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Texas Instruments LM2904AVQPWR
- Part No.:
- LM2904AVQPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904AVQPWR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,521
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Product details
Overview
LM2904AVQPWR from Texas Instruments is a dual general-purpose operational amplifier optimized for industrial and automotive applications, featuring 3V–30V supply range, 300µA/ch quiescent current, 1.2MHz unity-gain bandwidth, rail-to-rail input (including ground), and ±2mV max input offset voltage at 25°C. It serves as a precision signal conditioning and feedback amplifier in motor control, power supply monitoring, and sensor interface circuits.
For engineers reviewing the LM2904AVQPWR datasheet, LM2904AVQPWR pinout, LM2904AVQPWR application, or LM2904AVQPWR equivalent, this page delivers verified electrical specs, TSSOP-8 package details, thermal performance data, and validated alternative options - all aligned to TI's SLOS068AB revision October 2024 production datasheet.
Technical Context
The LM2904AVQPWR belongs to the LM2904BA variant family, distinguished by its extended −40°C to +125°C operating ambient temperature range and tighter ±2mV input offset voltage maximum at 25°C. Its internal EMI/RF filtering and high ESD robustness (2kV HBM) support reliable operation in electrically noisy environments such as motor drives and industrial inverters.
It employs a bipolar input stage with common-mode input voltage range extending to V−, enabling direct single-supply sensing near ground. The device achieves unity-gain stability without external compensation and supports capacitive loads up to 100pF while maintaining phase margin ≥56°.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 30V - supports wide-input industrial power rails and battery-backed systems without regulation overhead. |
| Input Offset Voltage (max, 25°C) | ±2 mV - enables accurate low-level signal amplification in current-sense and temperature-sensing front-ends. |
| Unity-Gain Bandwidth | 1.2 MHz - sufficient for closed-loop control loops in DC-DC converters and motor commutation timing. |
| Quiescent Current per Channel | 300 µA (typical) - allows dual-amplifier operation in always-on subsystems with sub-1mA total bias budget. |
| Common-Mode Input Range | Includes V− (ground) - eliminates need for level-shifting circuitry when interfacing with grounded sensors or shunt resistors. |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 3 immunity requirements for industrial equipment without added protection. |
| Operating Ambient Temperature | −40°C to +125°C - qualified for under-hood automotive, HVAC compressor controls, and outdoor power electronics. |
Pinout & Package
TSSOP-8 (PW) package: 3mm × 6.4mm body, 0.65mm pitch, surface-mount, moisture-sensitive level 1 (MSL-1), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output of Amplifier 1 | Capable of sourcing/sinking ±20 mA; output swing within 1.5V of V+ and 20mV of V− at TA = 125°C. |
| 2 (IN1−) | Inverting Input of Amplifier 1 | Differential input voltage range extends to ±32V; supports high-side current sensing with external gain resistors. |
| 3 (IN1+) | Non-inverting Input of Amplifier 1 | Common-mode range includes V−; enables direct connection to grounded thermistors or bridge sensors. |
| 4 (V−) | Negative Supply / Ground Reference | Serves as return path for both amplifiers; must be low-impedance to maintain PSRR >70dB. |
| 5 (IN2+) | Non-inverting Input of Amplifier 2 | Independent of Amp1; allows dual-channel signal conditioning (e.g., error amp + comparator reference buffer). |
| 6 (IN2−) | Inverting Input of Amplifier 2 | Matches IN1− characteristics; supports matched differential pair configurations in feedback networks. |
| 7 (OUT2) | Output of Amplifier 2 | Electrically isolated from OUT1; supports independent load driving up to 100pF capacitive load. |
| 8 (V+) | Positive Supply | Accepts up to 30V; internal regulation ensures stable biasing across full temperature and supply range. |
Key Features
| Feature | Design Value |
|---|---|
| Internal RF and EMI filter | Reduces susceptibility to conducted noise in motor drive gate driver feedback paths and SMPS voltage loops. |
| Rail-to-rail input (V− inclusive) | Enables single-supply operation with grounded sensors - eliminates need for negative supply or biasing resistors. |
| Low input offset drift (±3.5 µV/°C) | Maintains accuracy over full −40°C to +125°C range - critical for temperature-compensated analog front-ends. |
| High open-loop gain (70 V/mV min) | Ensures <0.01% gain error in unity-gain buffers and <0.1% error in 10× inverting configurations at DC. |
| 100pF capacitive load drive | Allows direct connection to ADC input filters or long PCB traces without external isolation resistors. |
Applications
| Motor Control Feedback | Industrial Power Supply Monitoring |
|---|---|
|
Use Scenario: Closed-loop speed regulation of brushed DC motors using back-EMF sensing and PWM-driven H-bridge. IC Role / Device Role / Timing Role: Dual op-amp configures as error amplifier (Amp1) and current-sense amplifier (Amp2) in analog feedback path. Use Value: ±2mV offset ensures <1% speed error at light load; rail-to-rail input enables direct shunt voltage capture at 0V common-mode. |
Use Scenario: Real-time monitoring of +12V and +5V rails in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Configured as dual comparator-like threshold detector with hysteresis via external resistors. Use Value: 1.2MHz GBW supports fast response to transient overvoltage events; 2kV HBM withstands field-induced surges. |
| Automotive HVAC Blower Control | AC Inverter Voltage Sensing |
|
