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Texas Instruments LM2904BTQPWRQ1
- Part No.:
- LM2904BTQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904BTQPWRQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,164
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Product details
Overview
LM2904BTQPWRQ1 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 LM2904BTQPWRQ1 datasheet, LM2904BTQPWRQ1 pinout, LM2904BTQPWRQ1 application, or LM2904BTQPWRQ1 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 LM2904BTQPWRQ1 implements a dual, internally compensated voltage-feedback op-amp architecture with rail-to-rail input stage and output swing within 1.5 V of positive rail and 100 mV of negative rail (at 50 µA load). Its design supports single-supply operation down to 3 V while maintaining stable unity-gain performance and high CMRR (>100 dB) across –40°C to +125°C.
It integrates on-die EMI/RF filters and meets AEC-Q100-002 (HBM) and -011 (CDM) standards. The device operates with differential input voltage tolerance up to ±32 V and supports output short-circuit protection with unlimited duration at VS ≤ 15 V - critical for automotive body electronics and telematics power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - enables direct integration into 12 V and 24 V automotive battery rails without external regulators |
| Input Offset Voltage (max) | 2 mV at 25°C - ensures <±10 mV error in 5 V reference-based sensor amplification over full temperature range |
| Quiescent Current / Channel | 300 µA typical - supports always-on subsystems (e.g., eCall backup power) with sub-1 mA total draw |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control of DC-DC converters and motor phase current feedback up to ~100 kHz |
| Common-Mode Input Range | Includes ground (V–) - allows direct interface with shunt resistors placed on low-side of loads without level-shifting circuitry |
| ESD Rating (HBM) | ±2000 V - exceeds automotive board-level ESD requirements per ISO 10605 for under-hood modules |
| Operating Temperature | –40°C to +125°C ambient - validated for engine bay, transmission, and ADAS ECU mounting locations |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), thermally enhanced for automotive PCB layouts with exposed pad option (not applicable to PW variant); RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 (Pin 1) | Output | Amplifier 1 output - drives feedback networks or downstream ADC inputs; capable of sourcing/sinking ±20 mA |
| IN1– (Pin 2) | Negative Input | Inverting input for Amp 1 - accepts differential signals or configured as summing node in active filters |
| IN1+ (Pin 3) | Positive Input | Non-inverting input for Amp 1 - used for reference biasing or high-impedance sensor interfaces |
| V– (Pin 4) | Negative Supply | Ground or negative rail - serves as return path for both amplifiers; must be low-impedance for noise immunity |
| IN2+ (Pin 5) | Positive Input | Non-inverting input for Amp 2 - independent channel enables dual-sensor monitoring (e.g., dual BMS cell voltages) |
| IN2– (Pin 6) | Negative Input | Inverting input for Amp 2 - supports differential measurement of motor phase currents or battery stack voltages |
| OUT2 (Pin 7) | Output | Amplifier 2 output - isolated signal path avoids crosstalk in multi-channel analog front-ends |
| V+ (Pin 8) | Positive Supply | Primary power rail - decoupling capacitor (≥100 nF) required within 5 mm for EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across –40°C to +125°C ambient, eliminating need for additional qualification testing |
| Integrated RF/EMI filter | Reduces susceptibility to 100 MHz–2 GHz radiated emissions - critical for compliance in infotainment and radar subsystems |
| Functional Safety-Capable | Documentation available (ISO 26262 ASIL-B ready) to accelerate FMEDA and safety analysis for ADAS and powertrain applications |
| Rail-to-rail input common-mode range | Enables direct connection to ground-referenced shunts without external biasing - simplifies current-sense topology and reduces BOM count |
| Low input offset drift | ±3.5 µV/°C max - maintains <±0.5 mV total offset error over full temperature range, improving long-term accuracy in thermal cycling environments |
Applications
| Automotive Battery Management System (BMS) | Electric Power Steering (EPS) Sensor Interface |
|---|---|
Use Scenario: Monitoring individual cell voltages and pack current in 48 V mild-hybrid and BEV battery packs using precision shunt-based sensing. IC Role / Device Role / Timing Role: Dual op-amp performs simultaneous differential voltage amplification (cell taps) and bidirectional current sense amplification (shunt resistor). Use Value: 2 mV max VOS and rail-to-rail input enable <0.1% full-scale error in 3.6 V cell measurement at 125°C - meeting ASIL-C diagnostic coverage requirements. | Use Scenario: Conditioning torque sensor and motor position resolver signals in EPS control units subject to vibration and EMI. IC Role / Device Role / Timing Role: Amplifies low-amplitude analog outputs from magneto-resistive sensors and provides EMI-filtered signal paths to MCU ADC inputs. Use Value: Integrated RF filter and ±2 kV HBM rating ensure reliable operation in proximity to high-current motor drivers without external ferrites or TVS diodes. |
| Telematics Control Unit (TCU) Analog Front-End | Automotive Lighting Driver Feedback |
