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Texas Instruments LM2901AVQDR
- Part No.:
- LM2901AVQDR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2901AVQDR.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,083
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Product details
Overview
LM2901AVQDR from Texas Instruments is a quad differential comparator IC designed for single-supply operation across 2 V to 36 V, featuring ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, 1 µs propagation delay, and −40°C to +125°C operating temperature range-used in motor drive fault detection, server PSU overvoltage monitoring, and industrial PLC analog thresholding.
For engineers reviewing the LM2901AVQDR datasheet, LM2901AVQDR pinout, LM2901AVQDR application, or LM2901AVQDR equivalent, this page delivers verified electrical specs, SOIC-14 package details, real-world use cases, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LM2901AVQDR implements four independent open-collector comparators with rail-to-rail input common-mode range extending to ground and up to VCC − 2 V, enabling direct sensing of low-side current shunts and battery voltages. Its internal ESD clamps deliver 2 kV HBM robustness without external protection.
It operates with supply-independent quiescent current and supports TTL/MOS/CMOS-compatible outputs via external pull-up resistors. The device maintains stable propagation delay (1 µs typ) and low output saturation voltage (≤400 mV at 4 mA sink) across its full −40°C to +125°C automotive-grade temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial and automotive power rails without regulation |
| Input Offset Voltage (max) | ±5.5 mV over temp - enables accurate threshold detection in precision voltage monitoring |
| Quiescent Current | 1.2 mA total (0.3 mA/comparator) - reduces standby power in always-on systems |
| Propagation Delay | 1 µs typ at 5 V - suitable for fast-response overcurrent and fault-safety circuits |
| Input Bias Current (max) | 25 nA - minimizes loading error on high-impedance sensor inputs like thermistors |
| Output Sink Current | 21 mA - drives LEDs, relays, or logic gates directly without buffer stages |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 for board-level ESD immunity |
Pinout & Package
LM2901AVQDR is housed in a 14-pin SOIC (D) package measuring 8.70 mm × 3.90 mm, with gull-wing leads and standard JEDEC MS-012AC footprint. Thermal performance: RθJA = 111.2°C/W.
| 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 | Accepts signals down to ground; common-mode range includes V− |
| 3 (IN1+) | Comparator 1 non-inverting input | Supports input up to VCC − 2 V; one input may exceed VCC if other remains in valid range |
| 4 (OUT2) | Comparator 2 output | Independent open-collector output; electrically isolated from OUT1 |
| 5 (IN2−) | Comparator 2 inverting input | Matches IN1− behavior; enables dual-threshold or window-comparator topologies |
| 6 (IN2+) | Comparator 2 non-inverting input | Same voltage range as IN1+; supports rail-to-rail differential input up to ±36 V |
| 7 (VCC) | Positive supply | Single supply pin; powers all four comparators; no separate ground reference needed |
| 8 (GND) | Negative supply / reference | System ground return; common reference for all inputs and outputs |
| 9–14 (IN3±, IN4±, OUT3, OUT4) | Comparator 3 & 4 I/O | Identical functionality to channels 1–2; fully independent for multi-zone monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs at ground or up to VCC − 2 V-eliminates need for level-shifting in low-voltage sensing |
| 2 kV HBM ESD rating | Integrated clamps protect against handling and system-level ESD without added TVS diodes |
| 1 µs propagation delay | Enables sub-microsecond fault response in motor control and UPS transfer switching |
| −40°C to +125°C operation | Qualified for under-hood automotive and industrial ambient environments without derating |
| Open-collector outputs | Allows wired-OR logic, mixed-voltage interfacing (e.g., 3.3 V logic driving 24 V load) |
Applications
| Motor Drive Fault Detection | Server PSU Overvoltage Monitoring |
|---|---|
Use Scenario: Detecting phase current imbalance or DC bus overvoltage in BLDC inverters. IC Role / Device Role / Timing Role: Quad comparator compares sensed currents/voltages against precision references; triggers shutdown within 1 µs. Use Value: Prevents IGBT destruction by responding faster than microcontroller-based protection loops. | Use Scenario: Monitoring +12 V, +5 V, +3.3 V, and standby rails in redundant server power supplies. IC Role / Device Role / Timing Role: Four independent channels supervise each rail with dedicated thresholds and hysteresis. Use Value: Enables autonomous, hardware-level fault isolation without firmware intervention or CPU overhead. |
| Industrial PLC Analog Thresholding | Building Automation HVAC Control |
Use Scenario: Converting 4–20 mA sensor signals into digital status flags for temperature, pressure, and flow. IC Role / Device Role / Timing Role: Compares conditioned analog inputs against programmable resistor-divider thresholds. Use Value: Provides deterministic, jitter-free digital outputs immune to MCU clock drift or interrupt latency. | Use Scenario: Monitoring chilled water temperature, duct static pressure, and CO₂ levels in smart HVAC systems. IC Role / Device Role / Timing Role: Implements multi-point setpoint comparison (e.g., alarm, warning, normal) using cascaded comparators. Use Value: Delivers fail-safe, analog-native control logic that remains operational during microcontroller resets or firmware updates. |
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; identical electrical specs except extended 125°C max junction temperature rating (vs. LM2901AVQDR's 125°C ambient limit) | Valid for higher-temperature PCB layouts where local heating exceeds ambient spec | Select LM2901BQDR when board-level thermal modeling shows junction >125°C under worst-case conditions |
| LM339BDR | SOIC-14; same B-version core but rated for −40°C to +85°C ambient; lower max supply voltage (36 V vs. 36 V) and identical offset/delay specs | Suitable for commercial-grade systems where extended temperature is not required | Choose LM339BDR for cost-sensitive consumer or telecom infrastructure designs with relaxed thermal requirements |
Compared with LM2901AVQDR, LM2901BQDR offers marginally improved thermal headroom for high-power-density boards, while LM339BDR trades ambient temperature range for qualification cost savings-neither is pin-compatible with LM2901AVQDR's A/V-grade screening but shares identical pinout and function.
