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Texas Instruments LM2903ITLX/NOPB
- Part No.:
- LM2903ITLX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFBGA, DSBGA
- Datasheet:
-
LM2903ITLX/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:10,500
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Product details
Overview
LM2903ITLX/NOPB from Texas Instruments is a dual low-power, low-offset voltage comparator IC designed for single- or dual-supply operation in precision threshold detection and analog-to-digital interface circuits. It delivers ±3 mV max input offset voltage, 0.4 mA supply current at 5 V, 25 nA input bias current, and rail-to-rail input common-mode range including ground - enabling accurate sensing near 0 V in battery-powered and industrial control systems.
For engineers reviewing the LM2903ITLX/NOPB datasheet, LM2903ITLX/NOPB pinout, LM2903ITLX/NOPB application, or LM2903ITLX/NOPB equivalent, key selection considerations include its open-collector outputs compatible with TTL/CMOS/MOS logic, wide 2.0–36 V supply range, −40°C to +85°C operating temperature, and SOIC-8 packaging suitable for space-constrained industrial and automotive subsystems.
Technical Context
The LM2903ITLX/NOPB integrates two independent PNP-input comparators with open-collector NPN output stages, supporting both single-supply (2.0–36 V) and dual-supply (±1.0–±18 V) configurations. Its input stage allows common-mode voltage down to ground and differential input voltage up to the full supply rail - critical for zero-crossing detection and high-side sensing.
Each comparator features 25 nA typical input bias current, 5 nA max input offset current, and 250 mV max saturation voltage at 4 mA sink load. The device draws only 0.4 mA total supply current at 5 V - stable across voltage and temperature - making it suitable for always-on monitoring in energy-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 36 V single supply; ±1.0 V to ±18 V dual supply - supports direct integration into 3.3 V, 5 V, 12 V, and 24 V systems without level-shifting. |
| Input Offset Voltage | ±3 mV max at 25°C - enables accurate threshold detection within ±0.1% of reference voltage at 3 V supply. |
| Supply Current | 0.4 mA typical at 5 V - ensures <1 mW power dissipation, ideal for battery-backed sensors and portable instrumentation. |
| Input Bias Current | 25 nA typical - permits use with high-impedance sources (e.g., thermistors, photodiodes) without significant signal loading. |
| Output Type | Open-collector NPN - allows wired-OR logic, flexible pull-up to any compatible rail (including higher than V+), and direct TTL/CMOS interfacing. |
| Input Common-Mode Range | Includes ground (0 V) up to V+−1.5 V - supports ground-referenced inputs in single-supply designs without external biasing. |
| Operating Temperature | −40°C to +85°C - qualified for industrial automation, automotive body electronics, and outdoor equipment environments. |
Pinout & Package
LM2903ITLX/NOPB is housed in an 8-pin SOIC package (4.90 mm × 3.91 mm, 1.27 mm pitch), optimized for automated assembly and thermal performance in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Channel A output | Open-collector NPN drain - requires external pull-up; sinks up to 16 mA; compatible with 3.3 V/5 V/12 V logic families. |
| −INA (Pin 2) | Channel A inverting input | High-impedance PNP base - accepts signals from 0 V to V+−1.5 V; supports reference or feedback connections. |
| +INA (Pin 3) | Channel A non-inverting input | High-impedance PNP base - used for signal input in standard comparator configuration; enables zero-crossing detection. |
| GND (Pin 4) | Ground reference | Common return for both comparators and internal bias network - must be low-impedance for stable offset and noise immunity. |
| +INB (Pin 5) | Channel B non-inverting input | Independent high-impedance input - allows dual-threshold or window comparator implementation with shared GND/V+. |
| −INB (Pin 6) | Channel B inverting input | Independent high-impedance input - configurable as second reference or inverted signal path in differential sensing. |
| OUTB (Pin 7) | Channel B output | Open-collector NPN drain - electrically isolated from OUTA; supports independent logic loads or wired-OR with OUTA. |
| V+ (Pin 8) | Positive supply | Power rail for both comparators - supplies internal bias and output stage; tolerant of 36 V transient per absolute max rating. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with ground-sensing input | Enables direct interface to 0 V-referenced sensors (e.g., current shunts, thermocouples) without level-shifting circuitry. |
| Low 0.4 mA supply current | Reduces system standby power by >90% vs. legacy comparators - extends battery life in IoT nodes and remote monitors. |
| ±3 mV max input offset voltage | Ensures consistent trip-point accuracy across temperature and unit-to-unit variation in safety-critical overvoltage detection. |
| Open-collector outputs with 16 mA sink capability | Permits flexible logic interfacing, multi-comparator OR-ing, and direct drive of LEDs, relays, or MOSFET gates without buffers. |
| ESD robustness: ±1300 V HBM | Meets industrial handling requirements - reduces field failure risk during PCB assembly and end-equipment integration. |
Applications
| Battery Voltage Monitor | Industrial Overvoltage Protection |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger cutoff at 4.2 V or 2.8 V thresholds. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel for upper limit, one for lower limit. Use Value: Achieves ±0.1% threshold accuracy using internal 25 nA bias current and ±3 mV offset, eliminating need for trimming resistors. |
Use Scenario: Detecting AC line surges (>277 VAC) in programmable logic controller (PLC) input modules. IC Role / Device Role / Timing Role: High-voltage comparator with resistor-divider input scaling - compares scaled AC peak to precision reference. Use Value: Input common-mode range extending to V+−1.5 V allows direct sensing from 300 VDC-scaled inputs using 5 V supply and 100:1 divider. |
| Automotive Cabin Temperature Control | Smart Meter Tamper Detection |
|
