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Texas Instruments LM2904QPWRG4Q1
- Part No.:
- LM2904QPWRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904QPWRG4Q1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
LM2904QPWRG4Q1 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 brake control circuits.
For engineers reviewing the LM2904QPWRG4Q1 datasheet, LM2904QPWRG4Q1 pinout, LM2904QPWRG4Q1 application, or LM2904QPWRG4Q1 equivalent, this page delivers verified specifications, validated pin functions, automotive-grade thermal and ESD performance data, and real-world implementation context for body electronics, eCall, and inverter monitoring designs.
Technical Context
The LM2904QPWRG4Q1 implements a bipolar-input, internally compensated two-stage op-amp architecture optimized for single-supply operation. Its input stage supports common-mode voltage down to V– (ground), while output swing reaches within 1.5 V of V+ and 100 mV of V– at 50 µA load - critical for signal conditioning in 12 V/24 V automotive subsystems.
It integrates RF/EMI filtering and meets AEC-Q100 HBM ±2 kV / CDM ±1.5 kV ESD requirements. Functional safety documentation support is provided for ISO 26262 ASIL-B system integration, with guaranteed offset voltage ≤3 mV (max at 25°C) and drift ≤12 µV/°C over –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports direct connection to 12 V and 24 V vehicle batteries without external regulation |
| Quiescent Current | 300 µA per channel (typical) - enables always-on sensor interfaces with minimal battery drain |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for motor current feedback, cabin temperature loop control, and audio pre-amplification |
| Input Offset Voltage | ≤3 mV (max at 25°C) - ensures <±0.5% error in 12-bit ADC front-end applications at room temperature |
| Common-Mode Input Range | Includes V– (ground) - allows direct measurement of shunt-based currents referenced to chassis ground |
| ESD Rating | HBM ±2000 V, CDM ±1500 V - meets automotive board-level robustness requirements per AEC-Q100-002/-011 |
| Operating Temperature | –40°C to +125°C (Grade 1) - qualified for under-hood and powertrain-adjacent placement |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), thermally enhanced for automotive PCB layouts with constrained airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | First amplifier output - drives feedback networks or ADC inputs; capable of sourcing/sinking ±20 mA |
| 2 (IN1–) | Negative Input | Inverting input of first amplifier - used in transimpedance, differential, or active filter configurations |
| 3 (IN1+) | Positive Input | Non-inverting input of first amplifier - accepts ground-referenced sensor signals (e.g., thermistor, potentiometer) |
| 4 (V–) | Negative Supply | Lowest potential node - tied to chassis ground in single-supply automotive systems |
| 5 (IN2+) | Positive Input | Non-inverting input of second amplifier - enables dual-sensor monitoring (e.g., dual temperature zones) |
| 6 (IN2–) | Negative Input | Inverting input of second amplifier - supports independent gain-setting or comparator hysteresis |
| 7 (OUT2) | Output | Second amplifier output - provides redundancy or parallel signal paths without additional ICs |
| 8 (V+) | Positive Supply | Highest potential node - connects directly to battery rail or post-regulator 5 V/3.3 V domain |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient - eliminates derating calculations for engine bay placements |
| Integrated RF/EMI filter | Reduces susceptibility to AM-band noise (0.5–30 MHz) in infotainment and telematics modules without external ferrites |
| Rail-to-rail input (to V–) | Enables direct interface with 0 V–referenced sensors (e.g., NTC thermistors, Hall-effect switches) without level-shifting circuitry |
| Low input bias current (±35 nA max) | Minimizes voltage error across high-impedance sources like pH sensors or piezoelectric elements in passive safety systems |
| Functional safety documentation support | Provides FIT rate, failure mode analysis, and diagnostic coverage guidance for ASIL-B compliant BMS and brake ECUs |
Applications
| Automotive Lighting Control | Body Electronics Gateway |
|---|---|
Use Scenario: Regulating LED headlamp brightness via PWM-controlled current sense amplification. IC Role / Device Role / Timing Role: Dual op-amp configures as current-sense amplifier (Channel 1) and error integrator (Channel 2) in closed-loop dimming control. Use Value: Ground-sensing input enables direct shunt measurement on low-side LED string; 300 µA IQ extends standby battery life in parked vehicle mode. | Use Scenario: Signal conditioning for door lock actuator position feedback and window lift motor current monitoring. IC Role / Device Role / Timing Role: First amplifier buffers hall-effect sensor output; second amplifier compares motor current against threshold for stall detection. Use Value: 1.2 MHz GBW supports fast transient response during window pinch detection; AEC-Q100 qualification ensures reliability across 15-year vehicle lifecycle. |
| eCall System Sensor Interface | Inverter Motor Control Feedback |
Use Scenario: Amplifying accelerometer and microphone signals for crash event detection and voice transmission preprocessing. IC Role / Device Role / Timing Role: Dual-channel configuration handles analog front-end for impact sensing (Channel 1) and audio pre-amplification (Channel 2). Use Value: Integrated EMI filter suppresses ignition noise coupling into microphone path; 36 V tolerance accommodates load-dump transients up to 40 V. | Use Scenario: Isolated current sensing in 3-phase inverter leg for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: Configured as bidirectional shunt amplifier (Channel 1) and DC bus voltage monitor (Channel 2) feeding MCU ADC. Use Value: Common-mode input range to V– allows direct connection to low-side shunts; 3 mV VOS ensures <0.1% current measurement error at 25°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BQPWRQ1 | Same package, identical electrical specs, newer revision with updated CDM rating (±1500 V vs ±750 V pre-2022) | No functional difference; fully compatible in new designs and drop-in replacement for legacy LM2904QPWRG4Q1 | Select for new designs requiring latest AEC-Q100 test compliance and enhanced CDM robustness |
| LM2904BAQPWRQ1 | Lower max input offset voltage (2 mV vs 3 mV), same IQ, GBW, and package | Better precision for high-resolution current sensing (e.g., BMS cell balancing), but higher cost | Choose when offset-critical signal chains demand tighter initial accuracy without calibration |
Compared with LM2904QPWRG4Q1, LM2904BQPWRQ1 offers identical functionality with improved CDM ESD margin, while LM2904BAQPWRQ1 trades minor cost increase for 33% lower offset voltage - making it optimal for precision analog front-ends where calibration overhead must be minimized.
