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Texas Instruments LM2903AVQDRQ1
- Part No.:
- LM2903AVQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2903AVQDRQ1.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,488
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Product details
Overview
LM2903AVQDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual open-drain voltage comparator for automotive systems, operating from 2 V to 32 V supply, with ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 1 µs typical propagation delay. It serves in HEV/EV powertrain monitoring, body control module voltage supervision, and infotainment system level-shifting circuits.
For engineers reviewing the LM2903AVQDRQ1 datasheet, LM2903AVQDRQ1 pinout, LM2903AVQDRQ1 application, or LM2903AVQDRQ1 equivalent, key selection criteria include its automotive-grade temperature range (–40°C to +125°C), open-drain output compatibility with TTL/MOS/CMOS, differential input voltage range up to ±36 V, low 600 µA total quiescent current at 5 V, and validated functional safety documentation support.
Technical Context
The LM2903AVQDRQ1 implements a PNP Darlington-pair input stage enabling rail-to-rail common-mode input down to ground and up to VCC – 1.5 V, with internal clamping (Q15) forcing low output when inputs exceed VCM range. Its open-drain NPN output stage sinks up to 21 mA and interfaces directly with pull-up networks for logic-level translation.
It supports single-supply operation from 2 V to 32 V (V-suffix rating), maintains stable performance across –40°C to +125°C ambient, and features dedicated ESD protection (2 kV HBM / 1 kV CDM) per AEC-Q100-002/011, distinguishing it from legacy LM2903-Q1 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 32 V - Enables direct interface with 12 V/24 V automotive rails and 3.3 V/5 V logic without level shifters. |
| Input Offset Voltage (typ) | ±0.37 mV - Ensures accurate threshold detection in battery monitoring and sensor signal conditioning. |
| Input Bias Current (typ) | 3.5 nA - Minimizes loading on high-impedance voltage dividers and resistive sensors. |
| Propagation Delay (typ) | 1 µs - Supports real-time overvoltage/undervoltage fault response in powertrain subsystems. |
| Quiescent Current (typ) | 600 µA - Reduces standby power in always-on vehicle modules like body control units. |
| Differential Input Range | ±36 V - Allows safe comparison of signals referenced to different potentials (e.g., isolated CAN bus monitoring). |
| Output Sink Current | 21 mA - Drives standard LED indicators or enables wired-AND logic with multiple comparators. |
Pinout & Package
LM2903AVQDRQ1 is packaged in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with exposed pad not present. Pin functions are standardized across SOIC, TSSOP, VSSOP, WSON, and SOT-23 variants per TI's LM2903-Q1 family pinout specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN collector - Requires external pull-up; enables wired-AND and multi-voltage logic interfacing. |
| 1IN− | Comparator 1 inverting input | Negative input node of first comparator - Accepts signals from 0 V to VCC − 1.5 V with guaranteed operation. |
| 1IN+ | Comparator 1 non-inverting input | Positive input node of first comparator - Can exceed VCC level without damage; supports high-side sensing. |
| GND | Ground reference | Common return path for supply and inputs - Must be low-impedance to minimize noise coupling into sensitive inputs. |
| 2IN+ | Comparator 2 non-inverting input | Positive input node of second comparator - Electrically isolated from 1st comparator; shares same supply and ground. |
| 2IN− | Comparator 2 inverting input | Negative input node of second comparator - Matches 1IN− electrical behavior and voltage range. |
| 2OUT | Comparator 2 output | Open-drain NPN collector - Independent of 1OUT; allows dual independent decision outputs in one package. |
| VCC | Positive supply | Main power rail - Rated for 32 V maximum (V-suffix); supplies both comparators and internal bias circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - Meets automotive powertrain and chassis system reliability requirements. |
| Open-drain outputs | Enables flexible logic-level translation and wired-AND functionality - Eliminates need for external logic gates in fault-detection trees. |
| Input common-mode range includes ground | Supports direct sensing of 0 V referenced signals (e.g., battery negative terminal monitoring) - Critical for low-side current sensing. |
| 2 kV HBM ESD rating | Enhanced robustness against assembly and in-vehicle electrostatic discharge - Reduces field failure risk in unshielded harness environments. |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance - Accelerates ISO 26262 ASIL-B system certification. |
Applications
| HEV/EV Battery Monitoring | Body Control Module (BCM) Supervision |
|---|---|
Use Scenario: Real-time detection of cell overvoltage/undervoltage conditions in 400 V traction battery packs using resistor-divider feedback. IC Role / Device Role / Timing Role: Dual comparator performs independent high- and low-threshold comparisons on scaled battery voltage, generating fault flags with <1 µs latency. Use Value: Enables fast isolation of faulty cells before thermal runaway, meeting ASIL-C timing constraints for battery management systems. | Use Scenario: Monitoring 12 V supply stability and door lock actuator current draw in automotive BCMs. IC Role / Device Role / Timing Role: One comparator supervises VBAT against 11.5 V/13.2 V thresholds; the other detects >100 mA load current via shunt voltage. Use Value: Provides deterministic power-good signaling and short-circuit detection without MCU intervention, reducing wake-up latency. |
| Infotainment Display Backlight Control | Automotive HVAC Fan Speed Regulation |
