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Texas Instruments LM2904BTQDGKRQ1
- Part No.:
- LM2904BTQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM2904BTQDGKRQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:12,197
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Product details
Overview
LM2904BTQDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual operational amplifier for automotive systems, featuring 3 V to 36 V supply range, 300 µA per-channel quiescent current, 1.2 MHz unity-gain bandwidth, and rail-to-rail input common-mode range including ground - enabling direct low-side current sensing in battery management and brake control circuits.
For engineers reviewing the LM2904BTQDGKRQ1 datasheet, LM2904BTQDGKRQ1 pinout, LM2904BTQDGKRQ1 application, or LM2904BTQDGKRQ1 equivalent, key selection criteria include its automotive-grade ESD robustness (±2 kV HBM, ±1.5 kV CDM), integrated RF/EMI filtering, functional safety documentation support, and guaranteed 2 mV max input offset voltage at 25°C for precision signal conditioning in harsh environments.
Technical Context
The LM2904BTQDGKRQ1 implements a dual high-voltage op-amp architecture with independent input stages referenced to V– (ground in single-supply operation) and V+, supporting true single-supply operation down to 3 V. Its internal compensation ensures unity-gain stability without external components, while the common-mode input range extending to V– enables direct interfacing with shunt resistors and sensors operating near ground potential.
Designed for automotive functional safety compliance, the device includes integrated EMI/RF filters and supports diagnostic monitoring via output saturation behavior under overload conditions. Its 300 µA typical quiescent current per channel and 1.2 MHz GBW balance power efficiency with dynamic response for real-time control loops in telematics and eCall subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports wide automotive battery voltage transients and 12 V/24 V system compatibility |
| Input Offset Voltage (max) | 2 mV at 25°C - enables accurate DC-coupled amplification in BMS voltage monitoring and sensor front-ends |
| Quiescent Current / Channel | 300 µA typical - reduces standby power in always-on automotive modules like body controllers |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control of motor drivers and lighting PWM feedback |
| Common-Mode Input Range | Includes V– (ground) - allows direct connection to low-side current shunts without level-shifting circuitry |
| ESD Rating (HBM/CDM) | ±2000 V / ±1500 V - meets stringent automotive board-level ESD immunity requirements per AEC-Q100 |
| Operating Temperature | –40°C to +125°C - qualified for under-hood and powertrain applications per AEC-Q100 Grade 1 |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body size, 0.65 mm pitch, surface-mount, thermally enhanced for automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | Amplifier 1 output - drives feedback networks or downstream comparators in sensor signal chains |
| 2 (IN1–) | Negative Input | Inverting input of Amp1 - connects to feedback resistor or reference node in transimpedance configurations |
| 3 (IN1+) | Positive Input | Non-inverting input of Amp1 - interfaces directly with grounded shunt resistors or thermistor dividers |
| 4 (V–) | Negative Supply | Lowest supply rail or ground - enables true single-supply operation and simplifies power domain partitioning |
| 5 (IN2+) | Positive Input | Non-inverting input of Amp2 - used for differential sensing or independent signal conditioning paths |
| 6 (IN2–) | Negative Input | Inverting input of Amp2 - accepts feedback from second sensor channel or reference voltage |
| 7 (OUT2) | Output | Amplifier 2 output - provides redundancy or parallel processing in safety-critical functions like brake pressure monitoring |
| 8 (V+) | Positive Supply | Highest supply rail - connects to regulated 5 V, 12 V, or unregulated battery feed with transient protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in engine bay and chassis modules |
| Integrated RF and EMI filter | Reduces susceptibility to radiated emissions in infotainment and ADAS subsystems without external LC networks | Functional Safety-Capable | Documentation available for ISO 26262 ASIL-B system-level integration in braking and steering assist functions |
| Rail-to-rail input common-mode range | Enables direct interface with 0 V-referenced sensors (e.g., current shunts, Hall-effect ICs) without biasing resistors |
| Low input offset voltage (2 mV max) | Minimizes DC error in precision voltage monitoring for 12 V battery state-of-charge estimation |
Applications
| Automotive Battery Management System (BMS) | Brake Pressure Monitoring |
|---|---|
Use Scenario: Monitoring cell voltages and pack current in 12 V lead-acid or LiFePO₄ auxiliary batteries for start-stop and EV range extension. IC Role / Device Role / Timing Role: Dual op-amp performs differential voltage amplification and low-side current sensing with ground-referenced inputs. Use Value: 2 mV max input offset ensures ≤0.5% full-scale error in 12 V measurement; 300 µA quiescent current extends sleep-mode battery life. | Use Scenario: Conditioning analog signals from piezoresistive brake pressure transducers in hydraulic ABS modules. IC Role / Device Role / Timing Role: Amplifies millivolt-level bridge outputs with high CMRR (>100 dB) and EMI filtering for noise immunity on vehicle CAN bus wiring harnesses. Use Value: ±2 kV HBM ESD rating prevents latch-up during service disconnect events; 1.2 MHz bandwidth supports fast pressure transient detection. |
| Telematics Control Unit (TCU) | Automotive Head Unit Audio Preamp |
