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Texas Instruments LM2904BQDRQ1
- Part No.:
- LM2904BQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2904BQDRQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,191
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Product details
Overview
LM2904BQDRQ1 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 LM2904BQDRQ1 datasheet, LM2904BQDRQ1 pinout, LM2904BQDRQ1 application, or LM2904BQDRQ1 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 3 mV max input offset voltage at 25°C.
Technical Context
The LM2904BQDRQ1 implements a bipolar-input op-amp architecture optimized for single-supply operation in harsh automotive environments. Its input stage supports common-mode voltages down to V– (ground), and its output can swing within 1.5 V of V+ and 100 mV of V– at light load - critical for signal conditioning near battery rails.
It features internal compensation for unity-gain stability, 56° phase margin with 20 pF capacitive load, and slew rate of 0.5 V/µs. The device includes integrated RF and EMI filters to suppress high-frequency interference from powertrain and infotainment subsystems without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports 12 V and 24 V automotive battery systems with headroom for load-dump transients. |
| Input Offset Voltage (max) | 3 mV at 25°C - ensures ≤30 mV error in 10× gain current-sense amplifiers across temperature. |
| Quiescent Current / Ch | 300 µA typical - enables always-on monitoring in telematics and eCall modules without excessive battery drain. |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control in motor position feedback and HVAC blower regulation. |
| Common-Mode Input Range | Includes V– (ground) - allows direct sensing of shunt resistors referenced to chassis ground in BMS and ABS. |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100-002 requirements for assembly and field reliability in vehicle harnesses. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood and cabin applications including engine control and infotainment. |
Pinout & Package
LM2904BQDRQ1 is packaged in an 8-pin SOIC (D) package measuring 4.90 mm × 3.90 mm, with standard industry pinout compatible with legacy LM2904-Q1 designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | First amplifier output - drives sensor buffers or comparator inputs with 1.5 V headroom to V+ and 100 mV to V–. |
| 2 (IN1–) | Negative Input | Inverting input of first op-amp - used for current-sense feedback or active filter configurations. |
| 3 (IN1+) | Positive Input | Non-inverting input of first op-amp - accepts ground-referenced signals directly due to rail-to-rail CMVR. |
| 4 (V–) | Negative Supply | Ground reference for single-supply operation - must be connected to chassis or system ground. |
| 5 (IN2+) | Positive Input | Non-inverting input of second op-amp - supports dual-sensor interfaces (e.g., temperature + voltage). |
| 6 (IN2–) | Negative Input | Inverting input of second op-amp - configurable as differential receiver for CAN bus pre-amplification. |
| 7 (OUT2) | Output | Second amplifier output - independent channel for signal conditioning in redundant safety paths. |
| 8 (V+) | Positive Supply | Main power rail - accepts 12 V or 24 V battery input with internal protection against overvoltage up to 40 V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - eliminates need for derating in engine bay or powertrain ECUs. |
| Integrated RF/EMI filter | Reduces susceptibility to AM-band and cellular interference without external ferrites or RC networks. |
| Functional Safety-Capable | Documentation available for ISO 26262 ASIL-B system integration - supports diagnostic coverage analysis for brake and steering assist. |
| Rail-to-rail input common-mode range | Enables direct interface with 0 V–referenced shunts in battery cell monitoring and regenerative braking circuits. |
| Low quiescent current (300 µA/ch) | Permits continuous operation in always-on domains like intrusion detection and emergency call (eCall) wake-up logic. |
Applications
| Automotive Lighting Control | Body Electronics Gateway |
|---|---|
Use Scenario: Regulating LED headlamp brightness via PWM-controlled current sense feedback. IC Role / Device Role / Timing Role: Dual op-amp configured as current-sense amplifier and error integrator in closed-loop dimming circuit. Use Value: 3 mV max VOS ensures <±3% current accuracy across temperature; rail-to-rail input enables direct shunt measurement at ground potential. | Use Scenario: Signal conditioning for door lock actuator position sensors and window lift motor feedback. IC Role / Device Role / Timing Role: First amplifier buffers Hall-effect sensor output; second performs differential subtraction for noise rejection. Use Value: Integrated EMI filter prevents false triggering from RF emissions of nearby Bluetooth modules; 125°C rating supports under-dash mounting. |
| Telematics Control Unit (TCU) | Battery Management System (BMS) |
Use Scenario: Amplifying GPS antenna LNA output and conditioning GNSS baseband signals before ADC sampling. IC Role / Device Role / Timing Role: Low-noise op-amp stage providing gain and DC offset correction prior to analog front-end. Use Value: 40 nV/√Hz input voltage noise density preserves SNR in weak-signal reception; 2 kV HBM protects against ESD during module handling. | Use Scenario: Monitoring individual cell voltages and pack current in 48 V mild-hybrid battery stacks. IC Role / Device Role / Timing Role: Dual-channel configuration for simultaneous cell voltage scaling and shunt-based current amplification. Use Value: 36 V max supply accommodates full 48 V system transients; 300 µA/ch IQ extends sleep-mode battery life in parked state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BAQDRQ1 | 2 mV max VOS (vs. 3 mV), same package and pinout | Better accuracy required in precision BMS voltage monitoring or torque sensor signal chains | Select when <2.5 mV total offset error budget is mandated for ASIL-C diagnostics. |
| LM2904QDRQ1 | 7 mV max VOS, 26 V max supply, no integrated EMI filter | Legacy cost-sensitive body control modules where RF immunity is less critical | Use only in non-safety-critical zones with shielded harnesses and lower ambient temperature limits. |
Compared with LM2904QDRQ1, LM2904BQDRQ1 delivers tighter offset, higher supply tolerance, and built-in EMI suppression - making it suitable for next-gen ADAS and electrification systems where signal integrity and functional safety coexist.
