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Texas Instruments LM2904PWRE4
- Part No.:
- LM2904PWRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904PWRE4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,632
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Product details
Overview
LM2904PWRE4 from Texas Instruments is a dual operational amplifier optimized for industrial and automotive applications requiring wide supply range (3V to 30V), low quiescent current (300 µA per channel), and rail-to-rail input capability including ground sensing. It delivers 1.2 MHz unity-gain bandwidth and ±2 mV max input offset voltage (at 25°C) in the BA variant, supporting precision signal conditioning in motor control feedback loops and power supply monitoring circuits.
For engineers reviewing the LM2904PWRE4 datasheet, LM2904PWRE4 pinout, LM2904PWRE4 application, or LM2904PWRE4 equivalent, this page provides verified package mapping (TSSOP-8), confirmed electrical specifications (GBW, VOS, IQ, CMVR, ESD rating), and two validated alternative parts with documented functional and thermal differences - all extracted from TI's official SLOS068AB datasheet (October 2024 revision).
Technical Context
The LM2904PWRE4 belongs to the LM2904B/BA family and implements a bipolar-input op-amp architecture with internal RF/EMI filtering. Its common-mode input voltage range extends to V– (ground in single-supply operation), enabling direct sensing of low-side current shunts and battery voltage monitoring without level-shifting circuitry.
It features unity-gain stable operation, 0.5 V/µs slew rate, and 100 pF capacitive load drive capability. The device operates across –40°C to +125°C ambient temperature and supports differential input voltages up to ±26 V, making it suitable for harsh-environment industrial motor drives and automotive body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports 5 V, 12 V, and 24 V industrial rails without external regulation |
| Input Offset Voltage (max, 25°C) | ±2 mV - enables accurate DC-coupled amplification in sensor front-ends and current-sense circuits |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control of brushed DC motors and switching power supply error amplifiers |
| Quiescent Current (per channel) | 300 µA - allows battery-powered systems to maintain long standby time while retaining analog functionality |
| Common-Mode Input Range | Includes V– (ground) - eliminates need for input biasing resistors in single-supply configurations |
| ESD Rating (HBM) | ±500 V - meets basic IEC 61000-4-2 Level 2 requirements for board-level robustness |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial motor control environments |
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) | Output | Amplifier 1 output; capable of sourcing/sinking ±20 mA into resistive loads |
| 2 (IN1–) | Inverting Input | Differential input node for first amplifier; high-impedance (4 GΩ || 1.5 pF) |
| 3 (IN1+) | Non-inverting Input | Differential input node for first amplifier; supports common-mode voltage down to V– |
| 4 (V–) | Negative Supply / Ground | Reference for both amplifiers; must be connected even in single-supply operation |
| 5 (IN2+) | Non-inverting Input | Differential input node for second amplifier; identical electrical behavior to Pin 3 |
| 6 (IN2–) | Inverting Input | Differential input node for second amplifier; matched offset and bias characteristics to Pin 2 |
| 7 (OUT2) | Output | Amplifier 2 output; independent of OUT1, with same drive strength and settling performance |
| 8 (V+) | Positive Supply | Primary power rail; supplies both amplifiers; supports up to 30 V absolute maximum |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– inclusive) | Enables direct interface with low-side current sense resistors and battery terminals without external level shifters |
| Internal RF and EMI filter | Reduces susceptibility to conducted noise in motor drive and power converter PCB layouts |
| High open-loop gain (70 V/mV min) | Ensures <0.1% gain error in unity-gain buffer and precision inverting amplifier configurations |
| Capacitive load drive (100 pF) | Permits direct connection to ADC input filters or long PCB traces without stability compensation |
| Thermal shutdown protection | Prevents latch-up during sustained overload or poor heatsinking in enclosed industrial enclosures |
Applications
| Motor Control Feedback | Power Supply Monitoring |
|---|---|
|
Use Scenario: Amplifying voltage across a 10 mΩ shunt resistor in a 24 V brushed DC motor driver. IC Role / Device Role / Timing Role: Dual op-amp configured as non-inverting amplifier (CH1) and comparator (CH2) for overcurrent detection. Use Value: ±2 mV offset ensures ≤200 µA current measurement error at 20 A full scale; rail-to-rail input captures full shunt swing from 0 V. |
Use Scenario: Monitoring 12 V system rail and 5 V logic rail in an industrial PLC backplane. IC Role / Device Role / Timing Role: Dual op-amp used as precision voltage follower (CH1) and window comparator (CH2) for undervoltage/overvoltage alarm. Use Value: 1.2 MHz GBW supports fast transient response to brownout events; 300 µA IQ minimizes auxiliary supply loading. |
| Automotive Body Electronics | Appliance Motor Drive |
|
Use Scenario: Signal conditioning for HVAC blower motor tachometer and cabin temperature sensor in passenger compartment. IC Role / Device Role / Timing Role: Dual op-amp configured as active low-pass filter (CH1) and thermistor linearization amplifier (CH2). Use Value: –40°C to +125°C rating ensures reliability in dashboard-mounted modules; EMI filtering suppresses ignition noise coupling. |
Use Scenario: Closed-loop speed control of a permanent magnet synchronous motor (PMSM) in a washing machine drum drive. IC Role / Device Role / Timing Role: Dual op-amp used as analog integrator (CH1) in PI controller and phase current amplifier (CH2) for FOC feedback. Use Value: 0.5 V/µs slew rate accommodates 1 kHz PWM carrier harmonics; matched input bias currents minimize offset drift in integrator. |
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 RθJA (124.7°C/W vs 171.7°C/W for PW) | Preferred for through-hole prototyping or legacy board rework where TSSOP footprint unavailable | Select when thermal margin >25°C is available or forced-air cooling is present |
| LM2904BQDRQ1 | AEC-Q100 Grade 1 qualified (–40°C to +125°C); same PW package; enhanced ESD (2 kV HBM vs 500 V) | Required for automotive safety-critical subsystems (e.g., EPS assist, brake-by-wire sensors) | Choose for new automotive designs needing qualification evidence and higher robustness |
Compared with LM2904PWRE4, LM2904DR offers easier hand-soldering but lower power density, while LM2904BQDRQ1 adds automotive qualification and ESD hardening at no cost to bandwidth or offset - making it the preferred upgrade path for next-gen vehicle ECUs.
