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Texas Instruments LM2904QPWRQ1
- Part No.:
- LM2904QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904QPWRQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,958
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Product details
Overview
LM2904QPWRQ1 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 input common-mode range including ground - enabling direct low-side current sensing in battery management and motor control circuits.
For engineers reviewing the LM2904QPWRQ1 datasheet, LM2904QPWRQ1 pinout, LM2904QPWRQ1 application, or LM2904QPWRQ1 equivalent, this page delivers verified electrical specs, automotive-grade thermal and ESD performance data, package-specific layout guidance, and functional alternatives validated for body electronics, eCall, and BMS signal conditioning.
Technical Context
The LM2904QPWRQ1 implements a classic voltage-feedback op-amp architecture with internal compensation for unity-gain stability and integrated RF/EMI filtering. Its input stage supports common-mode voltages down to V–, eliminating level-shifting requirements in single-supply sensor interfaces.
It operates across –40°C to +125°C ambient, with ±2 mV maximum input offset voltage (25°C) and ±3.5–12 µV/°C drift, enabling precision DC-coupled amplification in harsh automotive environments without external trimming.
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 load-dump transients. |
| Input Offset Voltage (max) | 2 mV at 25°C - enables accurate low-level signal amplification (e.g., shunt-based current sensing) without calibration. |
| Quiescent Current / Channel | 300 µA typical - allows always-on operation in telematics and eCall modules without excessive battery drain. |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control of motor position feedback, HVAC actuators, and lighting PWM dimming. |
| Common-Mode Input Range | Includes V– (ground) - permits direct connection to low-side shunts and thermistor networks without biasing circuitry. |
| ESD Rating (HBM / CDM) | ±2000 V / ±1500 V - meets AEC-Q100 stress requirements for assembly and field reliability in vehicle harnesses. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood and powertrain locations per AEC-Q100 Grade 1. |
Pinout & Package
LM2904QPWRQ1 is packaged in an 8-pin TSSOP (PW) with nominal body size 3.00 mm × 4.40 mm, optimized for high-density automotive PCBs and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | Amplifier 1 output - drives feedback networks or downstream ADC inputs; capable of sourcing/sinking ≥10 mA. |
| 2 (IN1–) | Negative Input | Inverting input for Amp 1 - accepts differential or single-ended signals; high common-mode rejection up to 100 dB. |
| 3 (IN1+) | Positive Input | Non-inverting input for Amp 1 - used for reference-based sensing or buffer configurations. |
| 4 (V–) | Negative Supply | Lowest potential node - connects to ground in single-supply systems; supports true rail-to-rail input operation. |
| 5 (IN2+) | Positive Input | Non-inverting input for Amp 2 - independent channel enables dual-sensor monitoring (e.g., temperature + voltage). |
| 6 (IN2–) | Negative Input | Inverting input for Amp 2 - configurable as summing node or comparator input in safety-critical subsystems. |
| 7 (OUT2) | Output | Amplifier 2 output - provides redundancy or parallel signal paths in ASIL-B compliant designs. |
| 8 (V+) | Positive Supply | Highest potential node - accepts up to 36 V; internal protection prevents latch-up during battery reverse-connect events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across –40°C to +125°C ambient, with full traceability for OEM PPAP submissions. |
| Integrated RF/EMI filter | Reduces susceptibility to radiated emissions in infotainment and ADAS domains without external ferrites or RC networks. |
| Functional Safety-Capable documentation | TI-provided FIT rate, failure mode analysis, and diagnostic coverage guidance support ISO 26262 ASIL-B system integration. |
| Rail-to-rail input common-mode range | Eliminates need for input bias resistors or level-shifters when interfacing with grounded sensors (e.g., NTC thermistors, shunt resistors). |
| Low quiescent current (300 µA/ch) | Enables continuous monitoring in always-on domains like intrusion detection, battery state-of-charge tracking, and crash-event pre-triggering. |
Applications
| Automotive Body Electronics | Electric Vehicle Battery Management |
|---|---|
Use Scenario: Signal conditioning for door lock actuators, seat position sensors, and ambient light detection in centralized body control modules. IC Role / Device Role / Timing Role: Dual-channel amplifier providing gain and filtering for analog sensor outputs before ADC sampling. Use Value: Low input offset and wide supply range ensure consistent response across varying battery voltage and temperature conditions. | Use Scenario: Amplifying voltage and current sense signals from cell monitoring ICs and shunt resistors in high-voltage battery packs. IC Role / Device Role / Timing Role: Precision front-end amplifier for isolated or non-isolated BMS signal chains operating at 400–800 V system levels. Use Value: Ground-referenced input enables direct low-side shunt measurement without level-shifting, reducing component count and error sources. |
| Emergency Call (eCall) System | Automotive Lighting Control |
Use Scenario: Monitoring microphone pre-amplifier output and vehicle impact sensor signals in always-on eCall telematics units. IC Role / Device Role / Timing Role: Dual op-amp performing audio amplification and crash-accelerometer signal conditioning prior to microcontroller ADC conversion. Use Value: Integrated EMI filtering ensures reliable operation in noisy RF environments near cellular antennas and GPS receivers. | Use Scenario: Closed-loop brightness control for LED headlamps and interior lighting using photodiode feedback and PWM dimming drivers. IC Role / Device Role / Timing Role: Error amplifier comparing sensed LED current against reference to regulate constant-current driver output. Use Value: Unity-gain stability and 1.2 MHz bandwidth allow fast response to PWM transients while maintaining loop stability. |
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 | Same package and pinout; 3 mV max VOS (vs. 2 mV for LM2904QPWRQ1); identical supply range and quiescent current. | Suitable where tighter offset is not required - e.g., non-critical sensor buffering or general-purpose gain stages. | Select when cost sensitivity outweighs need for sub-2-mV offset in production BOMs. |
| LM2904BAQPWRQ1 | Identical to LM2904QPWRQ1 in all published specifications including 2 mV max VOS, 300 µA IQ, and EMI filtering. | No functional difference - documented as drop-in replacement with same qualification and test flow. | Valid alternative if LM2904QPWRQ1 is unavailable; verify lot traceability matches OEM requirements. |
Compared with LM2904BQPWRQ1, LM2904QPWRQ1 offers lower input offset for higher-accuracy signal chains, while LM2904BAQPWRQ1 provides identical performance with alternate part-numbering for logistics flexibility - both maintain full AEC-Q100 Grade 1 compliance and TSSOP-8 compatibility.
