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Texas Instruments LM2904PWRG3
- Part No.:
- LM2904PWRG3
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904PWRG3.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,490
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Product details
Overview
LM2904PWRG3 from Texas Instruments is a dual operational amplifier optimized for industrial and automotive applications, featuring rail-to-rail input (including ground), 3V–36V wide supply range, 1.2MHz unity-gain bandwidth, 300µA/ch quiescent current, and ±3mV max input offset voltage at 25°C. It serves as a general-purpose signal conditioning and feedback amplifier in power supply control loops, motor driver current sensing, and sensor interface circuits.
For engineers reviewing the LM2904PWRG3 datasheet, LM2904PWRG3 pinout, LM2904PWRG3 application, or LM2904PWRG3 equivalent, this page delivers verified electrical specifications, TSSOP-8 package details, thermal performance data, ESD robustness (2kV HBM), and validated alternative options for cost-sensitive, high-reliability analog designs.
Technical Context
The LM2904PWRG3 implements a bipolar-input, internally compensated two-stage op-amp architecture with common-mode input voltage range extending to V– (ground in single-supply operation), enabling direct low-side current sensing. Its 1.2MHz gain-bandwidth product supports stable closed-loop operation at unity gain without external compensation.
Designed for rugged environments, it integrates RF/EMI filtering and achieves 2kV HBM ESD rating. The device operates across –40°C to +125°C ambient temperature, matching automotive-grade thermal requirements while maintaining 300µA/ch quiescent current and ±3mV input offset voltage maximum at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports single-supply 5V/12V/24V systems and dual-supply ±15V industrial rails |
| Unity-Gain Bandwidth | 1.2MHz - enables stable amplification of signals up to ~100kHz with gain ≥10, suitable for DC–10kHz sensor conditioning |
| Input Offset Voltage (max, 25°C) | ±3mV - ensures ≤3mV output error at zero differential input, critical for precision current sensing and reference buffering |
| Quiescent Current per Channel | 300µA - enables low-power operation in always-on monitoring circuits without compromising bandwidth |
| Common-Mode Input Range | Includes V– (ground) - allows direct interfacing with shunt resistors placed on ground side, eliminating level-shifting circuitry |
| ESD Rating (HBM) | 2000V - provides robust handling during board assembly and field deployment in electrically noisy environments |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor power electronics |
Pinout & Package
TSSOP-8 (PW) package: 3mm × 6.4mm body, 0.65mm pitch, surface-mount, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Delivers buffered, inverted or non-inverted signal depending on configuration; capable of sourcing/sinking ±20mA |
| 2 (IN1–) | Amplifier 1 inverting input | Accepts feedback or signal path with common-mode range down to V–; high impedance (4GΩ||1.5pF) |
| 3 (IN1+) | Amplifier 1 non-inverting input | Accepts reference or sensor signal; same common-mode and impedance specs as IN1– |
| 4 (V–) | Negative supply / ground | Reference node for both amplifiers; common-mode input extends to this pin, enabling true ground-sensing capability |
| 5 (IN2+) | Amplifier 2 non-inverting input | Independent second channel input; identical electrical characteristics to IN1+ |
| 6 (IN2–) | Amplifier 2 inverting input | Independent second channel input; supports separate feedback network or differential configuration |
| 7 (OUT2) | Amplifier 2 output | Second independent output; shares same drive strength and rail-swing behavior as OUT1 |
| 8 (V+) | Positive supply | Single positive rail for dual-supply or single-supply operation; supports up to 36V absolute max |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– inclusive) | Enables direct connection to ground-referenced shunts and sensors without level shifters or bias networks |
| 1.2MHz unity-gain stable bandwidth | Supports closed-loop configurations up to 100kHz with minimal phase margin degradation (56°) |
| Integrated RF/EMI filter | Reduces susceptibility to conducted and radiated noise in motor drive and switching power supply environments |
| 2kV HBM ESD rating | Eliminates need for external protection diodes in most industrial PCB layouts, reducing BOM count |
| –40°C to +125°C operating range | Validated for under-hood automotive, industrial inverters, and outdoor HVAC control modules |
Applications
| Motor Current Sensing | Power Supply Feedback Loop |
|---|---|
Use Scenario: Monitoring phase current in BLDC motor drivers using low-side shunt resistors. IC Role / Device Role / Timing Role: Dual op-amp configured as two independent current-to-voltage converters, one per phase. Use Value: Ground-referenced input eliminates level-shifting components; 300µA/ch quiescent current minimizes standby loss in battery-powered tools. |
Use Scenario: Amplifying error signal between output voltage sense and reference in isolated DC-DC converters. IC Role / Device Role / Timing Role: Error amplifier in secondary-side regulation loop, driving optocoupler input. Use Value: 1.2MHz GBW ensures fast transient response; ±3mV offset maintains tight output voltage regulation (<±1%) across line/load changes. |
| Industrial Sensor Interface | Automotive Cabin Climate Control |