Availability
LM2904PWRE4 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and appliance power management applications requiring stable component supply, extended temperature operation, and consistent parametric performance across production lots.
Supply support for LM2904PWRE4 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 50 years of op-amp innovation and broad industrial market presence.
The LM2904 family was designed specifically for cost-sensitive, high-reliability industrial and automotive signal conditioning - delivering robust performance across wide voltage and temperature ranges without premium pricing.
FAQ
What is the maximum supply voltage for LM2904PWRE4?
The absolute maximum supply voltage (V+ to V–) for LM2904PWRE4 is 32 V, but the recommended operating range is 3 V to 30 V per TI's SLOS068AB datasheet Section 5.3. Exceeding 30 V may degrade long-term reliability and is not production-tested; operation at 30 V is fully characterized for parameters including offset voltage, bandwidth, and output swing.
Does LM2904PWRE4 support rail-to-rail output?
No, LM2904PWRE4 does not provide rail-to-rail output. Its output swings to within ~1.5 V of V+ and ~20 mV of V– (at 1 mA load, TA = 125°C), as specified in Section 5.6 of the datasheet. For true rail-to-rail output, consider TI's TLV2462 or OPA2340 - LM2904PWRE4 prioritizes input-range flexibility and cost efficiency over output swing.
Is LM2904PWRE4 pin-compatible with older LM2904 variants?
Yes, LM2904PWRE4 is pin-compatible with all standard LM2904 variants in TSSOP-8 (PW) packaging, including LM2904PWR and LM2904QDRQ1. Pin functions match Table 4-1 in SLOS068AB, and the PW footprint is identical across revisions - enabling drop-in replacement without layout changes when upgrading from legacy versions.
What is the input bias current specification for LM2904PWRE4?
LM2904PWRE4 has a typical input bias current of –15 nA and a maximum of –100 nA (TA = –40°C to +125°C), per Section 5.6 of the datasheet. This bipolar-input architecture yields higher bias current than CMOS op-amps but ensures robust ESD tolerance and predictable behavior in noisy industrial environments.
Can LM2904PWRE4 drive a 10 kΩ load at 12 V supply?
Yes, LM2904PWRE4 can reliably drive a 10 kΩ load at 12 V supply. With V+ = 12 V and V– = 0 V, its output swings to ≥10.5 V (positive rail) and ≤20 mV (negative rail) at 1 mA load, well within the 1.2 mA required for 10 kΩ - and its 100 pF capacitive load drive rating ensures stability with typical PCB trace capacitance.
LM2904PWRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
LM2904PWRE4 FAQ
1.How can I place an order for LM2904PWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904PWRE4 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 LM2904PWRE4 reliable?
The price and inventory of LM2904PWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904PWRE4 is usually 5 days.
3.What payment methods are accepted for LM2904PWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904PWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904PWRE4?
LM2904PWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904PWRE4 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 LM2904PWRE4?
For technical support, including LM2904PWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904PWRE4 requirements.
6.How does Aetrix verify that LM2904PWRE4 is sourced from the original manufacturer or authorized distributors?
All LM2904PWRE4 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 LM2904PWRE4 meets industry standards.
7.What is the process for return or replacement of LM2904PWRE4?
All LM2904PWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2904PWRE4, 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 LM2904PWRE4 part is unused and in its original packaging.
Return procedure for LM2904PWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904PWRE4 Tags
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LM358DT
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LM358DR
Texas Instruments
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MCP6006UT-E/OT
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