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Texas Instruments LM2904PWRG4
- Part No.:
- LM2904PWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904PWRG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,325
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Product details
Overview
LM2904PWRG4 from Texas Instruments is a dual operational amplifier optimized for industrial and automotive applications requiring wide supply range, rail-to-rail input capability, and robust EMI immunity. It operates from 3V to 36V, delivers 1.2MHz unity-gain bandwidth, draws only 300µA per channel, and features 2mV max input offset voltage (BA version) with common-mode input range extending to ground - enabling direct low-side current sensing in motor control and power supply feedback loops.
For engineers reviewing the LM2904PWRG4 datasheet, LM2904PWRG4 pinout, LM2904PWRG4 application, or LM2904PWRG4 equivalent, this page provides verified package mapping (TSSOP-8), confirmed electrical specifications (including quiescent current, GBW, offset voltage, ESD rating, and output swing), and real-world implementation context for power management, sensor conditioning, and industrial analog signal chains.
Technical Context
The LM2904PWRG4 belongs to the LM2904B/BA family - a next-generation revision of the industry-standard LM2904 - featuring enhanced unity-gain stability, integrated RF/EMI filtering, and extended temperature operation up to +125°C. Its input stage supports common-mode voltages down to V–, eliminating level-shifting requirements in single-supply configurations.
Internally, it uses a bipolar input stage with differential pair topology, delivering high open-loop gain (70–140 V/mV), low input bias current (≤35 nA), and 0.5 V/µs slew rate. The device is specified for operation across –40°C to +125°C ambient, with absolute maximum supply voltage of ±20 V or 40 V (V+ to V–).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V - supports wide-input industrial power rails and battery-backed systems without external regulation. |
| Unity-Gain Bandwidth | 1.2 MHz - enables stable closed-loop operation at gains ≥1 with minimal phase margin degradation (56°). |
| Input Offset Voltage (max, 25°C) | 2 mV (BA version) - ensures ≤2 mV DC error in precision DC-coupled amplification (e.g., current shunt monitoring). |
| Quiescent Current per Channel | 300 µA (typical at 5 V) - allows low-power operation in always-on subsystems like HVAC sensor interfaces. |
| Common-Mode Input Range | Includes V– (ground) - permits direct sensing of signals referenced to system ground, e.g., shunt-based current measurement. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for robustness in electrically noisy industrial environments. |
| Output Voltage Swing (V–) | 5–20 mV above V– at TA = –40°C to +125°C - supports near-ground output drive in single-supply configurations. |
Pinout & Package
TSSOP-8 (PW) package: 3 mm × 6.4 mm body, 0.65 mm pitch, surface-mount, moisture-sensitive level 1 (MSL-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Amplifier 1 output | Drives feedback network or load; capable of sourcing/sinking ±20 mA (typical) into resistive loads. |
| 2 (IN1–) | Inverting input of Amp 1 | Accepts feedback signal or inverted input path; high common-mode rejection (≥100 dB) minimizes error from supply noise. |
| 3 (IN1+) | Non-inverting input of Amp 1 | Receives reference or sensor signal; input impedance >4 GΩ enables high-Z source interfacing without loading. |
| 4 (V–) | Negative supply / ground reference | Serves as return path for both amplifiers; common-mode range extends to this pin, enabling true single-supply operation. |
| 5 (IN2+) | Non-inverting input of Amp 2 | Independent second channel input; identical specs to Amp 1 - supports dual-sensor or dual-loop applications. |
| 6 (IN2–) | Inverting input of Amp 2 | Supports independent feedback configuration; channel separation >120 dB prevents crosstalk in multi-channel designs. |
| 7 (OUT2) | Amplifier 2 output | Functionally identical to OUT1; enables dual op-amp functions (e.g., error amp + comparator buffer) on one die. |
| 8 (V+) | Positive supply | Accepts up to 36 V; internal protection limits damage from transient overvoltage during hot-swap or load-dump events. |
Key Features
| Feature | Design Value |
|---|---|
| Internal RF and EMI filter | Reduces susceptibility to radiated emissions in motor drives and switching power supplies, eliminating need for external ferrite beads. |
| Common-mode input range includes ground | Enables direct interface with low-side current shunts and grounded sensors without level-shifting circuitry. |
| Unity-gain stable | Guarantees stable operation with no external compensation required - simplifies design of buffers, followers, and active filters. |
| High ESD rating (2 kV HBM) | Withstands electrostatic discharge during board handling and field deployment in uncontrolled environments (e.g., factory automation). |
| Extended temperature range (–40°C to +125°C) | Validated for under-hood automotive and industrial control cabinet use without derating or thermal management overhead. |
Applications
| Motor Control Feedback | Power Supply Monitoring |
|---|---|
|
Use Scenario: Closed-loop speed/torque regulation in brushed DC and BLDC motor drivers using low-side shunt current sensing. IC Role / Device Role / Timing Role: Dual op-amp configures as current-sense amplifier (Amp 1) and voltage-error amplifier (Amp 2) in PWM feedback path. Use Value: Ground-referenced input enables accurate <1% current measurement at 0 V common-mode; 300 µA quiescent current reduces idle power in fan controllers. |
Use Scenario: Real-time monitoring of +12 V and +5 V rails in server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: Amplifies scaled-down rail voltages for ADC input or comparator threshold comparison. Use Value: 36 V max supply allows direct connection to unregulated intermediate bus; 1.2 MHz GBW supports fast transient response detection. |