Availability
LM2904QPWRQ1 is available at Aetrix Electronics and suitable for automotive lighting, battery management systems, and emergency call (eCall) modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM2904QPWRQ1 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 LM2904-Q1 family was developed specifically for automotive signal conditioning, delivering robust performance in body electronics, powertrain, and safety-critical subsystems under AEC-Q100 qualification.
FAQ
What is the maximum supply voltage rating for LM2904QPWRQ1?
The LM2904QPWRQ1 has an absolute maximum supply voltage of 40 V, with recommended operation from 3 V to 36 V. This 36 V upper limit supports 24 V commercial vehicle systems and accommodates transient overvoltages per ISO 7637-2 Pulse 1 and Pulse 4 standards. Operation beyond 36 V risks parametric degradation and is not guaranteed by TI's characterization data for LM2904QPWRQ1.
Does LM2904QPWRQ1 support rail-to-rail output swing?
LM2904QPWRQ1 does not provide rail-to-rail output swing. Its output can swing within 1.35 V of V+ and 100 mV of V– under light load (50 µA), degrading to ~1.61 V from V+ and ~0.75 V from V– at 1 mA sink/source. This limitation is inherent to its bipolar input stage and must be accounted for in gain-setting and reference design - LM2904QPWRQ1 is optimized for input rail-to-rail, not output.
Is LM2904QPWRQ1 pin-compatible with legacy LM2904-Q1 variants?
Yes, LM2904QPWRQ1 shares identical 8-pin TSSOP (PW) pinout and footprint with LM2904-Q1, LM2904B-Q1, and LM2904BA-Q1. All variants use the same IN1±/IN1+/V–/IN2+/IN2–/OUT2/V+/OUT1 ordering per Figure 6-1. No PCB redesign is needed when upgrading from LM2904-Q1 to LM2904QPWRQ1, though system-level validation of offset, bandwidth, and EMI performance is recommended.
What thermal metrics apply to LM2904QPWRQ1 in TSSOP-8 package?
For LM2904QPWRQ1 in PW (TSSOP-8) package, junction-to-ambient thermal resistance (RθJA) is 171.7°C/W, junction-to-board (RθJB) is 99.2°C/W, and junction-to-case (top) is 68.8°C/W. These values assume JEDEC-standard 2S2P board layout; actual board-level dissipation depends on copper area, via count, and airflow - derating is required above 85°C ambient per TI's thermal guidelines for LM2904QPWRQ1.
How does the integrated EMI filter in LM2904QPWRQ1 improve system robustness?
The integrated EMI filter in LM2904QPWRQ1 attenuates high-frequency noise (typically >30 MHz) coupled onto PCB traces from switching regulators, CAN transceivers, or RF modules. It reduces susceptibility without external components, improving immunity in CISPR 25 Class 5-compliant automotive modules - confirmed by TI's EMC test reports for LM2904QPWRQ1 across 150 kHz–2.5 GHz bands.
LM2904QPWRQ1 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:
- -
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 700 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 3 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-TSSOP
LM2904QPWRQ1 FAQ
1.How can I place an order for LM2904QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904QPWRQ1 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 LM2904QPWRQ1 reliable?
The price and inventory of LM2904QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904QPWRQ1 is usually 5 days.
3.What payment methods are accepted for LM2904QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904QPWRQ1?
LM2904QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904QPWRQ1 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 LM2904QPWRQ1?
For technical support, including LM2904QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904QPWRQ1 requirements.
6.How does Aetrix verify that LM2904QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904QPWRQ1 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 LM2904QPWRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904QPWRQ1?
All LM2904QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904QPWRQ1, 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 LM2904QPWRQ1 part is unused and in its original packaging.
Return procedure for LM2904QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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