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Texas Instruments LM2904LVIPWR
- Part No.:
- LM2904LVIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2904LVIPWR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,408
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Product details
Overview
LM2904LVIPWR from Texas Instruments is a dual, low-voltage, rail-to-rail input operational amplifier designed for cost-sensitive industrial and consumer systems operating from 2.7 V to 5.5 V supply. It delivers ±1 mV input offset voltage, 1 MHz unity-gain bandwidth, 40 nV/√Hz input voltage noise density, 90 µA per-channel quiescent current, and operates across –40°C to 125°C - enabling precision signal conditioning in battery-powered sensor interfaces and low-side current sensing.
For engineers reviewing the LM2904LVIPWR datasheet, LM2904LVIPWR pinout, LM2904LVIPWR application, or LM2904LVIPWR equivalent, this page provides verified specifications, validated package mapping (TSSOP-8), confirmed dual-channel pin functions, and real-world implementation context for single-supply analog front-ends in power management and environmental monitoring systems.
Technical Context
The LM2904LVIPWR uses a P-channel input differential pair with parallel N-channel stage to extend common-mode range to the negative rail while eliminating phase reversal during overdrive - critical for reliable operation in unidirectional current-sense amplifiers and sensor buffers. Its unity-gain stability and 75° phase margin at 5.5 V ensure robust performance with capacitive loads up to 100 pF without external compensation.
Designed for low-voltage operation, it maintains full specification compliance from 2.7 V to 5.5 V, including 84 dB CMRR and 100 dB PSRR at 2.7 V across temperature. Input bias current remains ultra-low (±15 pA typ) and independent of common-mode voltage, supporting high-impedance source interfacing in smoke detector and HVAC sensor circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct connection to Li-ion, USB, and 3.3 V logic rails without level-shifting. |
| Input Offset Voltage | ±1 mV (typ) - enables accurate DC-coupled amplification of sub-100 mV shunt voltages in current sensing. |
| Unity-Gain Bandwidth | 1 MHz - sufficient for closed-loop response in 10–100 kHz sensor signal chains and power supply feedback loops. |
| Quiescent Current | 90 µA per channel - allows dual op-amp integration in always-on battery nodes with <200 µA total system standby draw. |
| Input Voltage Noise | 40 nV/√Hz at 1 kHz - preserves SNR in low-level thermistor, RTD, or piezoelectric sensor amplification stages. |
| Common-Mode Range | Extends to V– (ground) and within 1 V of V+ - permits true single-supply operation with rail-referenced inputs. |
| ESD Rating | ±2 kV HBM - meets IEC 61000-4-2 Level 2 for board-level robustness in appliance and industrial control modules. |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm body size), lead pitch 0.65 mm, exposed thermal pad optional - compatible with standard SMT reflow profiles and space-constrained PCB layouts in portable and rack-mount equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT1 | Output, Channel 1 | Amplified output node; capable of sourcing/sinking ±40 mA; swings within 40 mV of V– and 1 V of V+ under load. |
| 2: IN1– | Inverting Input, Channel 1 | Differential input terminal; accepts signals down to V–; paired with IN1+ to form first gain stage. |
| 3: IN1+ | Noninverting Input, Channel 1 | Differential input terminal; common-mode range includes ground; used for reference-based or single-ended buffering. |
| 4: V– | Negative Supply / Ground | Low-side power rail; serves as return path for both channels; must be connected even in single-supply configurations. |
| 5: IN2+ | Noninverting Input, Channel 2 | Independent second input; electrically isolated from Channel 1; supports dual-path signal processing (e.g., sensor + reference). |
| 6: IN2– | Inverting Input, Channel 2 | Second differential input; identical electrical characteristics to IN1–; enables matched dual-amplifier topologies. |
| 7: OUT2 | Output, Channel 2 | Second independent output; shares same supply rails and thermal environment as OUT1; no crosstalk above –100 dB at 1 kHz. |