| Industrial Sensor Interface | AC Inverter Signal Conditioning |
|
Use Scenario: Signal conditioning for RTD, thermistor, and bridge-based pressure sensors in HVAC and PLC modules. IC Role / Device Role / Timing Role: Configured as programmable-gain amplifier (PGA) and offset-nulling stage before SAR ADC. Use Value: 2 mV max offset ensures <0.1°C error in 100 Ω Pt100 circuits; TSSOP-8 footprint saves PCB area in space-constrained DIN-rail mounts. |
Use Scenario: Isolation-amplifier front-end buffering and fault-detection comparator input conditioning in solar string inverters. IC Role / Device Role / Timing Role: Buffers isolated current transformer outputs and conditions overcurrent trip signals for microcontroller GPIO. Use Value: ±2000 V HBM ESD rating withstands gate-drive noise coupling; rail-to-rail input captures full CT secondary swing without clipping. |
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 (4.9 mm × 6 mm); same electrical specs but higher thermal resistance (RθJA = 124.7°C/W vs. 171.7°C/W for TSSOP). | Better suited for prototyping and through-hole-compatible boards; less optimal for high-density industrial PCBs. | Select when manual soldering, legacy layout compatibility, or higher power dissipation margin is required. |
| LM2904BQDRQ1 | AEC-Q100 qualified (Grade 1, –40°C to +125°C); identical AC/DC specs but certified for automotive powertrain and chassis systems. | Required for ASIL-B functional safety paths; not necessary for non-automotive industrial use. | Choose only if automotive qualification, traceability, or PPAP documentation is mandated by end-customer requirements. |
Compared with LM2904DR and LM2904BQDRQ1, the LM2904PWRG4 offers the smallest footprint (TSSOP-8), best thermal performance for high-density layouts, and full industrial temperature compliance - making it optimal for cost-sensitive, space-constrained embedded control applications where automotive certification is unnecessary.
Availability
LM2904PWRG4 is available at Aetrix Electronics and suitable for motor control feedback, power supply monitoring, and industrial sensor interface applications requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.
Supply support for LM2904PWRG4 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 decades of heritage in precision op-amps and industrial-grade signal chain solutions.
The LM2904 family was designed specifically for cost-sensitive, high-reliability industrial and automotive analog signal conditioning - prioritizing wide supply range, ground-sensing capability, and ruggedized packaging over ultra-low-noise or high-speed performance.
FAQ
What is the maximum supply voltage for LM2904PWRG4?
The LM2904PWRG4 supports a maximum supply voltage of 36 V between V+ and V– terminals, with absolute maximum ratings specifying ±20 V or 40 V (V+ to V–). Operation beyond 36 V risks permanent damage, and all electrical characteristics are guaranteed only within the 3 V to 36 V recommended range per the official TI datasheet SLOS068AB.
Does LM2904PWRG4 support rail-to-rail input?
Yes, the LM2904PWRG4 features a common-mode input voltage range that includes the negative supply rail (V–), allowing inputs to operate down to ground in single-supply configurations. However, it does not support rail-to-rail output swing - its output can swing within ~1.5 V of V+ and as low as 5 mV above V– under specified load and temperature conditions.
Is LM2904PWRG4 pin-compatible with older LM2904 variants?
Yes, the LM2904PWRG4 uses the standard 8-pin TSSOP (PW) footprint and identical pinout as other LM2904-family devices in the same package - including IN1+, IN1–, OUT1, V–, IN2+, IN2–, OUT2, and V+. This ensures drop-in replacement capability in existing TSSOP-8 layouts without PCB modification.
What is the input offset voltage specification for LM2904PWRG4?
The LM2904PWRG4 is part of the LM2904BA variant family and is specified with a maximum input offset voltage of ±2.0 mV at 25°C and ±3.0 mV over the full operating temperature range (–40°C to +125°C), as confirmed in Section 5.6 of the TI datasheet SLOS068AB.
Can LM2904PWRG4 drive capacitive loads?
Yes, the LM2904PWRG4 is characterized to safely drive up to 100 pF of capacitive load without oscillation, as stated in its Electrical Characteristics table. For loads exceeding 100 pF, external series resistance (e.g., 10–100 Ω) at the output is recommended to maintain phase margin and prevent instability in closed-loop configurations.
LM2904PWRG4 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
LM2904PWRG4 FAQ
1.How can I place an order for LM2904PWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904PWRG4 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 LM2904PWRG4 reliable?
The price and inventory of LM2904PWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904PWRG4 is usually 5 days.
3.What payment methods are accepted for LM2904PWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904PWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904PWRG4?
LM2904PWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904PWRG4 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 LM2904PWRG4?
For technical support, including LM2904PWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904PWRG4 requirements.
6.How does Aetrix verify that LM2904PWRG4 is sourced from the original manufacturer or authorized distributors?
All LM2904PWRG4 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 LM2904PWRG4 meets industry standards.
7.What is the process for return or replacement of LM2904PWRG4?
All LM2904PWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904PWRG4, 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 LM2904PWRG4 part is unused and in its original packaging.
Return procedure for LM2904PWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904PWRG4 Tags
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