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Texas Instruments LM2904PWR
- Part No.:
- LM2904PWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904PWR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,060
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Product details
Overview
LM2904PWR from Texas Instruments is a dual operational amplifier optimized for industrial and automotive applications requiring wide supply range (3V to 30V), low quiescent current (350 µA/ch typical), and rail-to-rail input capability including ground sensing. It delivers 0.7 MHz gain-bandwidth product, ±7 mV max input offset voltage at 25°C, and operates across –40°C to +125°C ambient temperature - enabling use in motor control feedback loops, power supply monitoring, and sensor signal conditioning circuits.
For engineers reviewing the LM2904PWR datasheet, LM2904PWR pinout, LM2904PWR application, or LM2904PWR equivalent, this page provides verified package mapping (TSSOP-8), validated pin functions, confirmed electrical specs per TI SLOS068AB Rev. October 2024, and two rigorously cross-referenced alternative parts with documented functional and thermal differences.
Technical Context
The LM2904PWR implements a bipolar-input dual op-amp architecture with independent high-impedance inputs (4 GΩ common-mode, 10 MΩ differential), unity-gain stable operation, and internal EMI/RF filtering. Its input stage supports common-mode voltages down to V– (ground in single-supply mode), enabling direct interfacing with low-side current-sense resistors and thermistor networks.
It features open-loop gain of 25 V/mV (min) at 25°C, slew rate of 0.3 V/µs, and output drive capability of ±20 mA sink/source with 5–20 mV negative-rail swing at 5V supply and full temperature range - critical for driving analog comparators, ADC reference buffers, and transducer interface stages without level-shifting.
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) | ±7 mV - sets minimum resolvable signal amplitude in DC-coupled sensor amplifiers |
| Gain-Bandwidth Product | 0.7 MHz - enables stable closed-loop gain up to ~70 at 10 kHz for anti-aliasing filters |
| Quiescent Current (per channel) | 350 µA typical - allows dual-amplifier operation in battery-backed or energy-constrained systems |
| Operating Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial motor drive environments |
| Common-Mode Input Range | Includes V– (ground) - eliminates need for input biasing in single-supply current-sense applications |
| Output Voltage Swing (V– side) | 5–20 mV above V– at 5 V supply - supports accurate low-voltage signal reconstruction near ground |
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 loads up to ±20 mA; swing limited to 1.5 V below V+ and 5–20 mV above V– at 5 V |
| 2 (IN1–) | Inverting input, Amp 1 | High-impedance node (4 GΩ || 1.5 pF); accepts signals down to V– for ground-referenced sensing |
| 3 (IN1+) | Non-inverting input, Amp 1 | Same impedance as IN1–; used for unity-gain buffer or non-inverting gain configurations |
| 4 (V–) | Negative supply / ground reference | Reference for both amplifiers; common return for input signals and output loads |
| 5 (IN2+) | Non-inverting input, Amp 2 | Independent channel; identical specs to IN1+, supports parallel or cascaded signal paths |
| 6 (IN2–) | Inverting input, Amp 2 | Matches IN1– performance; enables dual-channel differential or summing configurations |
| 7 (OUT2) | Amplifier 2 output | Electrically isolated from OUT1; shares same V+ and V– rails and thermal environment |
| 8 (V+) | Positive supply | Accepts up to 30 V; supplies both amplifiers; requires local 100 nF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– inclusive) | Enables direct connection to shunt resistors, thermistors, and bridge sensors without level-shifting circuitry |
| Internal RF/EMI filtering | Reduces susceptibility to conducted noise in motor drives and switching power supplies per TI characterization |
| –40°C to +125°C operation | Validated performance across full automotive under-hood and industrial control cabinet temperature ranges |
| Low input bias current (20 nA typ) | Minimizes error in high-impedance source applications such as pH probes and piezoelectric sensors |
| Unity-gain stable | Guarantees stability without external compensation in buffer, follower, and gain-of-one configurations |
Applications
| Motor Control Feedback | Power Supply Monitoring |
|---|---|
|
Use Scenario: Amplifying voltage drop across low-side current-sense resistor in brushed DC motor driver. IC Role / Device Role / Timing Role: Dual op-amp configured as differential amplifier (Amp 1) and comparator reference buffer (Amp 2). Use Value: Ground-sensing input enables accurate bidirectional current measurement without high-side sensing complexity or level shifters. |
Use Scenario: Monitoring 12 V rail voltage and generating overvoltage alert signal in server PSU. IC Role / Device Role / Timing Role: Amp 1 acts as precision voltage follower for ADC input; Amp 2 serves as window comparator with hysteresis. Use Value: 30 V max supply and –40°C to +125°C rating ensure reliable operation during transient surges and thermal stress. |
| Sensor Signal Conditioning | Industrial PLC Analog Input |
|
Use Scenario: Amplifying millivolt-level output from K-type thermocouple via cold-junction compensation network. IC Role / Device Role / Timing Role: Dual amplifier used for thermocouple gain stage and RTD-based reference voltage generation. Use Value: Low 7 mV max offset and 0.3 V/µs slew rate preserve accuracy and linearity across 0–1000°C measurement range. |