| 8: V+ | Positive Supply | High-side power rail; supplies both amplifiers; requires local 0.1 µF ceramic bypass capacitor to minimize PSRR degradation. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdrive | Guaranteed via dual-input-stage architecture - eliminates output latch-up during transient input excursions in motor control feedback paths. |
| Rail-to-rail input common-mode range | Includes V– and extends to (V+) – 1 V - enables direct interface with grounded sensors and DAC outputs without level-shifting circuitry. |
| Unity-gain stable | Stable with gain ≥ 1 and CL ≤ 100 pF - simplifies design of buffer, comparator hysteresis, and active filter stages without external compensation. |
| Low input bias current | ±15 pA typical - minimizes voltage error across high-value gain-setting resistors (>1 MΩ) in precision transducer interfaces. |
| Extended temperature operation | Specified from –40°C to +125°C - qualified for under-hood automotive modules, industrial PLC I/O, and outdoor environmental sensor nodes. |
Applications
| Low-Side Current Sensing | Environmental Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring battery discharge current in cordless power tools using a 100 mΩ shunt resistor. IC Role / Device Role / Timing Role: Dual op-amp configured as differential amplifier (Ch1) and reference buffer (Ch2) to reject common-mode noise and stabilize ADC reference. Use Value: Achieves ±1% full-scale accuracy at 1 A load with <200 µA total quiescent draw, extending runtime in energy-constrained devices. |
Use Scenario: Amplifying microvolt-level output from a thermopile-based CO₂ sensor in HVAC ducts. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with matched gain resistors; Ch1 processes sensor signal, Ch2 buffers temperature compensation reference. Use Value: 40 nV/√Hz noise density and ±1 mV offset enable detection of <0.1°C temperature shifts without post-processing calibration. |
| Uninterruptible Power Supply (UPS) Monitoring | Field Transmitter for Temperature Sensors |
Use Scenario: Real-time monitoring of DC bus voltage and backup battery charge state in 24 V UPS units. IC Role / Device Role / Timing Role: Dual-channel voltage follower (Ch1) and comparator with hysteresis (Ch2) for battery undervoltage lockout. Use Value: 1 MHz bandwidth ensures fast response to line transients; 90 µA/channel allows continuous monitoring during extended grid-out events. |
Use Scenario: Converting PT100 resistance changes into 4–20 mA loop current in industrial process transmitters. IC Role / Device Role / Timing Role: Precision current-source driver (Ch1) and linearized sensor excitation amplifier (Ch2) operating from 3.3 V microcontroller supply. Use Value: Rail-to-rail input enables direct connection to ratiometric bridge outputs; ±1 mV offset contributes <0.25°C error in 0–100°C span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-voltage operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV358IDR | Higher quiescent current (130 µA/ch), lower PSRR (70 dB at 2.7 V), no guaranteed phase reversal immunity. | Suitable for general-purpose AC-coupled audio or non-critical sensor buffering where offset and ESD robustness are secondary. | Select LMV358IDR only when legacy footprint compatibility is required and 125°C operation is not needed. |
| TLV9002IDR | Lower input offset (±0.4 mV), higher GBW (1.5 MHz), but reduced ESD rating (1.5 kV HBM) and narrower common-mode range (to V– + 0.1 V). | Better for high-accuracy, higher-speed applications like active filters or fast-settling data acquisition - less suitable for ground-referenced shunt sensing. | Choose TLV9002IDR when offset and speed outweigh robustness requirements; avoid in safety-critical or high-noise industrial environments. |
Compared with LMV358IDR and TLV9002IDR, the LM2904LVIPWR uniquely balances ultra-low power, rail-to-rail input, guaranteed no-phase-reversal behavior, and 2-kV HBM robustness - making it the preferred choice for cost-optimized, single-supply industrial sensing where reliability and DC precision coexist.
Availability
LM2904LVIPWR is available at Aetrix Electronics and suitable for low-power sensor interfaces, battery management systems, and industrial process monitoring requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for LM2904LVIPWR 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 expertise in precision amplifiers and industrial-grade signal chain solutions.