Use Scenario: Analog interface between NTC thermistor and MCU ADC for cabin temperature feedback in blower motor control. IC Role / Device Role / Timing Role: Non-inverting amplifier with gain = 10, referenced to chassis ground. Use Value: −40°C to +125°C rating matches under-dash environment; 300µA/ch current enables always-on thermal monitoring. |
Use Scenario: Scaling and buffering of DC-link voltage (up to 400V) for isolation amplifier input in solar string inverters. IC Role / Device Role / Timing Role: High-impedance voltage divider buffer with common-mode rejection >70dB. Use Value: CMRR ≥25 µV/V (70dB+) rejects switching noise from IGBT gate drivers; 30V abs max rating suits 25V auxiliary supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2904BQPWR | ±3mV max input offset (vs. ±2mV), otherwise identical specs and pinout. | Acceptable where <0.5% gain error at room temperature is tolerable (e.g., non-critical power sequencing). | Select LM2904BQPWR for cost-sensitive designs where offset-critical precision is not required. |
| LM358BAQPWR | Same ±2mV offset and 1.2MHz GBW, but rated only to +85°C ambient (vs. +125°C). | Not suitable for under-hood or high-temp industrial enclosures; limited to indoor consumer/office equipment. | Choose LM358BAQPWR only if system ambient stays ≤85°C and footprint compatibility is prioritized. |
Compared with LM2904AVQPWR, LM2904BQPWR trades 1mV offset tolerance for broader availability and lower unit cost, while LM358BAQPWR sacrifices high-temperature capability to match legacy LM358 board layouts - neither offers drop-in replacement without thermal or precision validation.
Availability
LM2904AVQPWR is available at Aetrix Electronics and suitable for motor control, industrial power supply monitoring, and automotive HVAC blower control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2904AVQPWR 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 delivering analog, embedded processing, and connectivity solutions with deep expertise in precision analog design and automotive qualification.
The LM2904x series targets cost-sensitive, high-reliability industrial and automotive signal-conditioning applications - designed for robustness in harsh environments with guaranteed −40°C to +125°C operation and integrated EMI resilience.
FAQ
What is the maximum supply voltage for LM2904AVQPWR?
The absolute maximum supply voltage (V+ to V−) for LM2904AVQPWR is 40V, but the recommended operating range is 3V to 30V per the datasheet's Section 5.3. Operating above 30V risks exceeding safe junction temperature limits under load and may degrade long-term reliability - LM2904AVQPWR is not characterized beyond 30V for parametric guarantees.
Does LM2904AVQPWR support rail-to-rail output swing?
No, LM2904AVQPWR does not provide rail-to-rail output. Its output swings within 1.5V of V+ and as low as 20mV above V− at TA = 125°C with 5mA load. At room temperature and light load (50µA), it achieves 1.35V below V+ and 100mV above V−. Full rail-to-rail output requires dedicated RRIO op-amps like TLV2462.
Is LM2904AVQPWR pin-compatible with standard LM2904 variants?
Yes, LM2904AVQPWR uses the industry-standard TSSOP-8 (PW) package with identical pinout to LM2904QPWR, LM2904BQPWR, and LM2904BAQPWR. All share Pin 1 = OUT1, Pin 2 = IN1−, Pin 3 = IN1+, Pin 4 = V−, Pin 5 = IN2+, Pin 6 = IN2−, Pin 7 = OUT2, Pin 8 = V+, confirmed in TI's SLOS068AB Figure 4-1.
What is the thermal resistance (RθJA) of LM2904AVQPWR in TSSOP-8 package?
The junction-to-ambient thermal resistance (RθJA) for LM2904AVQPWR in PW (TSSOP-8) package is 171.7°C/W, per TI's SLOS068AB Section 5.4. This value assumes JEDEC-standard 2S2P test board; actual board layout, copper area, and airflow will affect real-world thermal performance - derating is required above 85°C ambient.
Can LM2904AVQPWR drive a 10kΩ load at 12V supply while maintaining linearity?
Yes, LM2904AVQPWR maintains linearity driving 10kΩ loads at 12V supply: open-loop gain is ≥70 V/mV (136dB), ensuring <0.01% gain error in unity-gain configuration. Output swing reaches ≥10.5V (V+ −1.5V) and ≥0.02V (V− +20mV) under 1mA load, satisfying most 12V-system analog interface requirements.
LM2904AVQPWR 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:
- 1 mV
- Current - Supply:
- 500µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
LM2904AVQPWR FAQ
1.How can I place an order for LM2904AVQPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904AVQPWR 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 LM2904AVQPWR reliable?
The price and inventory of LM2904AVQPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904AVQPWR is usually 5 days.
3.What payment methods are accepted for LM2904AVQPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904AVQPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904AVQPWR?
LM2904AVQPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904AVQPWR 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 LM2904AVQPWR?
For technical support, including LM2904AVQPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904AVQPWR requirements.
6.How does Aetrix verify that LM2904AVQPWR is sourced from the original manufacturer or authorized distributors?
All LM2904AVQPWR 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 LM2904AVQPWR meets industry standards.
7.What is the process for return or replacement of LM2904AVQPWR?
All LM2904AVQPWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904AVQPWR, 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 LM2904AVQPWR part is unused and in its original packaging.
Return procedure for LM2904AVQPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2904AVQPWR Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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