Use Scenario: Conditioning thermistor and humidity sensor outputs in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amp buffers reference voltage, the other amplifies sensor bridge output. Use Value: Common-mode range to V– accommodates grounded sensor elements; 2kV HBM withstands factory ESD events during assembly. |
Use Scenario: Amplifying cabin temperature sensor signals and driving fan speed PWM comparators in HVAC modules. IC Role / Device Role / Timing Role: Signal conditioner and comparator front-end for analog temperature feedback paths. Use Value: –40°C to +125°C qualification ensures reliability in dashboard-mounted units; TSSOP-8 footprint saves space vs SOIC-8. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904DR | SOIC-8 package (4.9mm × 6mm); identical electrical specs but higher RθJA (124.7°C/W vs 171.7°C/W for TSSOP) | Better suited for through-hole prototyping or legacy board rework where SOIC footprint exists | Select when thermal budget allows higher junction rise or when existing SOIC layout must be reused |
| LM2904BQDRQ1 | AEC-Q100 Grade 1 qualified (–40°C to +125°C), same TSSOP-8 package, enhanced process control for automotive production traceability | Required for new automotive ECUs; not necessary for industrial equipment with internal qualification | Choose for safety-critical automotive applications requiring PPAP documentation and lot-level reliability data |
Compared with LM2904DR and LM2904BQDRQ1, the LM2904PWRG3 offers optimal thermal performance in space-constrained industrial designs, while avoiding automotive qualification overhead unless mandated by OEM requirements.
Availability
LM2904PWRG3 is available at Aetrix Electronics and suitable for industrial motor control, power supply feedback, and automotive climate systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM2904PWRG3 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 over 90 years of innovation in power management, signal chain, and microcontroller solutions.
The LM2904 series belongs to TI's industry-standard operational amplifier portfolio, designed specifically for cost-sensitive, high-reliability applications in industrial automation, automotive subsystems, and consumer power electronics.
FAQ
What is the maximum supply voltage for LM2904PWRG3?
The LM2904PWRG3 supports a maximum supply voltage of 36V across V+ and V– terminals. Absolute maximum ratings specify ±20V differential or 40V total, but recommended operating conditions limit continuous operation to 3V–36V. Exceeding 36V risks permanent damage, especially under transient conditions or elevated temperature.
Does LM2904PWRG3 support single-supply operation with input referenced to ground?
Yes, the LM2904PWRG3 supports true single-supply operation with inputs referenced to ground. Its common-mode input voltage range extends to V–, allowing direct connection of inverting/non-inverting inputs to ground-based shunt resistors or sensors without external biasing networks - a key advantage over older LM2904 variants with limited input range.
What is the typical output swing capability of LM2904PWRG3 near the negative rail?
At room temperature and with 1mA load, the LM2904PWRG3 output swings within 100mV of the negative rail (V–). Under worst-case conditions (–40°C to +125°C, 5mA load), output can reach within 20mV of V–, enabling accurate low-side signal reconstruction in precision current sensing applications.
Is LM2904PWRG3 pin-compatible with standard LM2904 SOIC-8 versions?
No - LM2904PWRG3 uses a TSSOP-8 (PW) package with 0.65mm pitch and 3mm × 6.4mm footprint, whereas standard LM2904 SOIC-8 (e.g., LM2904DR) uses 1.27mm pitch and 4.9mm × 6mm dimensions. Pin numbering and functions are identical, but PCB layout and soldering processes differ significantly due to package geometry and thermal pad absence.
How does the EMI filtering in LM2904PWRG3 improve system-level noise immunity?
The integrated RF/EMI filter in LM2904PWRG3 attenuates high-frequency noise (typically >10MHz) coupled onto input traces from nearby switching regulators or motor drivers. This reduces the need for external RC filters or ferrite beads, preserving signal integrity in noisy industrial environments while maintaining DC accuracy and 1.2MHz bandwidth for intended analog signals.
LM2904PWRG3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
LM2904PWRG3 FAQ
1.How can I place an order for LM2904PWRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904PWRG3 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 LM2904PWRG3 reliable?
The price and inventory of LM2904PWRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904PWRG3 is usually 5 days.
3.What payment methods are accepted for LM2904PWRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904PWRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904PWRG3?
LM2904PWRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904PWRG3 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 LM2904PWRG3?
For technical support, including LM2904PWRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904PWRG3 requirements.
6.How does Aetrix verify that LM2904PWRG3 is sourced from the original manufacturer or authorized distributors?
All LM2904PWRG3 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 LM2904PWRG3 meets industry standards.
7.What is the process for return or replacement of LM2904PWRG3?
All LM2904PWRG3 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904PWRG3, 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 LM2904PWRG3 part is unused and in its original packaging.
Return procedure for LM2904PWRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904PWRG3 Tags
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