Use Scenario: Converting NTC thermistor resistance changes into digital on/off signals for HVAC fan staging. IC Role / Device Role / Timing Role: Single comparator with hysteresis - compares thermistor voltage against adjustable reference. Use Value: 25 nA input bias avoids self-heating error in high-resistance thermistor networks (<100 kΩ), preserving measurement fidelity. |
Use Scenario: Detecting magnetic tampering via Hall sensor output crossing predefined thresholds in utility meters. IC Role / Device Role / Timing Role: Dual comparator implementing window violation detection - flags out-of-range Hall voltage indicating magnet presence. Use Value: Open-collector outputs enable direct connection to microcontroller GPIO with internal pull-ups, reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-collector comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Same core architecture and pinout; wider temp range (0°C to +70°C vs. −40°C to +85°C); 7 mV max offset voltage. | Not qualified for extended industrial or automotive ambient temperatures; less precise thresholding. | Select LM393DR only for cost-sensitive commercial-grade applications where temperature stability and offset accuracy are secondary. |
| TLV3702IDR | Rail-to-rail input/output; 1.8 V min supply; 1.5 mV max offset; 85 μA supply current; push-pull output (not open-collector). | Requires redesign of pull-up networks and logic interfacing; unsuitable for wired-OR or mixed-voltage bus applications. | Choose TLV3702IDR when ultra-low power (<100 μA) and rail-to-rail precision are required, and open-collector functionality is not needed. |
Compared with LM393DR and TLV3702IDR, LM2903ITLX/NOPB uniquely balances industrial temperature qualification, open-collector flexibility, and sub-3 mV offset - making it the preferred choice for robust, maintainable designs in harsh environments where interoperability with legacy logic families is essential.
Availability
LM2903ITLX/NOPB is available at Aetrix Electronics and suitable for industrial automation, automotive subsystems, and battery-powered instrumentation requiring stable component supply across long production lifecycles.
Supply support for LM2903ITLX/NOPB 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 signal conditioning and power management ICs.
The LM2903ITLX/NOPB belongs to TI's legacy precision comparator family, engineered specifically for reliable, low-cost threshold detection in industrial, automotive, and consumer systems where ground-sensing capability and logic compatibility are critical.
FAQ
What is the maximum supply voltage for LM2903ITLX/NOPB?
The LM2903ITLX/NOPB supports a maximum supply voltage of 36 V for single-supply operation and ±18 V for dual-supply operation, as specified in the Absolute Maximum Ratings table. Exceeding 36 V may cause permanent damage. The device operates reliably across the full recommended range of 2.0 V to 36 V, maintaining 0.4 mA supply current and stable offset performance.
Does LM2903ITLX/NOPB support true rail-to-rail input?
No, LM2903ITLX/NOPB does not support rail-to-rail input. Its input common-mode voltage range extends from ground (0 V) to V+−1.5 V at 25°C - meaning the upper limit is 1.5 V below the positive supply rail. This is sufficient for ground-referenced sensing but excludes direct V+ tracking. For true rail-to-rail input, consider alternatives like TLV3702IDR.
Can LM2903ITLX/NOPB outputs be wired together?
Yes, the open-collector outputs of LM2903ITLX/NOPB can be safely wired together (wired-OR configuration) because each output is an uncommitted NPN collector. This enables logical OR functions, shared pull-up networks, or fault-bus signaling without risk of contention or latch-up - a key advantage over push-pull output comparators.
What is the typical input bias current of LM2903ITLX/NOPB?
The LM2903ITLX/NOPB has a typical input bias current of 25 nA at 25°C, with a maximum of 250 nA over temperature. This low value minimizes loading on high-impedance sources such as thermistors, photodiodes, or RC timing networks - preserving signal integrity and reducing measurement error in precision analog front-ends.
Is LM2903ITLX/NOPB RoHS compliant and lead-free?
Yes, LM2903ITLX/NOPB is RoHS compliant and lead-free, as indicated by the "/NOPB" suffix in the part number (NOPB = No Lead, Pb-Free). It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards, ensuring compatibility with modern lead-free manufacturing processes.
LM2903ITLX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-WFBGA, DSBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 7mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 700ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-DSBGA
LM2903ITLX/NOPB FAQ
1.How can I place an order for LM2903ITLX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903ITLX/NOPB 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 LM2903ITLX/NOPB reliable?
The price and inventory of LM2903ITLX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903ITLX/NOPB is usually 5 days.
3.What payment methods are accepted for LM2903ITLX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903ITLX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903ITLX/NOPB?
LM2903ITLX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903ITLX/NOPB 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 LM2903ITLX/NOPB?
For technical support, including LM2903ITLX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903ITLX/NOPB requirements.
6.How does Aetrix verify that LM2903ITLX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2903ITLX/NOPB 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 LM2903ITLX/NOPB meets industry standards.
7.What is the process for return or replacement of LM2903ITLX/NOPB?
All LM2903ITLX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2903ITLX/NOPB, 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 LM2903ITLX/NOPB part is unused and in its original packaging.
Return procedure for LM2903ITLX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903ITLX/NOPB Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM2903P
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