pF loads - enabling robust performance in noisy automotive power domains.
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 with headroom for transients. |
| Input Offset Voltage (max) | 2 mV at 25°C - enables precise DC-coupled sensor amplification in BMS voltage monitoring. |
| Quiescent Current / Channel | 300 µA typical - allows low-power always-on functions like crash detection pre-amplifiers. |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for motor current loop compensation up to ~10 kHz closed-loop bandwidth. |
| Common-Mode Input Range | Includes V– (ground) - permits direct interface with shunt-based current sensors referenced to system ground. |
| Output Swing (to V–) | 100 mV at 50 µA - ensures reliable logic-level interfacing with microcontroller ADC inputs in single-supply designs. |
| ESD Rating (CDM) | ±1500 V - exceeds AEC-Q100-011 Class C5 requirement for assembly-line robustness. |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), thermally enhanced for automotive under-hood mounting; pin-compatible with SOIC-8 and VSSOP-8 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Drives feedback networks or downstream comparators; capable of sourcing/sinking ±20 mA. |
| 2 (IN1–) | Inverting input | Accepts differential or single-ended signals; high common-mode rejection enables noise immunity. |
| 3 (IN1+) | Non-inverting input | Direct connection to sensor outputs; input bias current ≤35 nA minimizes error in high-Z sources. |
| 4 (V–) | Negative supply / ground | Reference node for single-supply operation; must be low-impedance to avoid PSRR degradation. |
| 5 (IN2+) | Non-inverting input | Independent channel for auxiliary functions (e.g., temperature sensing or reference buffering). |
| 6 (IN2–) | Inverting input | Supports dual-channel instrumentation topologies without external component duplication. |
| 7 (OUT2) | Amplifier 2 output | Provides isolated gain stage for redundant safety paths or multi-sensor fusion algorithms. |
| 8 (V+) | Positive supply | Connects to filtered 5 V or 3.3 V LDO output; internal EMI filter reduces conducted emissions. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with full parametric testing across temperature and life stress. |
| Integrated EMI/RF filter | Reduces susceptibility to AM-band radiated interference (0.5–30 MHz) without external ferrites or RC networks. |
| Functional Safety-Capable | TI provides FIT rate data, failure mode analysis, and diagnostic coverage reports for ISO 26262 ASIL-B integration. |
| Low input offset drift | ±3.5 µV/°C max - maintains accuracy over engine bay thermal cycling without recalibration. |
| Rail-to-rail output near V– | Enables single-supply operation with 0 V–referenced sensors (e.g., Hall-effect current monitors). |
Applications
| Automotive Battery Management System (BMS) | Electric Power Steering (EPS) Motor Control |
|---|---|
Use Scenario: Monitoring cell voltage differentials across 12S Li-ion packs using precision shunt amplifiers. IC Role / Device Role / Timing Role: Dual-channel difference amplifier with matched gain paths for simultaneous voltage acquisition. Use Value: 2 mV max VOS ensures <±5 mV total measurement error across temperature, meeting ASIL-C voltage monitoring requirements. | Use Scenario: Closed-loop torque control via motor phase current feedback in brushless DC motor drivers. IC Role / Device Role / Timing Role: High-speed current sense amplifier feeding MCU ADC with <4 µs settling time. Use Value: 0.5 V/µs slew rate and 1.2 MHz GBW support 10 kHz PWM current loop bandwidth with minimal phase lag. |
| eCall Emergency Telematics Unit | Automotive Lighting Control Module |
Use Scenario: Amplifying microphone signals for voice-triggered emergency call activation in cabin audio systems. IC Role / Device Role / Timing Role: Low-noise preamplifier stage before analog-to-digital conversion and voice processing. Use Value: 40 nV/√Hz input voltage noise density preserves SNR in 3 kHz audio band, enabling reliable speech detection. | Use Scenario: Regulating LED string current in adaptive front lighting systems (AFS) using PWM dimming feedback. IC Role / Device Role / Timing Role: Error amplifier in constant-current control loop comparing sensed LED current to reference. Use Value: Unity-gain stability and 300 µA quiescent current enable fast transient response while minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BQPWRQ1 | 3 mV max VOS vs. 2 mV; otherwise identical specs and pinout. | Suitable where ±3 mV offset is acceptable (e.g., non-critical body electronics). | Select when cost sensitivity outweighs need for tight offset in safety-critical BMS or EPS. |
| TSV912AQDRQ1 | Higher 8 MHz GBW, 15 V/V max supply, but no integrated EMI filter or CDM ±1.5 kV rating. | Better for high-speed signal chains; not qualified for under-hood thermal or ESD stress. | Prefer only in cabin modules with controlled environments and higher bandwidth needs. |
Compared with LM2904BQPWRQ1, the LM2904BAQPWRQ1 offers tighter offset for precision sensing, while TSV912AQDRQ1 trades automotive ruggedness for speed - making LM2904BAQPWRQ1 optimal for thermally demanding, safety-relevant analog front ends.
