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Texas Instruments LM2904BAIPWR
- Part No.:
- LM2904BAIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904BAIPWR.pdf
- Description:
- DUAL, 36-V, 1.2-MHZ, 2-MV OFFSET
- Quantity:
- Payment:
- Shipping:
Inventory:2,140
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Product details
Overview
LM2904BAIPWR from Texas Instruments is a dual general-purpose operational amplifier in TSSOP-8 package, designed for cost-sensitive industrial and automotive applications. It operates from 3V to 36V supply, delivers 1.2MHz unity-gain bandwidth, draws only 300µA per channel quiescent current, and features 2mV max input offset voltage at 25°C - enabling precision single-supply sensing near ground in motor control and power supply feedback loops.
For engineers reviewing the LM2904BAIPWR datasheet, LM2904BAIPWR pinout, LM2904BAIPWR application, or LM2904BAIPWR equivalent, this page provides verified electrical specs, validated pin functions, real-world use cases in HVAC and UPS systems, and two confirmed alternative parts with documented parameter and temperature-range differences.
Technical Context
The LM2904BAIPWR implements a bipolar-input, internally compensated two-stage op-amp architecture optimized for wide supply range (3–36V) and rail-to-rail input operation down to ground. Its common-mode input range includes V–, supporting direct low-side current sensing without level-shifting circuitry.
It integrates internal RF/EMI filtering and achieves 2kV HBM ESD robustness, making it suitable for electrically noisy environments such as motor drives and industrial inverters. The device is specified over –40°C to +125°C ambient, matching automotive under-hood and industrial control requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports single-supply operation in 5V, 12V, 24V, and 36V industrial systems without external regulators. |
| Input Offset Voltage (max) | 2mV at 25°C - enables accurate DC-coupled signal conditioning in sensor interfaces and closed-loop feedback paths. |
| Unity-Gain Bandwidth | 1.2MHz - sufficient for medium-speed signal amplification, active filtering, and error amplification in SMPS control loops. |
| Quiescent Current | 300µA per amplifier - reduces system power budget in always-on monitoring circuits and battery-backed subsystems. |
| Common-Mode Input Range | Includes ground (V–) - allows direct connection of low-side shunt resistors for current sensing without input biasing networks. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor HVAC equipment. |
| ESD Rating (HBM) | ±2000V - withstands handling and board-level transients in high-volume manufacturing and field-replaceable modules. |
Pinout & Package
TSSOP-8 (PW) package: 3mm × 6.4mm body, 0.65mm pitch, surface-mount, moisture-sensitive level 1 (MSL1), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output | Amplifier 1 output - drives feedback networks, ADC inputs, or low-power loads up to ±20mA sink/source. |
| 2 (IN1–) | Inverting Input | Differential input node for Amp1 - accepts feedback signals or inverted sensor inputs in standard configurations. |
| 3 (IN1+) | Non-inverting Input | Reference input for Amp1 - used for non-inverting gain stages or comparator reference thresholds. |
| 4 (V–) | Negative Supply / Ground | Lowest potential terminal - connects directly to system ground in single-supply operation or negative rail in split-supply designs. |
| 5 (IN2+) | Non-inverting Input | Reference input for Amp2 - independent of Amp1, enabling dual-channel signal processing or redundancy. |
| 6 (IN2–) | Inverting Input | Differential input node for Amp2 - supports separate feedback paths or differential-to-single-ended conversion. |
| 7 (OUT2) | Output | Amplifier 2 output - functionally identical to Pin 1, allowing independent second-stage gain or parallel drive capability. |
| 8 (V+) | Positive Supply | Highest potential terminal - supplies both amplifiers; decoupling capacitor required within 1cm for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground input common-mode range | Enables direct interfacing with low-side current-sense shunts and 0V-referenced sensors without external biasing. |
| 2mV max input offset voltage (25°C) | Reduces DC error in precision analog front-ends for HVAC temperature control and UPS battery monitoring. |
| Integrated RF and EMI filter | Suppresses high-frequency noise coupling in motor-drive PCBs and industrial power converters without external ferrites. |
| 1.2MHz gain-bandwidth product | Supports stable unity-gain configuration for buffer applications and 10kHz closed-loop bandwidth with 100x gain. |
| –40°C to +125°C operating range | Validated for automotive engine-control modules and industrial variable-frequency drives without derating. |
Applications
| Motor Control Feedback | Power Supply Error Amplifier |
|---|---|
Use Scenario: Monitoring phase current in brushed DC motor drivers using low-side shunt resistors. IC Role / Device Role / Timing Role: Dual op-amp configured as two independent current-sense amplifiers, one per phase. Use Value: Rail-to-ground input enables direct shunt connection; 2mV offset minimizes current measurement error at low load. | Use Scenario: Regulating output voltage in isolated flyback and forward converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Error amplifier comparing sensed output with reference and driving optocoupler LED. Use Value: 1.2MHz GBW ensures fast transient response; 300µA IQ reduces standby power in energy-efficient PSUs. |
| HVAC Indoor Unit Control | Uninterruptible Power Supply (UPS) |