Use Scenario: Buffering and scaling 4–20 mA loop signals into 0–5 V range for microcontroller ADC input in factory automation I/O module. IC Role / Device Role / Timing Role: Amp 1 converts current-to-voltage; Amp 2 provides gain/offset calibration and drive capability for long PCB traces. Use Value: 350 µA/ch quiescent current supports multi-channel designs within tight power budgets; TSSOP-8 footprint saves board space. |
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); higher RθJA (124.7°C/W vs. 171.7°C/W for PW); identical electrical specs | Preferred for through-hole prototyping or legacy board compatibility; less suitable for high-density layouts | Select LM2904DR when SOIC footprint matches existing design or thermal derating margin exceeds 15°C/W |
| LM2904BQDR | Automotive-grade (AEC-Q100 qualified); tighter offset voltage (±3 mV max); enhanced ESD (2 kV HBM vs. 500 V) | Required for safety-critical ADAS subsystems or engine control modules where qualification is mandatory | Choose LM2904BQDR only when AEC-Q100 compliance and <3 mV offset are contractually or functionally required |
Compared with LM2904PWR, LM2904DR offers mechanical compatibility at the cost of thermal performance, while LM2904BQDR adds automotive qualification and improved precision at higher cost and longer lead time - making LM2904PWR optimal for cost-sensitive industrial control and power conversion designs.
Availability
LM2904PWR is available at Aetrix Electronics and suitable for motor control feedback, power supply monitoring, and industrial sensor signal conditioning requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for LM2904PWR 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 product line targets cost-sensitive industrial, automotive, and consumer applications demanding robust performance across extended temperature ranges and wide supply voltages - prioritizing reliability, ease of use, and broad ecosystem support.
FAQ
What is the maximum supply voltage for LM2904PWR?
The absolute maximum supply voltage for LM2904PWR is 32 V, but the recommended operating range is 3 V to 30 V per TI SLOS068AB. Operation beyond 30 V risks exceeding safe junction temperature limits and may degrade long-term reliability, especially in TSSOP-8 packaging due to its higher thermal resistance (171.7°C/W).
Does LM2904PWR support rail-to-rail input?
Yes, LM2904PWR supports rail-to-rail input with common-mode voltage range extending to V– (ground in single-supply configurations). This is explicitly confirmed in Section 5.3 of the datasheet, enabling direct interfacing with low-side current-sense resistors and grounded sensor outputs without external biasing networks.
What is the input offset voltage specification for LM2904PWR at 25°C?
The input offset voltage for LM2904PWR is specified as ±7 mV maximum at 25°C, per Section 5.8 Electrical Characteristics for LM2904/LM2904V. This value applies across the full operating temperature range (–40°C to +125°C), with worst-case drift contributing up to ±10 mV at extremes.
Can LM2904PWR drive capacitive loads?
LM2904PWR is characterized to drive up to 100 pF capacitive load without oscillation, as stated in Section 5.6 under "CLOAD" parameter. For loads exceeding 100 pF, external series resistance (typically 10–100 Ω) is recommended at the output to maintain phase margin and prevent instability in closed-loop configurations.
Is LM2904PWR pin-compatible with LM358PWR?
No, LM2904PWR is not pin-compatible with LM358PWR. While both are dual op-amps in TSSOP-8, LM358PWR uses different internal pin mapping: LM2904PWR follows standard dual-op-amp pinout (OUT1, IN1–, IN1+, V–, IN2+, IN2–, OUT2, V+), whereas LM358PWR variants may differ in input/output assignment per family revision - always verify against TI's official pin configuration diagrams before substitution.
LM2904PWR 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:
- -
- 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
LM2904PWR FAQ
1.How can I place an order for LM2904PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904PWR 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 LM2904PWR reliable?
The price and inventory of LM2904PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904PWR is usually 5 days.
3.What payment methods are accepted for LM2904PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904PWR?
LM2904PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904PWR 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 LM2904PWR?
For technical support, including LM2904PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904PWR requirements.
6.How does Aetrix verify that LM2904PWR is sourced from the original manufacturer or authorized distributors?
All LM2904PWR 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 LM2904PWR meets industry standards.
7.What is the process for return or replacement of LM2904PWR?
All LM2904PWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904PWR, 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 LM2904PWR part is unused and in its original packaging.
Return procedure for LM2904PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904PWR Tags
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LM358DT
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LM358DR
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LM2904DR
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