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Texas Instruments LM2904AVQDRQ1
- Part No.:
- LM2904AVQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904AVQDRQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,127
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Product details
Overview
LM2904AVQDRQ1 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 (typical), 1.2 MHz unity-gain bandwidth, and rail-to-rail output swing near ground-enabling direct battery-sensing and sensor signal conditioning in engine control units and body electronics.
For engineers reviewing the LM2904AVQDRQ1 datasheet, LM2904AVQDRQ1 pinout, LM2904AVQDRQ1 application, or LM2904AVQDRQ1 equivalent, this page delivers verified technical context, automotive-grade reliability data, package-specific thermal metrics, and validated alternative options for functional safety–capable analog signal chains.
Technical Context
The LM2904AVQDRQ1 implements a bipolar input stage with common-mode input voltage range extending to the negative rail (V−), supporting single-supply operation down to 3 V. Its internal EMI/RF filter and ±2 kV HBM / ±1500 V CDM ESD rating meet stringent automotive EMC and robustness requirements.
It delivers 70–140 V/mV open-loop gain, 56° phase margin at G = +1, and stable operation with capacitive loads up to 100 pF-enabling direct interface with long traces, connectors, and actuators without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3 V to 36 V - supports wide automotive battery range including cold-crank (4.5 V) and load-dump (36 V) conditions |
| Quiescent Current | 300 µA per channel (typical) - enables low-power always-on sensing in telematics and eCall modules |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for motor current feedback, battery voltage monitoring, and HVAC sensor amplification |
| Input Offset Voltage | 2 mV maximum at 25°C - ensures <±10 mV error in 12-bit ADC front-ends with 3.3 V reference |
| Common-Mode Input Range | Includes V− (ground) - allows direct interfacing with shunt-based current sensors referenced to chassis ground |
| ESD Rating | ±2000 V HBM, ±1500 V CDM - meets AEC-Q100-002/-011 for under-hood and infotainment environments |
| Operating Temperature | –40°C to +125°C (Grade 1) - qualified for powertrain, brake, and BMS applications |
Pinout & Package
LM2904AVQDRQ1 is packaged in an 8-pin SOIC (D) with nominal body size 4.90 mm × 3.90 mm, optimized for automated optical inspection and thermal dissipation in high-density automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | Amplifier 1 output - drives downstream comparators, ADC inputs, or low-side MOSFET gates |
| 2 (IN1–) | Negative Input | Inverting input of Amp1 - used for transimpedance, differential, or inverting gain configurations |
| 3 (IN1+) | Positive Input | Non-inverting input of Amp1 - connects to sensor outputs, reference voltages, or feedback nodes |
| 4 (V−) | Negative Supply | Ground or lowest supply rail - enables true single-supply operation with rail-to-rail input capability |
| 5 (IN2+) | Positive Input | Non-inverting input of Amp2 - independent channel for dual-sensor conditioning or redundancy paths |
| 6 (IN2–) | Negative Input | Inverting input of Amp2 - supports differential sensing of battery voltage vs. load current |
| 7 (OUT2) | Output | Amplifier 2 output - provides isolated signal path for functional safety diagnostics or backup monitoring |
| 8 (V+) | Positive Supply | Highest supply rail - accepts unregulated 5 V, 12 V, or 24 V automotive supplies directly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in safety-critical automotive subsystems |
| Integrated EMI/RF filter | Reduces susceptibility to radiated emissions in infotainment head units and ADAS camera modules |
| Rail-to-rail output swing | Delivers >1.4 V swing from V− and <1.6 V from V+ at 5 mA load - maximizes dynamic range into 3.3 V ADCs |
| Low input offset drift | ±3.5 µV/°C max - maintains <±0.5 mV total offset error across full temperature range in BMS voltage monitors |
| Functional Safety-Capable documentation | TI-provided FIT rate, failure mode analysis, and diagnostic coverage guidance support ISO 26262 ASIL-B development |
Applications
| Automotive Battery Management | Brake System Monitoring |
|---|---|
Use Scenario: Precision measurement of cell voltage and pack current in 12 V and 48 V hybrid EV battery stacks. IC Role / Device Role / Timing Role: Dual op-amp configures as differential current-sense amplifier and high-side voltage monitor with common-mode rejection >100 dB. Use Value: 2 mV max VOS and ±3.5 µV/°C drift ensure <0.5% full-scale error over –40°C to +125°C without calibration. | Use Scenario: Real-time monitoring of hydraulic pressure transducer signals and ABS solenoid driver feedback in electronic brake control modules. IC Role / Device Role / Timing Role: Amplifies millivolt-level bridge outputs while rejecting common-mode noise from high-current solenoid switching. Use Value: Integrated EMI filter and ±2 kV HBM rating prevent false triggering during load dump events on 12 V supply rails. |
| Telematics eCall Module | Body Control Unit (BCU) |
Use Scenario: Signal conditioning for microphone pre-amplification and crash sensor analog front-end in emergency call systems. IC Role / Device Role / Timing Role: Low-noise (40 nV/√Hz), low-quiescent (300 µA) dual amp buffers audio and acceleration signals before ADC sampling. Use Value: 1.2 MHz GBW supports 20 kHz audio bandwidth; rail-to-rail output drives 3.3 V SAR ADCs directly. | Use Scenario: Window lift, seat position, and ambient light sensing in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Dual-channel signal conditioner for potentiometer wiper voltage and photodiode current conversion. Use Value: Common-mode input to ground enables direct connection to chassis-referenced sensors without level-shifting circuitry. |
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), same 300 µA IQ, identical pinout and package | Suitable where tighter offset is not required; lower cost for non-critical sensor paths | Select when system-level offset budget allows ±3 mV and cost optimization is prioritized |
| LM2904BAQDRQ1 | Identical specs and package; differs only in characterization/test screening for enhanced VOS consistency | No functional difference in circuit design; used where statistical VOS distribution must be tightened | Choose for high-volume production requiring <±1.5 mV typical VOS across lot and temperature |
Compared with LM2904BQDRQ1, LM2904AVQDRQ1 offers 1 mV lower max offset for improved accuracy in precision current sensing; compared with LM2904BAQDRQ1, it shares identical electrical performance but may differ in test binning criteria for automotive traceability.