Use Scenario: Adaptive backlight dimming based on ambient light sensor output versus programmable reference in digital cluster displays. IC Role / Device Role / Timing Role: Comparator compares photodiode amplifier output to DAC-generated reference; open-drain output drives PWM enable line. Use Value: Delivers flicker-free brightness transitions with sub-millisecond response, improving driver visual comfort during rapid lighting changes. | Use Scenario: Closed-loop fan speed control using tachometer pulse counting and voltage feedback from blower motor sense resistor. IC Role / Device Role / Timing Role: Compares filtered tach signal to target RPM threshold and compares motor voltage to overcurrent limit simultaneously. Use Value: Enables dual-fault detection (stall + overcurrent) with single IC, simplifying PCB layout and reducing BOM count in HVAC control modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903BQDRQ1 | Same package, 2 kV HBM/1 kV CDM ESD, ±0.37 mV offset, but rated for 36 V max supply (not 32 V) | Preferred for 36 V battery systems (e.g., commercial vehicle 24 V nominal); identical pinout and footprint | Select when higher supply voltage margin is required; no layout change needed. |
| TLV1702QDRQ1 | Rail-to-rail input, 36 V supply, 0.8 µs propagation delay, but 1.1 mA quiescent current and no AEC-Q100 Grade 0/1 temp validation | Suitable for non-safety-critical industrial sensors; lacks automotive qualification documentation | Choose only for cost-sensitive non-automotive designs where rail-to-rail input is mandatory. |
Compared with LM2903BQDRQ1, LM2903AVQDRQ1 trades 4 V supply headroom for tighter V-suffix compliance in 32 V systems, while TLV1702QDRQ1 offers faster response and rail-to-rail input at the expense of higher IQ and no automotive qualification - making LM2903AVQDRQ1 optimal for cost-constrained, safety-aware 12 V/24 V vehicle subsystems.
Availability
LM2903AVQDRQ1 is available at Aetrix Electronics and suitable for automotive powertrain monitoring, body control module supervision, and infotainment display backlight control requiring stable component supply across extended production lifecycles.
Supply support for LM2903AVQDRQ1 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 and embedded processing solutions, with deep expertise in automotive electronics and functional safety design.
The LM2903-Q1 product line was developed specifically for AEC-Q100-compliant automotive subsystems requiring robust, low-cost voltage comparison - targeting powertrain, chassis, and body electronics where reliability under extreme temperature and ESD stress is mandatory.
FAQ
What is the maximum supply voltage rating for LM2903AVQDRQ1?
The LM2903AVQDRQ1 has a maximum supply voltage rating of 32 V, as confirmed by its "V" suffix designation in the LM2903-Q1 family. This distinguishes it from standard LM2903-Q1 (30 V) and LM2903B-Q1 (36 V) variants. Operation beyond 32 V risks permanent damage, and all absolute maximum ratings assume proper PCB layout with adequate decoupling.
Does LM2903AVQDRQ1 support dual-supply operation?
Yes, LM2903AVQDRQ1 supports dual-supply operation provided the difference between V+ and V− is within 2 V to 32 V and V+ is at least 1.5 V more positive than the input common-mode voltage. However, automotive implementations typically use single-supply configuration with GND as V−, leveraging its ground-referenced input capability.
What is the input common-mode voltage range of LM2903AVQDRQ1?
The input common-mode voltage range of LM2903AVQDRQ1 extends from ground to VCC − 1.5 V for the inverting input, while the non-inverting input can safely exceed VCC. This allows direct sensing of 0 V referenced signals (e.g., battery negative) and high-side voltage monitoring without level shifting - a key enabler for automotive fault detection circuits.
Is LM2903AVQDRQ1 pin-compatible with LM2903QDRQ1?
Yes, LM2903AVQDRQ1 is pin-compatible with LM2903QDRQ1 and all other SOIC-8 variants in the LM2903-Q1 family, including LM2903BQDRQ1 and LM2903E-Q1. The "A" and "V" suffixes denote enhanced offset voltage and 32 V supply rating respectively, but share identical pinout, footprint, and soldering profile per TI's mechanical drawings.
What functional safety documentation is available for LM2903AVQDRQ1?
Texas Instruments provides functional safety documentation for LM2903AVQDRQ1 including FIT rate data, failure mode effects analysis (FMEA), and diagnostic coverage guidance - all accessible via TI's functional safety resource center. This documentation supports ISO 26262 ASIL-B system-level certification when used per recommended operating conditions and layout guidelines.
LM2903AVQDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-SOIC
LM2903AVQDRQ1 FAQ
1.How can I place an order for LM2903AVQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903AVQDRQ1 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 LM2903AVQDRQ1 reliable?
The price and inventory of LM2903AVQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903AVQDRQ1 is usually 5 days.
3.What payment methods are accepted for LM2903AVQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903AVQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903AVQDRQ1?
LM2903AVQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903AVQDRQ1 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 LM2903AVQDRQ1?
For technical support, including LM2903AVQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903AVQDRQ1 requirements.
6.How does Aetrix verify that LM2903AVQDRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2903AVQDRQ1 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 LM2903AVQDRQ1 meets industry standards.
7.What is the process for return or replacement of LM2903AVQDRQ1?
All LM2903AVQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903AVQDRQ1, 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 LM2903AVQDRQ1 part is unused and in its original packaging.
Return procedure for LM2903AVQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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