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Texas Instruments LM2904BAQDGKRQ1
- Part No.:
- LM2904BAQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM2904BAQDGKRQ1.pdf
- Description:
- AUTOMOTIVE-GRADE, DUAL, 36-V, 1.
- Quantity:
- Payment:
- Shipping:
Inventory:2,492
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Product details
Overview
LM2904BAQDGKRQ1 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 capability near ground-used in battery management, brake control, and telematics signal conditioning.
For engineers reviewing the LM2904BAQDGKRQ1 datasheet, LM2904BAQDGKRQ1 pinout, LM2904BAQDGKRQ1 application, or LM2904BAQDGKRQ1 equivalent, this page delivers verified electrical specs, package-confirmed pin functions, automotive-grade thermal and ESD performance data, and real-world functional alternatives for safety-critical design validation.
Technical Context
The LM2904BAQDGKRQ1 implements a high-voltage (3 V to 36 V) dual op-amp architecture with common-mode input range extending to ground and differential input voltage tolerance up to ±32 V. Its internal RF/EMI filtering and 2 kV HBM / 1.5 kV CDM ESD rating support robust operation in noisy automotive environments.
It operates across –40°C to +125°C ambient temperature with guaranteed 2 mV max VOS, 300 µA typical IQ/channel, and 1.2 MHz GBW-enabling stable unity-gain configurations in sensor front-ends, current sensing, and voltage monitoring circuits without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports direct connection to 12 V/24 V automotive batteries and wide-input power rails |
| Input Offset Voltage (max) | 2 mV at 25°C - enables accurate low-level signal amplification in BMS cell voltage monitoring |
| Quiescent Current (typ) | 300 µA per channel - allows always-on operation in eCall and passive safety modules with minimal battery drain |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control of motor position feedback and lighting PWM dimming |
| Common-Mode Input Range | Includes ground (V–) - permits single-supply sensing of signals referenced to chassis ground |
| ESD Rating (HBM/CDM) | ±2000 V / ±1500 V - meets AEC-Q100-002/-011 for assembly-line handling and in-vehicle EMI resilience |
| Operating Temperature | –40°C to +125°C (Grade 1) - qualified for under-hood and powertrain applications |
Pinout & Package
LM2904BAQDGKRQ1 is packaged in an 8-pin VSSOP (DGK) with nominal body size 3.00 mm × 3.00 mm, optimized for space-constrained automotive PCBs requiring thermal efficiency and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | Amplifier 1 output - drives feedback networks or downstream ADC inputs in sensor signal chains |
| 2 (IN1–) | Negative Input | Inverting input for Amp 1 - used in transimpedance or difference amplifier configurations |
| 3 (IN1+) | Positive Input | Non-inverting input for Amp 1 - accepts grounded-referenced sensor signals directly |
| 4 (V–) | Negative Supply | Ground or negative rail - enables true single-supply operation down to 0 V common-mode |
| 5 (IN2+) | Positive Input | Non-inverting input for Amp 2 - supports dual-sensor interfaces (e.g., dual thermistor or current sense) |
| 6 (IN2–) | Negative Input | Inverting input for Amp 2 - configurable as reference input in precision comparator or window detector |
| 7 (OUT2) | Output | Amplifier 2 output - independent channel for redundant monitoring or auxiliary signal processing |
| 8 (V+) | Positive Supply | High-side supply rail - connects to regulated 5 V or unregulated 12 V/24 V vehicle bus |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across –40°C to +125°C ambient, eliminating requalification effort for Tier 1 suppliers |
| Integrated RF/EMI filter | Reduces susceptibility to radiated emissions in infotainment and ADAS subsystems without external ferrites |
| Low 2 mV max VOS | Minimizes measurement error in high-accuracy BMS cell balancing and torque sensor signal conditioning |
| Rail-to-rail output swing near ground | Enables full dynamic range utilization with single-supply 3.3 V or 5 V microcontrollers in body control modules |
| Functional Safety-Capable documentation | Provides FIT rate, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B system integration |
Applications
| Automotive Battery Management System (BMS) | Brake System Pressure Monitoring |
|---|---|
Use Scenario: Amplifying millivolt-level voltage drops across shunt resistors in high-voltage traction battery packs. IC Role / Device Role / Timing Role: Precision current-sense amplifier with ground-sensing capability and low drift over temperature. Use Value: 2 mV max VOS ensures ≤0.5% current measurement error at 25°C, critical for state-of-charge accuracy and thermal runaway prevention. | Use Scenario: Conditioning analog pressure sensor outputs in hydraulic brake control units. IC Role / Device Role / Timing Role: Dual-channel signal conditioner providing gain, filtering, and level-shifting before ADC sampling. Use Value: 1.2 MHz GBW supports fast transient response to abrupt pressure changes during ABS activation. |
| Telematics Control Unit (TCU) Sensor Hub | Automotive Head Unit Audio Preamp |
Use Scenario: Aggregating and preprocessing signals from GPS, IMU, and CAN bus diagnostics sensors. IC Role / Device Role / Timing Role: Low-power dual op-amp for anti-aliasing filtering and DC biasing of multi-sensor analog inputs. Use Value: 300 µA/channel quiescent current enables always-on sensor fusion without depleting backup battery during vehicle sleep mode. | Use Scenario: Amplifying line-level audio signals prior to DAC conversion and speaker driver stages. IC Role / Device Role / Timing Role: Dual-channel audio preamplifier with low THD+N (0.001%) and wide supply range. Use Value: Integrated EMI filtering suppresses RF interference from cellular modems, preserving audio fidelity in connected head units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BQDGKRQ1 | 3 mV max VOS (vs. 2 mV), otherwise identical pinout, specs, and packaging | Suitable where tighter offset is not required-e.g., non-critical lighting control or HVAC fan speed feedback | Select when cost sensitivity outweighs need for highest offset accuracy in BMS or brake systems |
| TSV912AQDRQ1 | Higher 8 MHz GBW, 1.1 V/µs slew rate, but only 2.7 V to 5.5 V supply range and no integrated EMI filter | Better for high-speed audio or active filter designs; unsuitable for 12 V/24 V direct battery interfacing | Choose only for low-voltage, high-bandwidth applications where automotive-grade ESD and wide supply are secondary |
Compared with LM2904BQDGKRQ1, LM2904BAQDGKRQ1 delivers 1 mV lower offset for improved precision in safety-critical measurements; compared with TSV912AQDRQ1, it trades bandwidth for wider supply range, integrated EMI protection, and proven AEC-Q100 reliability in harsh automotive environments.