The LM290xLV product line was engineered specifically for cost-sensitive, low-voltage industrial and consumer applications - delivering enhanced performance over legacy LM290x while maintaining pin compatibility and simplifying migration from older designs.
FAQ
What is the maximum capacitive load the LM2904LVIPWR can drive while remaining stable?
The LM2904LVIPWR is unity-gain stable with capacitive loads up to 100 pF, as confirmed by phase margin measurements ≥75° at 5.5 V supply. For loads exceeding 100 pF, TI recommends adding a series resistor (typically 10–50 Ω) between the output and capacitive node to isolate the amplifier's output impedance from the reactive load - preserving stability without degrading DC accuracy. This behavior is documented in Figure 6-20 of the SBOS960C datasheet.
Does the LM2904LVIPWR support true single-supply operation with inputs referenced to ground?
Yes, the LM2904LVIPWR supports true single-supply operation: its input common-mode voltage range extends to V– (ground) and up to (V+) – 1 V across the full 2.7 V to 5.5 V supply range. This allows direct connection of grounded sensors, thermistors, or shunt resistors without level-shifting circuitry. The dual-input-stage architecture also prevents phase reversal when inputs exceed the common-mode limits - a key differentiator from earlier LM2904 variants.
What is the overload recovery time of the LM2904LVIPWR, and how does it impact step-response accuracy?
The LM2904LVIPWR exhibits a typical overload recovery time of 1 µs, defined as the duration required to exit saturation and resume linear operation after an overdriven input condition. This fast recovery minimizes distortion in pulse-width modulated (PWM) current sensing and transient-heavy power supply monitoring. When combined with its 1.5 V/µs slew rate and 4 µs 0.1% settling time (for a 2-V step), the LM2904LVIPWR maintains fidelity in dynamic signal paths without requiring external blanking or delay circuits.
Can the LM2904LVIPWR be used in 125°C ambient environments without derating?
Yes, the LM2904LVIPWR is fully specified and tested for operation from –40°C to +125°C ambient temperature. Electrical parameters including input offset voltage (±5 mV max), CMRR (84 dB min), and quiescent current (160 µA max) are guaranteed across this range. Thermal metrics such as RθJA = 200.7°C/W (TSSOP-8) confirm safe junction temperatures under typical PCB copper pour conditions - no derating is required for continuous operation at 125°C ambient in properly laid out designs.
How does the ESD protection architecture of the LM2904LVIPWR differ from standard op-amps?
The LM2904LVIPWR integrates current-steering diodes from each input and output pin to both supply rails, terminating at an internal absorption device - providing robust ±2 kV HBM protection without external clamping components. Unlike basic op-amps relying solely on junction diodes, this architecture safely shunts ESD transients while limiting input current to ≤10 mA (per JEDEC JS-001), enabling direct use in exposed I/O sections of smoke detectors, appliance control panels, and field transmitter terminals without added TVS diodes.
LM2904LVIPWR 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:
- 1.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 90µA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
LM2904LVIPWR FAQ
1.How can I place an order for LM2904LVIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2904LVIPWR 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 LM2904LVIPWR reliable?
The price and inventory of LM2904LVIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2904LVIPWR is usually 5 days.
3.What payment methods are accepted for LM2904LVIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2904LVIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2904LVIPWR?
LM2904LVIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2904LVIPWR 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 LM2904LVIPWR?
For technical support, including LM2904LVIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2904LVIPWR requirements.
6.How does Aetrix verify that LM2904LVIPWR is sourced from the original manufacturer or authorized distributors?
All LM2904LVIPWR 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 LM2904LVIPWR meets industry standards.
7.What is the process for return or replacement of LM2904LVIPWR?
All LM2904LVIPWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2904LVIPWR, 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 LM2904LVIPWR part is unused and in its original packaging.
Return procedure for LM2904LVIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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