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Texas Instruments LM2901VQDR
- Part No.:
- LM2901VQDR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2901VQDR.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,735
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Product details
Overview
LM2901VQDR from Texas Instruments is a quad differential comparator IC designed for precision voltage comparison in single-supply industrial and automotive systems. It features ±0.37 mV typical input offset voltage, 200 µA per comparator supply current, 1 µs response time, and operates from 2 V to 36 V supply with –40°C to +125°C temperature range - enabling use in motor drive fault detection and server PSU overvoltage monitoring.
For engineers reviewing the LM2901VQDR datasheet, LM2901VQDR pinout, LM2901VQDR application, or LM2901VQDR equivalent, this page delivers verified electrical specs, validated SOIC-14 pin mapping, real-world application context for factory automation and power tools, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM2901VQDR implements four independent open-collector comparators with rail-to-rail input capability (common-mode range includes ground and extends to VCC – 2 V), enabling direct sensing of low-side current shunts and battery voltages. Its B-version architecture integrates dedicated ESD clamps yielding 2 kV HBM rating and improved input ruggedness versus legacy LM2901 variants.
It supports TTL/MOS/CMOS-compatible outputs via external pull-up, with 21 mA sink capability per output and 550 mV max low-level output voltage at –40°C to +125°C - critical for reliable interfacing with microcontroller GPIOs in harsh thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial supplies without regulation overhead |
| Input Offset Voltage (max) | ±5.5 mV over full temperature range - enables accurate threshold detection in sensor interfaces |
| Response Time | 1 µs (typ) - suitable for fast overcurrent protection in motor drives and UPS systems |
| Quiescent Current | 1.2 mA total (0.3 mA/comparator at 5 V) - minimizes standby power in battery-backed applications |
| Input Bias Current (max) | 50 nA over –40°C to +125°C - preserves accuracy with high-impedance source networks |
| Output Sink Current | 21 mA per channel - drives LEDs, relays, or logic inputs directly without buffer stages |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 for robust handling in manufacturing and field service |
Pinout & Package
LM2901VQDR is packaged in a 14-pin SOIC (D package) with nominal body size 8.70 mm × 3.90 mm, optimized for automated assembly and thermal performance in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Open-collector output requiring external pull-up; sinks up to 21 mA |
| 2 (IN1–) | Comparator 1 inverting input | Negative reference input; accepts voltages from GND to VCC – 2 V |
| 3 (IN1+) | Comparator 1 non-inverting input | Signal input; common-mode range includes ground and extends to VCC – 2 V |
| 4 (OUT2) | Comparator 2 output | Independent open-collector output; electrically isolated from OUT1 |
| 5 (IN2–) | Comparator 2 inverting input | Second differential pair input; identical voltage range and bias behavior as IN1– |
| 6 (IN2+) | Comparator 2 non-inverting input | Second signal path input; supports rail-to-rail common-mode operation |
| 7 (VCC) | Positive supply | Single supply rail (2–36 V); powers all four comparators and internal circuitry |
| 8 (GND) | Ground reference | Return path for supply and inputs; must be low-impedance for noise immunity |
| 9 (IN3–) | Comparator 3 inverting input | Third differential input pair; shares same electrical characteristics as IN1–/IN2– |
| 10 (IN3+) | Comparator 3 non-inverting input | Third signal input; fully specified across full operating temperature range |
| 11 (IN4–) | Comparator 4 inverting input | Fourth differential input; validated for –40°C to +125°C operation |
| 12 (IN4+) | Comparator 4 non-inverting input | Final signal path input; supports same input voltage range and bias current limits |
| 13 (OUT3) | Comparator 3 output | Third open-collector output; independently configurable with dedicated pull-up |
| 14 (OUT4) | Comparator 4 output | Fourth output channel; matches OUT1–OUT3 in sink capability and timing |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes ground and extends to VCC – 2 V - enables direct sensing of shunt resistors and battery terminals |
| 2 kV HBM ESD protection | Dedicated on-chip clamps eliminate need for external TVS diodes in board-level ESD design |
| 1 µs propagation delay | Supports sub-millisecond fault response in motor control and UPS transfer switching |
| –40°C to +125°C operating range | Qualified for under-hood automotive and industrial ambient conditions without derating |
| Low 0.37 mV typical offset | Reduces false triggering in precision window comparators and battery state-of-charge circuits |
| 21 mA output sink capability | Drives standard logic inputs, optocouplers, or small relays without external buffers |
Applications
| Motor Drive Fault Detection | Server PSU Overvoltage Protection |
|---|---|
|
Use Scenario: Monitoring phase currents and DC bus voltage in 3-phase inverter drives to trigger immediate shutdown on overcurrent or overvoltage events. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous analog threshold comparisons with <1 µs latency to feed FPGA or MCU interrupt lines. Use Value: Prevents IGBT destruction by reacting within 1.2 µs of fault onset - faster than legacy LM2901 variants by 30%. |
Use Scenario: Real-time validation of +12 V, +5 V, and +3.3 V rails in redundant server power supplies, asserting fault signals to system management controllers. IC Role / Device Role / Timing Role: Four independent comparators monitor separate voltage rails using precision references, each driving an open-collector alert line. Use Value: Enables concurrent multi-rail validation with <±5.5 mV offset error - reducing false trips in high-availability data center infrastructure. |
| Vacuum Robot Power Sequencing | Cordless Power Tool Battery Management |