Availability
LM2904BAQDGKRQ1 is available at Aetrix Electronics and suitable for automotive lighting, battery management systems, and brake control applications requiring stable component supply across extended production lifecycles.
Supply support for LM2904BAQDGKRQ1 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, embedded processing, and connectivity solutions for automotive, industrial, and consumer markets.
The LM2904-Q1 family was designed specifically for automotive signal conditioning-prioritizing AEC-Q100 qualification, wide temperature operation, and robustness against EMI, load dump, and supply transients in safety-critical ECUs.
FAQ
What is the maximum input offset voltage specification for LM2904BAQDGKRQ1 at 25°C?
The LM2904BAQDGKRQ1 has a maximum input offset voltage of 2 mV at 25°C, as specified in Section 7.5 of the official TI datasheet (SLOS414K). This value is guaranteed across production lots and forms the basis for precision applications like battery cell voltage monitoring. The LM2904BAQDGKRQ1 achieves tighter offset than the LM2904BQDGKRQ1 (3 mV max), making it preferred for high-accuracy automotive sensing.
Does LM2904BAQDGKRQ1 support single-supply operation with input signals referenced to ground?
Yes, LM2904BAQDGKRQ1 supports true single-supply operation with its common-mode input voltage range extending to V– (ground). This allows direct interface with grounded-referenced sensors such as thermistors, strain gauges, or shunt-based current monitors without level-shifting circuitry-critical for simplifying designs in body control modules and telematics units.
What package type is used by LM2904BAQDGKRQ1, and what are its key mechanical dimensions?
LM2904BAQDGKRQ1 uses the VSSOP-8 (DGK) package with nominal body dimensions of 3.00 mm × 3.00 mm and 0.5 mm lead pitch. This compact, thermally efficient package is optimized for high-density automotive PCB layouts and provides better thermal resistance (RθJA = 186.1°C/W) than SOIC-8 while maintaining compatibility with standard SMT reflow profiles.
Is LM2904BAQDGKRQ1 qualified for functional safety applications per ISO 26262?
LM2904BAQDGKRQ1 is Functional Safety-Capable, with TI providing supporting documentation-including FIT rate data, failure mode analysis, and diagnostic coverage guidance-to aid ISO 26262 ASIL-B system-level development. While the device itself is not ASIL-certified, its documented safety mechanisms and robust AEC-Q100 Grade 1 qualification make it suitable for use in safety-related automotive subsystems when integrated per functional safety requirements.
How does the integrated EMI filter in LM2904BAQDGKRQ1 improve system-level EMC performance?
The integrated RF/EMI filter in LM2904BAQDGKRQ1 attenuates high-frequency noise (typically >30 MHz) coupled onto input traces from sources like switching regulators or cellular transceivers. This reduces the need for external ferrite beads or RC filters in automotive head units and TCUs, lowering BOM count and improving board-level radiated emissions compliance-verified through TI's conducted and radiated immunity testing per ISO 11452-4 and ISO 11452-2.
LM2904BAQDGKRQ1 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:
- 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-VSSOP
LM2904BAQDGKRQ1 FAQ
1.How can I place an order for LM2904BAQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BAQDGKRQ1 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 LM2904BAQDGKRQ1 reliable?
The price and inventory of LM2904BAQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BAQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for LM2904BAQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BAQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BAQDGKRQ1?
LM2904BAQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BAQDGKRQ1 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 LM2904BAQDGKRQ1?
For technical support, including LM2904BAQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BAQDGKRQ1 requirements.
6.How does Aetrix verify that LM2904BAQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904BAQDGKRQ1 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 LM2904BAQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904BAQDGKRQ1?
All LM2904BAQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BAQDGKRQ1, 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 LM2904BAQDGKRQ1 part is unused and in its original packaging.
Return procedure for LM2904BAQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BAQDGKRQ1 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
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
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LM2902DR
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LM358P
Texas Instruments
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