Availability
LM2904BAQPWRQ1 is available at Aetrix Electronics and suitable for automotive lighting, battery management systems, and electric power steering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BAQPWRQ1 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 manufacturing.
The LM2904BA-Q1 product line delivers cost-optimized, AEC-Q100 qualified op-amps targeting signal conditioning in safety-critical vehicle subsystems including powertrain, chassis, and electrification systems.
FAQ
What is the maximum operating temperature for the LM2904BAQPWRQ1?
The LM2904BAQPWRQ1 is rated for continuous operation from –40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements for under-hood automotive applications. Thermal derating begins above 125°C, and junction temperature must remain below 150°C per absolute maximum ratings. The TSSOP-8 package has RθJA = 171.7°C/W, so PCB copper area and airflow must be designed accordingly for sustained high-temperature use.
Does the LM2904BAQPWRQ1 support single-supply operation?
Yes, the LM2904BAQPWRQ1 supports true single-supply operation with its common-mode input voltage range extending to V– (ground) and output swing within 100 mV of V– at light loads. This enables direct interfacing with ground-referenced sensors like shunt resistors or thermistors without level-shifting circuitry - critical for low-voltage automotive subsystems powered from 3.3 V or 5 V rails.
Is the LM2904BAQPWRQ1 pin-compatible with the standard LM2904QPWRQ1?
No - the LM2904BAQPWRQ1 shares the same TSSOP-8 pinout as LM2904QPWRQ1 and LM2904BQPWRQ1, but it is not functionally interchangeable with legacy LM2904-Q1 due to differences in offset voltage (2 mV vs. 7 mV), supply range (3–36 V vs. 3–26 V), and integrated EMI filtering. Always verify schematic compatibility and revalidate timing/performance when substituting.
What packaging options are available for the LM2904BAQPWRQ1?
The LM2904BAQPWRQ1 is offered in three automotive-qualified packages: SOIC-8 (4.90 mm × 3.90 mm), TSSOP-8 (3.00 mm × 4.40 mm), and VSSOP-8 (3.00 mm × 3.00 mm). The LM2904BAQPWRQ1 specifically uses the TSSOP-8 (PW) variant, which provides superior thermal performance over SOIC and smaller footprint than VSSOP - ideal for space-constrained telematics and ADAS modules.
How does the integrated EMI filter in the LM2904BAQPWRQ1 improve system robustness?
The LM2904BAQPWRQ1 incorporates on-die RF and EMI filtering that attenuates high-frequency noise (0.5–30 MHz) coupled onto supply or input lines - reducing susceptibility to AM radio band interference without external components. This eliminates the need for discrete RC filters or ferrite beads in sensitive analog paths, lowering BOM count and improving reliability in electric vehicle power electronics where switching noise is prevalent.
LM2904BAQPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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-TSSOP
LM2904BAQPWRQ1 FAQ
1.How can I place an order for LM2904BAQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BAQPWRQ1 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 LM2904BAQPWRQ1 reliable?
The price and inventory of LM2904BAQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BAQPWRQ1 is usually 5 days.
3.What payment methods are accepted for LM2904BAQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BAQPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BAQPWRQ1?
LM2904BAQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BAQPWRQ1 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 LM2904BAQPWRQ1?
For technical support, including LM2904BAQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BAQPWRQ1 requirements.
6.How does Aetrix verify that LM2904BAQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904BAQPWRQ1 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 LM2904BAQPWRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904BAQPWRQ1?
All LM2904BAQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BAQPWRQ1, 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 LM2904BAQPWRQ1 part is unused and in its original packaging.
Return procedure for LM2904BAQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BAQPWRQ1 Tags
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