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Texas Instruments LM2903ITL/NOPB
- Part No.:
- LM2903ITL/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFBGA, DSBGA
- Datasheet:
-
LM2903ITL/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:246
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Product details
Overview
LM2903ITL/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, and rail-to-rail input common-mode range including ground - enabling accurate sensing near 0 V in battery-powered industrial controls and power management systems.
For engineers reviewing the LM2903ITL/NOPB datasheet, LM2903ITL/NOPB pinout, LM2903ITL/NOPB application, or LM2903ITL/NOPB equivalent, key selection considerations include its open-collector outputs compatible with TTL/CMOS logic, wide 2.0–36 V supply range, input bias current of 25 nA, and guaranteed operation from −40°C to +85°C - all critical for robust comparator deployment in embedded sensor interfaces and voltage monitoring.
Technical Context
The LM2903ITL/NOPB integrates two independent comparators with PNP input stages, enabling input common-mode voltage down to ground on single supplies and differential input range equal to the full supply voltage (up to ±18 V dual or 36 V single). Its open-collector NPN output transistors each sink up to 16 mA with 250 mV saturation voltage at 4 mA load.
It operates across −40°C to +85°C junction temperature, draws supply current independent of V+, and features input offset voltage drift minimized via internal trimming - supporting stable threshold detection in automotive body electronics and industrial PLC I/O modules without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 36 V single supply or ±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 maximum at 25°C - ensures ≤3 mV threshold error in precision window comparators and overvoltage protection circuits. |
| Supply Current | 0.4 mA typical at 5 V - enables multi-year battery life in portable equipment and low-quiescent IoT sensor nodes. |
| Input Bias Current | 25 nA maximum - allows use with high-impedance sources (e.g., thermistors, photodiodes) without significant signal loading. |
| Output Saturation Voltage | 250 mV at 4 mA sink - guarantees reliable logic-low assertion for TTL/CMOS inputs even under moderate load conditions. |
| Input Common-Mode Range | Includes ground (0 V) up to V+−1.5 V - permits direct sensing of signals referenced to system ground in single-supply configurations. |
| Response Time | 1.5 μs typical (large-signal) - sufficient for line-frequency monitoring, motor stall detection, and slow-control-loop feedback. |
Pinout & Package
LM2903ITL/NOPB is housed in an 8-pin SOIC package (4.90 mm × 3.91 mm), optimized for automated assembly and thermal performance in industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Open-collector output, Channel A | Sinks current to ground when Channel A output is active low; requires external pull-up to define logic-high level and interface voltage. |
| −INA (Pin 2) | Inverting input, Channel A | Accepts reference or threshold voltage; input bias current flows out of pin (PNP stage), requiring low-source-impedance design for accuracy. |
| +INA (Pin 3) | Non-inverting input, Channel A | Accepts sensed signal; common-mode range includes ground, enabling direct connection to 0 V-referenced sensors. |
| GND (Pin 4) | Ground reference | System ground return for both comparators and internal bias network; must be low-impedance to minimize noise coupling. |
| +INB (Pin 5) | Non-inverting input, Channel B | Independent input for second comparator; identical electrical characteristics to +INA. |
| −INB (Pin 6) | Inverting input, Channel B | Independent reference input for second comparator; supports dual-threshold or window detection schemes. |
| OUTB (Pin 7) | Open-collector output, Channel B | Functionally identical to OUTA; outputs may be wire-OR'd for logical combining without additional logic gates. |
| V+ (Pin 8) | Positive supply | Single-supply rail or positive rail in dual-supply configuration; powers both comparators and defines upper common-mode limit. |
Key Features
| Feature | Design Value |
|---|---|
| Input common-mode range includes ground | Enables direct sensing of 0 V–referenced signals (e.g., current shunt, battery terminal) without level-shifting circuitry. |
| Open-collector outputs | Supports flexible logic interfacing (TTL/CMOS/ECL/MOS), wired-OR functionality, and pull-up to voltages independent of V+. |
| Low supply current (0.4 mA) | Reduces system power budget in always-on monitoring applications such as smoke detectors and battery fuel gauges. |
| Wide supply range (2–36 V) | Eliminates need for dedicated regulator rails in mixed-voltage systems - e.g., 3.3 V MCU logic with 24 V field-side sensing. |
| Low input bias current (25 nA) | Minimizes voltage drop across high-value divider networks used for precision reference generation. |
Applications
| Overvoltage Protection Circuit | Battery State-of-Charge Monitor |
|---|---|
|
Use Scenario: Detects when a 12 V lead-acid battery exceeds 14.4 V during charging to disable charging current. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper threshold, second verifies lower bound to prevent false trips. Use Value: ±3 mV offset ensures trip point accuracy within ±0.03% of 14.4 V, while 0.4 mA quiescent current avoids parasitic drain during standby. |
Use Scenario: Monitors cell voltage in a 3-cell Li-ion pack to trigger low-battery warning at 9.0 V and critical shutdown at 8.4 V. IC Role / Device Role / Timing Role: Precision dual comparator compares scaled pack voltage against two resistor-divider references. Use Value: Input common-mode range including ground allows direct connection to bottom cell's negative terminal; 25 nA bias current prevents measurement error from divider loading. |
| Industrial Temperature Threshold Detector | PLC Digital Input Conditioning |
|