Use Scenario: Conditioning thermistor and humidity sensor outputs in residential air conditioner indoor controllers. IC Role / Device Role / Timing Role: Signal conditioning stage before 12-bit ADC in microcontroller-based environmental monitoring. Use Value: –40°C to +125°C rating covers full HVAC operating envelope; integrated EMI filter rejects compressor switching noise. | Use Scenario: Battery voltage monitoring and charge/discharge current sensing in line-interactive UPS units. IC Role / Device Role / Timing Role: Dual-channel analog front-end: one amp for voltage scaling, one for bidirectional current sense. Use Value: Dual amplifiers reduce component count; 36V max supply accommodates 24V and 48V battery stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BIPWR | 3mV max input offset voltage (25°C); same 3–36V supply, 1.2MHz GBW, and –40°C to +125°C range. | Lower precision than LM2904BAIPWR in DC-critical applications like precision current sensing. | Select when offset tolerance >3mV is acceptable and cost optimization is prioritized over 2mV-grade accuracy. |
| LM358BAIPWR | Same 2mV max offset and 1.2MHz GBW, but rated only to +85°C ambient (vs. +125°C for LM2904BAIPWR). | Not suitable for under-hood automotive or high-temperature industrial enclosures exceeding 85°C. | Choose for commercial-grade applications (e.g., desktop PC power supplies) where extended temperature is unnecessary. |
Compared with LM2904BIPWR and LM358BAIPWR, the LM2904BAIPWR uniquely combines automotive-grade temperature range (–40°C to +125°C), 2mV precision offset, and integrated EMI filtering - making it the optimal choice for motor control and industrial UPS designs requiring both robustness and accuracy.
Availability
LM2904BAIPWR is available at Aetrix Electronics and suitable for motor control feedback, power supply error amplification, HVAC indoor unit control, and uninterruptible power supply (UPS) systems requiring stable component supply across automotive and industrial production cycles.
Supply support for LM2904BAIPWR 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 LM2904BA series belongs to TI's industry-standard dual op-amp product line, engineered specifically for rugged, cost-sensitive applications in automotive, industrial automation, and power electronics where reliability across extreme temperatures and electrical noise immunity are critical.
FAQ
What is the maximum supply voltage for LM2904BAIPWR?
The LM2904BAIPWR supports a maximum supply voltage of 36V across the V+ to V– terminals. This rating applies over its full operating temperature range (–40°C to +125°C) and enables use in 24V industrial systems and 36V battery-powered equipment without external regulation. Absolute maximum ratings must not be exceeded even momentarily during power-up or transient events.
Does LM2904BAIPWR support single-supply operation with input signals at ground?
Yes, the LM2904BAIPWR features a common-mode input voltage range that includes the negative supply rail (V–), which is typically grounded in single-supply configurations. This allows direct connection of low-side current-sense shunts and 0V-referenced sensors without external biasing networks - a key enabler for accurate DC-coupled measurements in motor control and power monitoring circuits using LM2904BAIPWR.
What is the input offset voltage specification for LM2904BAIPWR at elevated temperature?
The LM2904BAIPWR has a maximum input offset voltage of 3mV over its full operating ambient temperature range of –40°C to +125°C. At 25°C, the limit is tighter at 2mV. This guaranteed performance across temperature ensures consistent accuracy in automotive under-hood and industrial motor-drive applications where thermal drift could otherwise degrade closed-loop control stability using LM2904BAIPWR.
Can LM2904BAIPWR drive capacitive loads directly?
The LM2904BAIPWR is characterized to drive up to 100pF capacitive loads while maintaining stability. For larger loads (e.g., long cables or ADC input capacitance), external isolation resistance (typically 100Ω–500Ω) between the op-amp output and the load is recommended to prevent peaking or oscillation. This behavior is consistent across all operating conditions and is verified in TI's official characterization data for LM2904BAIPWR.
Is LM2904BAIPWR pin-compatible with older LM2904 variants?
Yes, the LM2904BAIPWR uses the industry-standard dual-op-amp pinout in TSSOP-8 (PW) package and is pin-compatible with LM2904, LM2904B, and LM2904V in the same package. No PCB layout changes are required when upgrading to LM2904BAIPWR, provided the design respects its improved specifications - particularly the lower offset voltage and extended temperature range - which enhance performance without altering physical connectivity.
LM2904BAIPWR 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:
- Push-Pull
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 2 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
LM2904BAIPWR FAQ
1.How can I place an order for LM2904BAIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904BAIPWR 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 LM2904BAIPWR reliable?
The price and inventory of LM2904BAIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904BAIPWR is usually 5 days.
3.What payment methods are accepted for LM2904BAIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904BAIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904BAIPWR?
LM2904BAIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904BAIPWR 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 LM2904BAIPWR?
For technical support, including LM2904BAIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904BAIPWR requirements.
6.How does Aetrix verify that LM2904BAIPWR is sourced from the original manufacturer or authorized distributors?
All LM2904BAIPWR 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 LM2904BAIPWR meets industry standards.
7.What is the process for return or replacement of LM2904BAIPWR?
All LM2904BAIPWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904BAIPWR, 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 LM2904BAIPWR part is unused and in its original packaging.
Return procedure for LM2904BAIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904BAIPWR Tags
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