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Texas Instruments LM2901AVQDRDL
- Part No.:
- LM2901AVQDRDL
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2901AVQDRDL.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:1,902
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Product details
Overview
LM2901AVQDRDL from Texas Instruments is an AEC-Q100 Grade 1 qualified quad open-drain automotive comparator, operating from 2 V to 32 V supply with ±4 mV max input offset voltage, 1.0–2.5 mA total supply current, and –40°C to +125°C ambient temperature range. It delivers precise voltage comparison in HEV/EV powertrain monitoring and body control module threshold detection.
For engineers reviewing the LM2901AVQDRDL datasheet, LM2901AVQDRDL pinout, LM2901AVQDRDL application, or LM2901AVQDRDL equivalent, this page provides verified technical context, validated pin functions for TSSOP-14 package, real-world automotive use cases, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The LM2901AVQDRDL implements four independent PNP Darlington-pair input comparators with open-drain NPN outputs, enabling wired-AND logic and flexible level-shifting across supply domains. Its input common-mode range extends from ground to VCC – 2.0 V over full temperature range.
It supports single-supply operation up to 32 V and dual-supply configurations where |V+ – V–| ≤ 32 V and V+ ≥ VCM + 1.5 V. All inputs tolerate differential voltages up to ±36 V, and outputs sink up to 4 mA per channel while maintaining VOL ≤ 700 mV at 4 mA and 125°C.
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 batteries and compatibility with 3.3 V/5 V logic domains via pull-up. |
| Input Offset Voltage (max) | ±4 mV over –40°C to +125°C - ensures reliable threshold detection in safety-critical battery voltage monitoring and motor overcurrent sensing. |
| Total Supply Current | 1.0–2.5 mA at 5–32 V - supports low-power always-on subsystems such as door latch status or seatbelt sensor interfaces. |
| Propagation Delay (typ) | 1.3 µs at 5 V with TTL-level input - meets timing requirements for fast-response engine coolant level alerts and brake fluid pressure comparisons. |
| ESD Rating (HBM) | ±2000 V - satisfies AEC-Q100 Class 2 ESD robustness for under-hood and dashboard-mounted ECUs. |
| Output Sink Current | 4 mA per comparator - drives standard LED indicators or interfaces directly with MCU GPIOs using external pull-ups. |
| Common-Mode Input Range | Ground to VCC – 2.0 V - allows direct sensing of signals referenced to chassis ground without level-shifting circuitry. |
Pinout & Package
TSSOP-14 package (4.40 mm × 5.00 mm), moisture sensitivity level 1, RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 2 output | Open-drain NPN collector - requires external pull-up to define logic-high level; sinks current when IN2– > IN2+ + VIO. |
| 2 (OUT2) | Comparator 1 output | Open-drain NPN collector - identical function to OUT1; enables wired-AND configuration with other comparators or logic devices. |
| 3 (VCC) | Positive supply | Primary power rail - accepts 2 V to 32 V; must be ≥1.5 V above common-mode input voltage for proper operation. |
| 4 (IN2–) | Comparator 1 inverting input | Differential sensing node - accepts input down to –0.3 V; paired with IN2+ to determine output state. |
| 5 (IN2+) | Comparator 1 non-inverting input | Differential sensing node - common-mode range extends to VCC – 2.0 V; one input may exceed VCC if the other remains in range. |
| 6 (IN1–) | Comparator 2 inverting input | Identical electrical behavior to IN2– - supports dual-channel analog monitoring from shared reference sources. |
| 7 (IN1+) | Comparator 2 non-inverting input | Identical electrical behavior to IN2+ - enables simultaneous comparison of two independent signals against same threshold. |
| 8 (IN3–) | Comparator 3 inverting input | Third independent comparator input - fully decoupled; used for redundant sensing or multi-zone thermal monitoring. |
| 9 (IN3+) | Comparator 3 non-inverting input | Third independent comparator input - supports separate reference generation for HVAC blower speed thresholds. |
| 10 (IN4–) | Comparator 4 inverting input | Fourth independent comparator input - enables full quad functionality in compact space-constrained modules like junction boxes. |
| 11 (IN4+) | Comparator 4 non-inverting input | Fourth independent comparator input - allows independent calibration per channel in ADAS sensor fusion applications. |
| 12 (GND) | Negative supply / reference | Return path for all comparators and internal bias - must be connected to system ground; thermal pad (if present) tied to GND. |
| 13 (OUT4) | Comparator 4 output | Open-drain NPN collector - matches OUT1/OUT2/OUT3; supports daisy-chained fault signaling in distributed control units. |
| 14 (OUT3) | Comparator 3 output | Open-drain NPN collector - electrically identical to OUT1; enables parallel output aggregation for OR logic implementation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - eliminates derating concerns in engine bay and powertrain control units. |
| Open-drain outputs | Enables level translation between 3.3 V microcontrollers and 12 V/24 V vehicle buses without additional level-shifters. |
| Input common-mode range includes ground | Supports direct sensing of 0 V-referenced signals (e.g., thermistor dividers, hall-effect sensors) without negative supply rails. |
| Differential input voltage range ±36 V | Withstands transients and load-dump events per ISO 7637-2 without damage - reduces need for external clamping diodes. |
| Low input bias current (25 nA typ) | Minimizes error in high-impedance sensor interfaces such as potentiometer-based pedal position feedback. |
| Functional Safety documentation support | Includes FIT rate data and failure mode analysis - accelerates ASIL-B system-level FMEDA for automotive safety architectures. |
Applications
| HEV/EV Battery Management | Infotainment System Power Sequencing |
|---|---|
|
Use Scenario: Monitoring cell voltage imbalance across 96-cell lithium-ion packs during charging cycles. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous overvoltage/undervoltage checks on grouped cells using precision resistive dividers. Use Value: ±4 mV offset voltage ensures detection of <10 mV deviations critical for cell balancing activation and thermal runaway prevention. |