Use Scenario: Signal conditioning for GNSS antenna LNA bias control and cellular modem RF front-end monitoring in connected car gateways. IC Role / Device Role / Timing Role: Provides stable DC bias and envelope detection for RF power amplifiers using dual-channel configuration. Use Value: Integrated EMI filter suppresses GSM/5G band interference; 36 V supply tolerance accommodates load-dump transients up to 40 V. | Use Scenario: Low-noise preamplification of analog audio inputs (AUX, FM tuner) before ADC conversion in infotainment head units. IC Role / Device Role / Timing Role: Dual op-amp implements non-inverting gain stage and active filter with 40 nV/√Hz input noise density. Use Value: 0.001% THD+N at 1 kHz ensures high-fidelity audio reproduction; rail-to-rail input eliminates coupling capacitors in DC-coupled designs. |
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 | SOIC-8 package (4.90 mm × 3.90 mm); identical electrical specs and AEC-Q100 qualification | Preferred for through-hole prototyping or legacy PCBs with SOIC footprints; lower thermal resistance (124.7°C/W vs 186.1°C/W) | Select when board space allows larger package and higher power dissipation margin is required |
| LM2904BAQDGKRQ1 | Same VSSOP-8 package; 2 mV max VOS (vs 3 mV for LM2904B-Q1 variants), otherwise identical | Used where tighter DC accuracy is mandatory - e.g., high-resolution BMS voltage monitoring or precision temperature sensing | Choose when <2 mV offset is required; note LM2904BTQDGKRQ1 is LM2904BA-Q1 variant per TI orderable addendum |
Compared with LM2904BQDRQ1 and LM2904BAQDGKRQ1, LM2904BTQDGKRQ1 delivers identical performance in the space-constrained VSSOP-8 footprint with optimized thermal performance for dense automotive PCBs, while offering the lowest input offset voltage among Q1-qualified dual op-amps in this package.
Availability
LM2904BTQDGKRQ1 is available at Aetrix Electronics and suitable for automotive lighting, battery management systems, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BTQDGKRQ1 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 LM2904-Q1 family was developed specifically for automotive signal conditioning applications demanding high reliability, ESD robustness, and functional safety support - targeting body electronics, powertrain, and ADAS subsystems.
FAQ
What is the maximum supply voltage rating for LM2904BTQDGKRQ1?
The LM2904BTQDGKRQ1 has an absolute maximum supply voltage of 40 V, with recommended operating range from 3 V to 36 V. This 36 V upper limit supports 24 V commercial vehicle systems and accommodates automotive load-dump transients up to 40 V without damage, as confirmed in Section 7.1 Absolute Maximum Ratings of the TI SLOS414K datasheet.
Does LM2904BTQDGKRQ1 support true single-supply operation?
Yes, LM2904BTQDGKRQ1 supports true single-supply operation because its common-mode input voltage range includes V– (ground), and output can swing within 1.5 V of V– at 1 mA load. This allows direct interfacing with grounded sensors and shunt resistors without level-shifting circuitry, as specified in Section 7.3 Recommended Operating Conditions and Figure 7-12 of the datasheet.
What is the input offset voltage specification for LM2904BTQDGKRQ1 at 125°C?
The LM2904BTQDGKRQ1 - as an LM2904BA-Q1 variant - has a maximum input offset voltage of ±3.0 mV over the full –40°C to +125°C operating range, per Section 7.5 Electrical Characteristics. This is tighter than the ±4.0 mV limit for LM2904B-Q1, reflecting its enhanced precision grade for high-temperature automotive applications.
Is LM2904BTQDGKRQ1 pin-compatible with standard LM2904 variants?
Yes, LM2904BTQDGKRQ1 uses the industry-standard 8-pin VSSOP (DGK) footprint and identical pinout to LM2904-Q1, LM2904B-Q1, and LM2904BA-Q1 variants. Table 6-1 Pin Functions and Figure 6-1 confirm identical terminal assignments across all packages, enabling drop-in replacement in designs using VSSOP-8 layout.
What functional safety documentation is available for LM2904BTQDGKRQ1?
Texas Instruments provides functional safety documentation for LM2904BTQDGKRQ1 including FIT rate data, failure mode analysis, and safety manual supporting ISO 26262 ASIL-B system integration. This documentation is accessible via the product folder link on ti.com and referenced in the Features section of the SLOS414K datasheet as "Functional Safety-Capable".
LM2904BTQDGKRQ1 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:
- -
- 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
LM2904BTQDGKRQ1 FAQ
1.How can I place an order for LM2904BTQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BTQDGKRQ1 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 LM2904BTQDGKRQ1 reliable?
The price and inventory of LM2904BTQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BTQDGKRQ1 is usually 5 days.
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LM2904BTQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BTQDGKRQ1 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 LM2904BTQDGKRQ1?
For technical support, including LM2904BTQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BTQDGKRQ1 requirements.
6.How does Aetrix verify that LM2904BTQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904BTQDGKRQ1 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 LM2904BTQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904BTQDGKRQ1?
All LM2904BTQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BTQDGKRQ1, 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 LM2904BTQDGKRQ1 part is unused and in its original packaging.
Return procedure for LM2904BTQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BTQDGKRQ1 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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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
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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