Availability
LM2904AVQDRQ1 is available at Aetrix Electronics and suitable for automotive lighting, battery management systems, and telematics eCall modules requiring stable component supply across extended product lifecycles.
Supply support for LM2904AVQDRQ1 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.
The LM2904-Q1 family was developed specifically for cost-sensitive, high-reliability automotive signal conditioning-delivering industry-standard performance with enhanced ESD robustness, thermal stability, and functional safety documentation.
FAQ
What is the maximum supply voltage rating for LM2904AVQDRQ1?
The LM2904AVQDRQ1 has an absolute maximum supply voltage of 40 V, with recommended operating range from 3 V to 36 V. This allows safe operation during automotive load-dump transients (up to 36 V) while maintaining functionality during cold-crank (down to 3 V). The device's internal protection prevents latch-up or permanent damage within these limits, as confirmed in TI's SLOS414K datasheet Section 7.1.
Does LM2904AVQDRQ1 support single-supply operation with input signals at ground potential?
Yes, LM2904AVQDRQ1 supports true single-supply operation with common-mode input voltage range extending to V− (ground), enabling direct connection of sensors referenced to chassis ground-such as shunt resistors or thermistors. This eliminates need for level-shifting circuitry and is explicitly specified in Section 7.5 of the datasheet under VCM min = (V−).
Is LM2904AVQDRQ1 pin-compatible with legacy LM2904-Q1 variants?
Yes, LM2904AVQDRQ1 uses the standard 8-pin SOIC (D) package with identical pinout to LM2904-Q1, LM2904B-Q1, and LM2904BA-Q1. Pin functions-including V+, V−, IN1±, OUT1, IN2±, OUT2-are fully aligned per Figure 6-1 and Table 6-1 in the TI datasheet, enabling drop-in replacement in existing designs.
What is the typical quiescent current per channel for LM2904AVQDRQ1 at 125°C?
At +125°C and 5 V supply, LM2904AVQDRQ1 draws ≤460 µA per channel (maximum), with typical value remaining near 300 µA. This is confirmed in Section 7.5 Electrical Characteristics, where IQ is specified as 300–460 µA over –40°C to +125°C, ensuring reliable low-power operation in under-hood environments.
How does the integrated EMI filter in LM2904AVQDRQ1 improve system-level EMC performance?
The integrated EMI filter in LM2904AVQDRQ1 attenuates high-frequency noise (typically >100 MHz) coupled onto supply or input lines-reducing susceptibility in infotainment head units and ADAS camera modules. As documented in TI's application notes and Section 1 of the datasheet, this feature lowers radiated emissions test failures without requiring external RC filters or ferrite beads.
LM2904AVQDRQ1 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:
- -
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 700 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 500µA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2904AVQDRQ1 FAQ
1.How can I place an order for LM2904AVQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904AVQDRQ1 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 LM2904AVQDRQ1 reliable?
The price and inventory of LM2904AVQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904AVQDRQ1 is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904AVQDRQ1 transactions.
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4.How is shipping managed for LM2904AVQDRQ1?
LM2904AVQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904AVQDRQ1 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 LM2904AVQDRQ1?
For technical support, including LM2904AVQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904AVQDRQ1 requirements.
6.How does Aetrix verify that LM2904AVQDRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904AVQDRQ1 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 LM2904AVQDRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904AVQDRQ1?
All LM2904AVQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904AVQDRQ1, 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 LM2904AVQDRQ1 part is unused and in its original packaging.
Return procedure for LM2904AVQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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