Use Scenario: Controlling power-up sequence of display, audio processor, and Bluetooth module in digital instrument clusters. IC Role / Device Role / Timing Role: Each comparator monitors individual DC/DC converter outputs and asserts enable signals only after stable regulation. Use Value: 1.3 µs propagation delay guarantees deterministic sequencing within 5 µs windows required by automotive SoCs. |
| Body Control Module (BCM) | Automotive Lighting Control |
|
Use Scenario: Detecting door ajar, hood open, and trunk latch status via magnetic reed switches in harsh underhood environments. IC Role / Device Role / Timing Role: Four comparators interface with isolated switch inputs, providing noise-immune digital status to BCM microcontroller. Use Value: ±2000 V HBM ESD rating prevents field failures from static discharge during vehicle assembly and service operations. |
Use Scenario: Implementing adaptive front-lighting system (AFS) beam height correction based on vehicle pitch angle. IC Role / Device Role / Timing Role: Comparator compares accelerometer-derived analog voltage against calibrated thresholds to trigger servo motor actuation. Use Value: Ground-referenced input range allows direct connection to single-ended sensor outputs without op-amp buffering stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BQDR | Lower ±5.5 mV max offset voltage, 36 V max supply, 2 kV HBM Class 1C ESD - improved accuracy and higher voltage headroom. | Preferred for 48 V mild-hybrid systems and high-precision current-sense amplification paths. | Select LM2901BQDR when supply exceeds 32 V or sub-5 mV offset is required; verify PCB layout accommodates same TSSOP-14 footprint. |
| LM2901QDR | Higher ±15 mV max offset voltage, 30 V max supply, 2 kV HBM Class 2 ESD - cost-optimized variant with relaxed precision. | Suitable for non-safety-critical functions like cabin fan speed indication or ambient light thresholding. | Choose LM2901QDR for cost-sensitive infotainment peripherals where ±15 mV offset is acceptable and supply stays ≤30 V. |
Compared with LM2901AVQDRDL, LM2901BQDR offers tighter offset and wider supply range but requires attention to ESD handling class, while LM2901QDR trades accuracy and voltage margin for lower BOM cost in less demanding subsystems.
Availability
LM2901AVQDRDL is available at Aetrix Electronics and suitable for HEV/EV battery monitoring, automotive infotainment power sequencing, and body control module designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2901AVQDRDL 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The LM2901x-Q1 family was designed specifically for automotive-grade voltage comparison tasks, emphasizing AEC-Q100 compliance, wide supply tolerance, and robustness in electrically noisy vehicle environments.
FAQ
What is the maximum supply voltage rating for LM2901AVQDRDL?
The LM2901AVQDRDL has a maximum supply voltage rating of 32 V, as specified in its Recommended Operating Conditions table. This allows direct integration into 24 V commercial vehicle systems and 12 V passenger car architectures with margin for transient spikes. Operation beyond 32 V risks exceeding absolute maximum ratings and may cause permanent damage to the LM2901AVQDRDL.
Does LM2901AVQDRDL support dual-supply operation?
Yes, LM2901AVQDRDL 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. This configuration enables bipolar signal comparison in automotive sensor interfaces where reference voltages swing above and below ground.
What is the input offset voltage specification for LM2901AVQDRDL over temperature?
The LM2901AVQDRDL has a maximum input offset voltage of ±4 mV over the full AEC-Q100 Grade 1 temperature range of –40°C to +125°C. At 25°C, typical offset is ±1 mV. This tight specification ensures consistent trip-point accuracy in critical applications like battery cell voltage supervision where drift could trigger false fault conditions.
Can LM2901AVQDRDL outputs be wire-OR'd together?
Yes, LM2901AVQDRDL features open-drain outputs that can be directly connected together with a shared pull-up resistor to implement wired-AND logic. This is commonly used in automotive fault-bus architectures where any comparator asserting low indicates a system-level alert condition, simplifying diagnostic signaling without additional logic gates.
Is LM2901AVQDRDL pin-compatible with LM2901QDR or LM2901BQDR?
Yes, LM2901AVQDRDL is pin-compatible with LM2901QDR and LM2901BQDR in the TSSOP-14 package. All three share identical pin numbering, electrical connections, and mechanical footprint. However, differences in offset voltage, supply voltage limits, and ESD classification require validation of system-level performance before substitution.
LM2901AVQDRDL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 32V, ±1V ~ 16V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 300ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM2901AVQDRDL FAQ
1.How can I place an order for LM2901AVQDRDL through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901AVQDRDL 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 LM2901AVQDRDL reliable?
The price and inventory of LM2901AVQDRDL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901AVQDRDL is usually 5 days.
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LM2901AVQDRDL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901AVQDRDL 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 LM2901AVQDRDL?
For technical support, including LM2901AVQDRDL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901AVQDRDL requirements.
6.How does Aetrix verify that LM2901AVQDRDL is sourced from the original manufacturer or authorized distributors?
All LM2901AVQDRDL 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 LM2901AVQDRDL meets industry standards.
7.What is the process for return or replacement of LM2901AVQDRDL?
All LM2901AVQDRDL units undergo pre-shipment inspection (PSI). If there is an issue with LM2901AVQDRDL, 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 LM2901AVQDRDL part is unused and in its original packaging.
Return procedure for LM2901AVQDRDL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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