Availability
LM2901AVQDR is available at Aetrix Electronics and suitable for motor drives, server PSUs, and industrial PLCs requiring stable component supply with guaranteed long-term sourcing and automotive-grade reliability.
Supply support for LM2901AVQDR 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 over 50 years of comparator innovation and automotive qualification expertise.
The LM2901 family was engineered for high-reliability industrial and automotive signal conditioning-specifically targeting analog threshold detection, window comparison, and hardware-based fault response where firmware independence is critical.
FAQ
What is the maximum supply voltage for LM2901AVQDR?
The LM2901AVQDR supports a maximum supply voltage of 36 V across its full operating temperature range. Absolute maximum rating is 38 V, but continuous operation above 36 V violates recommended conditions and risks parametric shift or reliability degradation. This 36 V rating enables direct interface with 24 V industrial buses and 32 V automotive systems without pre-regulation.
Does LM2901AVQDR have rail-to-rail input capability?
Yes, the LM2901AVQDR features rail-to-rail input common-mode range: inputs operate from ground (V−) up to VCC − 2 V. This allows direct connection to low-side current-sense resistors and battery terminals without level-shifting circuitry. Note that exceeding VCC − 2 V on either input may cause incorrect output states, though the device remains undamaged.
What is the typical input offset voltage of LM2901AVQDR?
The LM2901AVQDR has a typical input offset voltage of ±0.37 mV at 25°C and 5 V supply, with a maximum of ±5.5 mV across the full −40°C to +125°C temperature range. This low offset enables accurate voltage window detection in precision power sequencing and sensor signal conditioning applications where <10 mV threshold accuracy is required.
Can LM2901AVQDR outputs drive a 5 V logic input directly?
No-LM2901AVQDR outputs are open-collector and require an external pull-up resistor to the target logic rail (e.g., 5 V). With a properly sized pull-up (e.g., 10 kΩ), the output sinks current to generate a valid LOW and floats to allow the pull-up to define HIGH. Direct connection to 5 V logic without pull-up will result in undefined or weak HIGH states.
Is LM2901AVQDR qualified for automotive applications?
LM2901AVQDR is not AEC-Q100 qualified. It is an industrial-grade part with −40°C to +125°C ambient operating range, but lacks automotive-specific stress testing, failure analysis reporting, and PPAP documentation. For automotive use, TI recommends LM2901B-Q1 (AEC-Q100 Grade 1) or LM2901-Q1 (Grade 2), both of which share the same SOIC-14 footprint and core electrical behavior as LM2901AVQDR.
LM2901AVQDR 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
- :
- 2mV @ 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
LM2901AVQDR FAQ
1.How can I place an order for LM2901AVQDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901AVQDR 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 LM2901AVQDR reliable?
The price and inventory of LM2901AVQDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901AVQDR is usually 5 days.
3.What payment methods are accepted for LM2901AVQDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901AVQDR transactions.
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4.How is shipping managed for LM2901AVQDR?
LM2901AVQDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901AVQDR 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 LM2901AVQDR?
For technical support, including LM2901AVQDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901AVQDR requirements.
6.How does Aetrix verify that LM2901AVQDR is sourced from the original manufacturer or authorized distributors?
All LM2901AVQDR 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 LM2901AVQDR meets industry standards.
7.What is the process for return or replacement of LM2901AVQDR?
All LM2901AVQDR units undergo pre-shipment inspection (PSI). If there is an issue with LM2901AVQDR, 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 LM2901AVQDR part is unused and in its original packaging.
Return procedure for LM2901AVQDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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