Availability
LM2904BQDRQ1 is available at Aetrix Electronics and suitable for automotive lighting control, battery management systems, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904BQDRQ1 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 LM2904B-Q1 product line was developed specifically for automotive signal conditioning - delivering enhanced accuracy, ESD robustness, and EMI resilience over legacy op-amps while maintaining pin compatibility and cost efficiency.
FAQ
What automotive qualification does LM2904BQDRQ1 meet?
LM2904BQDRQ1 is AEC-Q100 qualified for Grade 1 operation (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V and CDM rating of ±1500 V. It also carries functional safety documentation to support ISO 26262 system-level development. These qualifications are verified per TI's production test flow and documented in the official SLOS414K datasheet revision K.
Does LM2904BQDRQ1 support single-supply operation with ground-referenced inputs?
Yes, LM2904BQDRQ1 supports true single-supply operation with common-mode input voltage range extending to V– (ground). This allows direct interfacing with shunt resistors, thermistors, or potentiometers referenced to chassis ground - a key capability confirmed in Section 7.5 of the datasheet for both 5 V and 36 V supplies.
What is the maximum supply voltage rating for LM2904BQDRQ1?
The absolute maximum supply voltage for LM2904BQDRQ1 is 40 V, with recommended operating range from 3 V to 36 V. This 36 V upper limit enables robust operation in 24 V commercial vehicle systems and 48 V mild-hybrid architectures during load-dump events, as specified in Section 7.1 of the SLOS414K datasheet.
Is LM2904BQDRQ1 pin-compatible with earlier LM2904-Q1 variants?
Yes, LM2904BQDRQ1 uses identical 8-pin SOIC (D), TSSOP (PW), and VSSOP (DGK) packages with identical pinout per Figure 6-1 and Table 6-1 in the datasheet. No PCB layout changes are required when upgrading from LM2904QDRQ1 or LM2904QDR, though performance improvements (lower VOS, EMI filter) may require minor schematic review.
What thermal metrics apply to LM2904BQDRQ1 in SOIC package?
For the SOIC (D) package, LM2904BQDRQ1 has RθJA = 124.7°C/W, RθJC(top) = 66.9°C/W, and RθJB = 67.9°C/W, as published in Section 7.4 of the datasheet. These values assume JEDEC-standard PCB mounting and enable thermal design validation for under-hood applications up to 125°C ambient.
LM2904BQDRQ1 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:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 1 mV
- 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-SOIC
LM2904BQDRQ1 FAQ
1.How can I place an order for LM2904BQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BQDRQ1 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 LM2904BQDRQ1 reliable?
The price and inventory of LM2904BQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BQDRQ1 is usually 5 days.
3.What payment methods are accepted for LM2904BQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BQDRQ1?
LM2904BQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BQDRQ1 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 LM2904BQDRQ1?
For technical support, including LM2904BQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BQDRQ1 requirements.
6.How does Aetrix verify that LM2904BQDRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2904BQDRQ1 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 LM2904BQDRQ1 meets industry standards.
7.What is the process for return or replacement of LM2904BQDRQ1?
All LM2904BQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BQDRQ1, 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 LM2904BQDRQ1 part is unused and in its original packaging.
Return procedure for LM2904BQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BQDRQ1 Tags
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LM358DT
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