Use Scenario: Converts output of a PT100 RTD bridge into digital alarm signal when temperature exceeds 100°C in HVAC control panel. IC Role / Device Role / Timing Role: Single comparator compares amplified RTD voltage to fixed reference; second channel unused or tied off. Use Value: Guaranteed −40°C to +85°C operation ensures reliability in uncontrolled cabinet environments; 36 V max supply accommodates 24 V PLC backplane rails. |
Use Scenario: Conditions 0–24 V field sensor signals into clean 3.3 V logic levels for microcontroller GPIO input in programmable logic controller modules. IC Role / Device Role / Timing Role: Dual comparator provides hysteresis-enhanced signal conditioning - one for rising edge, one for falling edge to reject noise. Use Value: Open-collector outputs interface directly to MCU pull-up resistors; 250 mV saturation voltage ensures <0.5 V logic-low under 4 mA load, meeting 3.3 V LVTTL specs. |
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; rated for 0°C to +70°C ambient (vs. LM2903ITL/NOPB's −40°C to +85°C). | Not qualified for extended-temperature industrial or automotive under-hood use. | Select LM393DR only for commercial-grade cost-sensitive applications where temperature range is not limiting. |
| TLV3702IDR | Rail-to-rail input, 1.8–10 V supply, 85 μA supply current; CMOS output (push-pull), not open-collector. | Requires redesign of pull-up network and logic interface; unsuitable for wired-OR or mixed-voltage interfacing. | Choose TLV3702IDR only when ultra-low power (<100 μA) and rail-to-rail input are mandatory, and open-collector functionality is unnecessary. |
Compared with LM393DR, LM2903ITL/NOPB offers extended temperature capability critical for industrial automation; compared with TLV3702IDR, it retains open-collector flexibility and higher supply voltage tolerance essential for 24 V field-side signal conditioning - making it the optimal choice for ruggedized embedded comparator applications.
Availability
LM2903ITL/NOPB is available at Aetrix Electronics and suitable for industrial control systems, battery management units, and power supply supervision requiring stable component supply across long production lifecycles.
Supply support for LM2903ITL/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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
LM2903ITL/NOPB belongs to TI's precision comparator product line, engineered for reliable threshold detection in harsh environments - emphasizing low offset, wide supply range, and robust ESD tolerance for factory automation and energy infrastructure.
FAQ
What is the operating temperature range for LM2903ITL/NOPB?
The LM2903ITL/NOPB is specified for operation from −40°C to +85°C junction temperature. This extended industrial temperature range makes it suitable for deployment in automotive body control modules, outdoor industrial sensors, and power supply monitoring circuits where ambient conditions exceed commercial-grade limits. The datasheet confirms this range under Recommended Operating Conditions (Section 6.3).
Does LM2903ITL/NOPB support single-supply operation with ground-referenced inputs?
Yes, LM2903ITL/NOPB explicitly supports single-supply operation with input common-mode voltage range that includes ground (0 V), down to V+−1.5 V. This allows direct connection of sensors or reference dividers referenced to system ground - a key advantage over older comparators requiring dual supplies for ground-sensing applications. The feature is documented in Section 1 (Features) and Section 3 (Description) of the datasheet.
What is the maximum sink current capability of LM2903ITL/NOPB outputs?
Each open-collector output of LM2903ITL/NOPB can sink up to 16 mA while maintaining saturation voltage ≤400 mV (typical 250 mV at 4 mA). This is verified in Electrical Characteristics Table 6.7 (Output Sink Current and Saturation Voltage). Exceeding 16 mA risks output transistor exit from saturation, causing elevated output voltage and potential logic misinterpretation.
Can multiple LM2903ITL/NOPB outputs be connected together?
Yes, the open-collector outputs of LM2903ITL/NOPB support wired-OR connection - multiple OUTA or OUTB pins can be tied to a shared pull-up resistor to implement logical OR functions without external gates. This is explicitly stated in Section 8.1 (Application Information) and Figure 30 (Oring the Outputs) of the datasheet, and relies on the NPN output transistor structure sinking current to ground.
Is LM2903ITL/NOPB RoHS compliant and lead-free?
Yes, LM2903ITL/NOPB is RoHS compliant and lead-free. The "NOPB" suffix in the part number denotes "No Lead (Pb)-Free", confirming compliance with EU Directive 2011/65/EU. TI's official packaging information and orderable addendum confirm this designation, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly.
LM2903ITL/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
LM2903ITL/NOPB FAQ
1.How can I place an order for LM2903ITL/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903ITL/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 LM2903ITL/NOPB reliable?
The price and inventory of LM2903ITL/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903ITL/NOPB is usually 5 days.
3.What payment methods are accepted for LM2903ITL/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903ITL/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903ITL/NOPB?
LM2903ITL/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903ITL/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 LM2903ITL/NOPB?
For technical support, including LM2903ITL/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903ITL/NOPB requirements.
6.How does Aetrix verify that LM2903ITL/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2903ITL/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 LM2903ITL/NOPB meets industry standards.
7.What is the process for return or replacement of LM2903ITL/NOPB?
All LM2903ITL/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2903ITL/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 LM2903ITL/NOPB part is unused and in its original packaging.
Return procedure for LM2903ITL/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903ITL/NOPB Tags
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