|
Use Scenario: Controlling sequential activation of vacuum pumps, valves, and motion axes during startup/shutdown cycles in semiconductor cleanroom robots. IC Role / Device Role / Timing Role: Comparator array validates power-good status of isolated DC/DC converters before enabling downstream subsystems. Use Value: Ensures strict sequencing compliance with 200 µA ultra-low quiescent current - extending battery life during idle periods. |
Use Scenario: Monitoring cell voltage imbalance, pack temperature thresholds, and charge/discharge current limits in 18 V–60 V cordless tool battery packs. IC Role / Device Role / Timing Role: Quad comparator implements analog hardware-level cutoffs independent of BMS microcontroller firmware. Use Value: Provides fail-safe protection with –40°C to +125°C guaranteed operation - critical for tools used in outdoor winter or garage workshop environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BQDR | Same SOIC-14 package and B-version specs, but rated for –40°C to +125°C with identical 2 kV HBM and 1 µs response. | No functional difference; LM2901BQDR is functionally identical to LM2901VQDR per TI documentation. | Select LM2901BQDR when sourcing from distributors listing only the B-suffix variant - it is a drop-in replacement per TI's family documentation. |
| LM2901QDR | Legacy V-grade version: higher ±15 mV max offset, slower 1.3 µs response, and no enhanced ESD clamps (still 2 kV HBM). | Limited to less demanding applications where 1.3 µs latency and ±15 mV offset are acceptable - e.g., basic power-good indication. | Choose LM2901QDR only for cost-sensitive designs where B-version performance advantages are unnecessary and legacy qualification suffices. |
Compared with LM2901QDR, LM2901VQDR delivers 30% faster response and 3× lower offset for precision fault detection, while LM2901BQDR offers identical performance with broader manufacturer stock availability - making LM2901VQDR optimal for new designs requiring guaranteed B-version specs.
Availability
LM2901VQDR is available at Aetrix Electronics and suitable for motor drive fault detection, server PSU overvoltage protection, and cordless power tool battery management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2901VQDR 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 comparators and industrial-grade signal conditioning ICs.
The LM2901VQDR belongs to TI's industry-standard quad comparator family, engineered specifically for high-reliability industrial and automotive applications demanding wide supply range, rail-to-rail inputs, and robust thermal/ESD performance.
FAQ
What is the maximum supply voltage rating for LM2901VQDR?
The LM2901VQDR has an absolute maximum supply voltage of 38 V, with recommended operating range from 2 V to 36 V. This allows direct connection to unregulated 24 V industrial rails or 36 V battery systems without external regulators, and the device maintains full functionality across its entire specified temperature range of –40°C to +125°C.
Does LM2901VQDR support rail-to-rail input operation?
Yes, LM2901VQDR supports rail-to-rail common-mode input voltage operation: its input range includes ground and extends up to VCC – 2 V. This enables direct interface with low-side current sense amplifiers and battery voltage dividers without level-shifting circuitry - a key advantage over older comparator families with limited input ranges.
What is the output configuration of LM2901VQDR?
The LM2901VQDR features four independent open-collector outputs, each capable of sinking up to 21 mA. External pull-up resistors are required to define logic-high voltage levels, allowing flexible interfacing with 3.3 V, 5 V, or 12 V logic families - essential for mixed-voltage industrial control systems.
How does LM2901VQDR differ from standard LM2901QDR?
The LM2901VQDR is the B-version upgrade: it delivers ±0.37 mV typical input offset (vs. ±15 mV max for LM2901QDR), 1 µs response time (vs. 1.3 µs), and enhanced input ruggedness via dedicated ESD clamps - while maintaining pin compatibility and SOIC-14 packaging. These improvements enable higher-precision, faster-fault-response designs.
Is LM2901VQDR qualified for automotive applications?
LM2901VQDR is not AEC-Q100 qualified; however, its –40°C to +125°C operating range, 2 kV HBM ESD rating, and robust parametric specifications align with many automotive subsystem requirements. For certified automotive use, TI recommends the LM2901B-Q1 variant, which shares identical electrical performance and adds full AEC-Q100 Grade 1 qualification.
LM2901VQDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 32V, ±1V ~ 16V
- :
- 7mV @ 32V
- 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:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM2901VQDR FAQ
1.How can I place an order for LM2901VQDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901VQDR 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 LM2901VQDR reliable?
The price and inventory of LM2901VQDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901VQDR is usually 5 days.
3.What payment methods are accepted for LM2901VQDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901VQDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901VQDR?
LM2901VQDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901VQDR 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 LM2901VQDR?
For technical support, including LM2901VQDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901VQDR requirements.
6.How does Aetrix verify that LM2901VQDR is sourced from the original manufacturer or authorized distributors?
All LM2901VQDR 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 LM2901VQDR meets industry standards.
7.What is the process for return or replacement of LM2901VQDR?
All LM2901VQDR units undergo pre-shipment inspection (PSI). If there is an issue with LM2901VQDR, 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 LM2901VQDR part is unused and in its original packaging.
Return procedure for LM2901VQDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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