Use Scenario: Signal conditioning for GNSS antenna LNA bias, CAN transceiver reference, and vehicle motion sensor interfaces in always-connected TCUs. IC Role / Device Role / Timing Role: Provides gain, level-shifting, and filtering for multiple analog sensor channels sharing one dual-op-amp die. Use Value: 300 µA/channel quiescent current allows continuous monitoring during sleep mode (<1 mA total), extending backup battery life beyond 72 hours. | Use Scenario: Closed-loop current regulation for adaptive LED headlamps and DRLs using PWM-controlled constant-current drivers. IC Role / Device Role / Timing Role: Amplifies current-sense feedback from high-side shunt to comparator or PWM controller input. Use Value: Common-mode input range including ground permits direct placement of shunt on LED cathode side - avoiding high-voltage isolation components and reducing layout complexity. |
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 SOIC-8 package; 3 mV max VOS (vs. 2 mV for LM2904BTQPWRQ1); identical electrical specs otherwise | Suitable where 1 mV VOS margin is acceptable; lower cost in volume SOIC-8 designs | Select when TSSOP-8 footprint is not required and cost optimization prioritizes SOIC-8 assembly |
| LM2904BAQPWRQ1 | Same TSSOP-8 package; identical 2 mV max VOS and all other specs - functionally identical part number variant | No functional difference; alternate ordering code for same device | Verify manufacturer's orderable addendum - LM2904BAQPWRQ1 and LM2904BTQPWRQ1 refer to identical silicon in TSSOP-8 |
Compared with LM2904BQPWRQ1, LM2904BTQPWRQ1 offers tighter input offset for precision current sensing, while LM2904BAQPWRQ1 is a direct form-fit-function match - making LM2904BTQPWRQ1 optimal for space-constrained TSSOP-8 layouts requiring best-in-class offset performance.
Availability
LM2904BTQPWRQ1 is available at Aetrix Electronics and suitable for automotive lighting, battery management systems, and electric power steering applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BTQPWRQ1 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 automotive signal conditioning in safety-critical and high-reliability systems - targeting body electronics, powertrain, and ADAS subsystems where robustness, longevity, and functional safety readiness are mandatory.
FAQ
What is the maximum supply voltage rating for LM2904BTQPWRQ1?
The LM2904BTQPWRQ1 supports a maximum supply voltage of 40 V (absolute maximum rating), with recommended operating range from 3 V to 36 V. This allows direct connection to 24 V commercial vehicle batteries and compatibility with 12 V/48 V hybrid architectures without external regulation - verified per TI SLOS414K Rev K absolute maximum ratings table.
Does LM2904BTQPWRQ1 support single-supply operation with ground-referenced inputs?
Yes, LM2904BTQPWRQ1 supports true single-supply operation with common-mode input voltage range extending to V– (ground), enabling direct interfacing with shunt resistors, thermistors, or other ground-referenced sensors without level-shifting circuitry - confirmed in Section 7.5 Electrical Characteristics and Figure 6-1 pin configuration.
Is LM2904BTQPWRQ1 pin-compatible with legacy LM2904-Q1 variants?
Yes, LM2904BTQPWRQ1 uses the standard 8-pin TSSOP package with identical pinout to LM2904-Q1, LM2904B-Q1, and LM2904BA-Q1 - as documented in Table 6-1 Pin Functions and Figure 6-1. No PCB redesign is needed when upgrading from earlier variants in TSSOP-8 footprint.
What functional safety documentation is available for LM2904BTQPWRQ1?
Texas Instruments provides functional safety documentation for LM2904BTQPWRQ1 including FIT rate data, failure mode analysis, and safety manual supporting ISO 26262 ASIL-B development - accessible via TI product folder links and referenced in the "Functional Safety-Capable" feature section of the SLOS414K datasheet.
How does the integrated EMI filter in LM2904BTQPWRQ1 improve system-level EMC performance?
The integrated RF/EMI filter in LM2904BTQPWRQ1 attenuates high-frequency noise (100 MHz–2 GHz) coupled onto input traces, reducing radiated emissions and improving immunity in dense automotive PCBs - validated by TI's typical characteristics (Figure 7-13 PSRR/CMRR vs frequency) and referenced in Feature section bullet point 7 of the SLOS414K datasheet.
LM2904BTQPWRQ1 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:
- Push-Pull
- 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):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
LM2904BTQPWRQ1 FAQ
1.How can I place an order for LM2904BTQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BTQPWRQ1 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 LM2904BTQPWRQ1 reliable?
The price and inventory of LM2904BTQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BTQPWRQ1 is usually 5 days.
3.What payment methods are accepted for LM2904BTQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BTQPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BTQPWRQ1?
LM2904BTQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BTQPWRQ1 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 LM2904BTQPWRQ1?
For technical support, including LM2904BTQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BTQPWRQ1 requirements.
6.How does Aetrix verify that LM2904BTQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904BTQPWRQ1 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 LM2904BTQPWRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904BTQPWRQ1?
All LM2904BTQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BTQPWRQ1, 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 LM2904BTQPWRQ1 part is unused and in its original packaging.
Return procedure for LM2904BTQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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