Availability
LM2904QPWRG4Q1 is available at Aetrix Electronics and suitable for automotive lighting control, body electronics gateways, and eCall system sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for LM2904QPWRG4Q1 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 solutions, with deep expertise in automotive-grade reliability and functional safety.
The LM2904-Q1 family was designed specifically for cost-sensitive automotive subsystems requiring robust, qualified analog signal conditioning - targeting body control modules, lighting drivers, and safety-critical sensor interfaces where long-term supply stability and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum supply voltage rating for LM2904QPWRG4Q1?
The LM2904QPWRG4Q1 has an absolute maximum supply voltage (VS = V+ – V–) of 40 V, with recommended operating range from 3 V to 36 V. This allows direct use across 12 V and 24 V automotive battery systems, including transient conditions like load dump (up to 40 V), as specified in Section 7.1 of the TI SLOS414K datasheet.
Does LM2904QPWRG4Q1 support rail-to-rail input operation?
The LM2904QPWRG4Q1 supports common-mode input voltage down to V– (ground), enabling true single-supply operation with ground-referenced sensors. However, the upper limit is (V+ – 1.5 V) at 3–36 V supply, so it is not rail-to-rail on the positive side. This design balances precision and robustness for automotive analog front-ends.
Is LM2904QPWRG4Q1 pin-compatible with standard LM2904 variants?
Yes - LM2904QPWRG4Q1 uses the industry-standard TSSOP-8 pinout defined in TI's LM2904-Q1 family. Pin assignments match LM2904BQPWRQ1 and LM2904BAQPWRQ1 exactly, enabling direct PCB reuse across qualified variants without layout changes.
What is the typical quiescent current per channel for LM2904QPWRG4Q1?
The LM2904QPWRG4Q1 draws 300 µA per channel (typical) at 25°C and 5 V supply, rising to 460 µA (max) over –40°C to +125°C. This ultra-low IQ enables always-on monitoring in battery-powered automotive modules such as keyless entry receivers and tire pressure sensor interfaces.
How does the integrated EMI filter in LM2904QPWRG4Q1 improve system-level robustness?
The LM2904QPWRG4Q1 includes on-die RF/EMI filtering that attenuates conducted noise in the 0.5–30 MHz band - critical for suppressing ignition interference and AM radio band coupling in telematics and infotainment systems. This eliminates need for external RC filters or ferrite beads, reducing BOM count and PCB area in space-constrained automotive ECUs.
LM2904QPWRG4Q1 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
LM2904QPWRG4Q1 FAQ
1.How can I place an order for LM2904QPWRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904QPWRG4Q1 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 LM2904QPWRG4Q1 reliable?
The price and inventory of LM2904QPWRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904QPWRG4Q1 is usually 5 days.
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4.How is shipping managed for LM2904QPWRG4Q1?
LM2904QPWRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904QPWRG4Q1 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 LM2904QPWRG4Q1?
For technical support, including LM2904QPWRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904QPWRG4Q1 requirements.
6.How does Aetrix verify that LM2904QPWRG4Q1 is sourced from the original manufacturer or authorized distributors?
All LM2904QPWRG4Q1 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 LM2904QPWRG4Q1 meets industry standards.
7.What is the process for return or replacement of LM2904QPWRG4Q1?
All LM2904QPWRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904QPWRG4Q1, 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 LM2904QPWRG4Q1 part is unused and in its original packaging.
Return procedure for LM2904QPWRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904QPWRG4Q1 Tags
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