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Texas Instruments LM2901AVQDRG4Q1
- Part No.:
- LM2901AVQDRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2901AVQDRG4Q1.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:636
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Product details
Overview
LM2901AVQDRG4Q1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified quad open-drain comparator with 2 V to 32 V supply range, ±4 mV max input offset voltage over temperature, 1.0–2.5 mA total quiescent current, and operation from –40°C to +125°C ambient. It serves as a precision voltage threshold detector in HEV/EV battery monitoring and body control module signal conditioning.
For engineers reviewing the LM2901AVQDRG4Q1 datasheet, LM2901AVQDRG4Q1 pinout, LM2901AVQDRG4Q1 application, or LM2901AVQDRG4Q1 equivalent, key selection criteria include its 32 V max supply rating (vs. 36 V for LM2901B-Q1), Class 1C HBM ESD rating (2 kV), open-drain output compatibility with TTL/MOS/CMOS, and guaranteed performance across automotive temperature extremes.
Technical Context
The LM2901AVQDRG4Q1 implements four independent PNP Darlington-pair input comparators with open-drain NPN outputs. Its input stage supports common-mode voltage from ground to VCC – 2.0 V over full temperature range, enabling direct sensing of low-side current shunts and rail-to-rail reference comparisons.
Each comparator features internal ESD clamps and operates with differential input voltage tolerance up to ±36 V. The output stage sinks up to 4 mA per channel with VOL ≤ 700 mV at 4 mA and 125°C, supporting flexible pull-up configurations for logic-level translation or wired-AND bus interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 32 V - supports direct connection to 12 V and 24 V automotive rails without regulation |
| Input Offset Voltage (max) | ±4 mV over –40°C to +125°C - enables accurate threshold detection in battery voltage monitoring |
| Total Quiescent Current | 1.0–2.5 mA at 5–32 V - ensures low power consumption in always-on vehicle modules |
| Input Bias Current (typ) | 25 nA - minimizes error in high-impedance sensor interface circuits |
| Propagation Delay (typ) | 1.3 µs at 100 mV overdrive - provides responsive fault detection in motor control feedback loops |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100 Class 1C for robustness in automotive assembly and field environments |
| Operating Temperature | –40°C to +125°C ambient - qualified for under-hood and cabin-mounted automotive ECUs |
Pinout & Package
TSSOP-14 package (4.40 mm × 5.00 mm) with exposed thermal pad connected to GND; pin-compatible with SOIC-14 and DYY variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 2 output | Open-drain NPN sink - requires external pull-up for logic-high level translation |
| 2 (OUT2) | Comparator 1 output | Independent open-drain output - enables wired-AND configuration with other comparators |
| 3 (VCC) | Positive supply | Accepts 2–32 V - powers all four comparators and internal bias circuitry |
| 4 (IN2–) | Comparator 1 negative input | Darlington-pair input - supports common-mode down to ground with <25 nA bias current |
| 5 (IN2+) | Comparator 1 positive input | Differential input pair - compares against IN2– with ±4 mV max offset over temperature |
| 6 (IN1–) | Comparator 2 negative input | Electrically identical to IN2– - allows dual-channel threshold comparison from same reference |
| 7 (IN1+) | Comparator 2 positive input | Matches IN2+ pin function - supports parallel signal monitoring with independent thresholds |
| 8 (IN3–) | Comparator 3 negative input | Third independent input pair - extends functionality to multi-zone HVAC or lighting control |
| 9 (IN3+) | Comparator 3 positive input | Enables three-way voltage window detection when used with shared reference |
| 10 (IN4–) | Comparator 4 negative input | Fourth channel input - supports redundancy or diagnostic cross-checking in safety-critical systems |
| 11 (IN4+) | Comparator 4 positive input | Completes quad configuration - allows simultaneous monitoring of battery, load, sensor, and reference |
| 12 (GND) | Negative supply / reference | Return path for all channels - must connect to system ground and thermal pad |
| 13 (OUT4) | Comparator 4 output | Final open-drain output - supports fail-safe shutdown signaling in ASIL-B designs |
| 14 (OUT3) | Comparator 3 output | Third independent output - enables discrete fault flag generation per monitored subsystem |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in automotive powertrain and body electronics |
| Open-drain output architecture | Enables level-shifting to 3.3 V or 5 V logic domains and wired-AND bus arbitration |
| Input common-mode range to ground | Supports direct sensing of low-side current shunts and single-supply sensor interfaces |
| Differential input voltage tolerance ±36 V | Prevents damage during load dump or jump-start transients in 12 V/24 V systems |
| Class 1C HBM ESD protection | 2 kV rating ensures reliability during PCB handling and in-vehicle ESD events |
Applications
| HEV/EV Battery Management | Body Control Module (BCM) |
|---|---|
Use Scenario: Monitoring cell voltage imbalance and pack overvoltage in 400 V traction battery systems using resistive divider networks. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous high-accuracy threshold detection on four voltage rails with ±4 mV offset guarantee. Use Value: Enables early fault detection before BMS thermal runaway thresholds are exceeded, meeting ISO 26262 ASIL-B requirements. | Use Scenario: Controlling door lock actuation, mirror folding, and interior lighting based on switch inputs and ambient light levels. IC Role / Device Role / Timing Role: LM2901AVQDRG4Q1 acts as analog front-end voltage discriminator for mechanical switch debouncing and photodiode signal conditioning. Use Value: Reduces MCU GPIO count by consolidating four independent digital decision points into one TSSOP-14 device with automotive-grade reliability. |
| Infotainment Display Backlight | Power Train Sensor Interface |
Use Scenario: Regulating LED backlight brightness via PWM dimming controlled by ambient light and user-set intensity thresholds. IC Role / Device Role / Timing Role: Comparator channels compare ambient light sensor output against multiple reference voltages to select backlight PWM duty cycle. Use Value: Achieves smooth 4-level dimming response with <1.3 µs propagation delay, eliminating visible flicker during rapid ambient changes. | Use Scenario: Converting analog signals from crankshaft position, camshaft timing, and knock sensors into clean digital pulses for engine control unit input. IC Role / Device Role / Timing Role: LM2901AVQDRG4Q1 conditions noisy inductive sensor outputs with hysteresis-enabled Schmitt-trigger configuration. Use Value: Provides jitter-free edge detection at engine speeds up to 8000 RPM, ensuring precise ignition timing synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BQDRQ1 | 36 V max supply, ±5.5 mV max offset, 2 kV HBM ESD, lower 0.6–0.8 mA quiescent current | Better suited for 36 V battery systems and ultra-low-power always-on modules | Select when higher supply voltage headroom or reduced IQ is required; not drop-in due to different offset spec |
| LM2901VQDRQ1 | 32 V max supply, ±15 mV max offset, 2 kV HBM ESD, 1–2.5 mA IQ, no Class 1C designation | Cost-optimized version for non-safety-critical infotainment peripherals | Choose for price-sensitive applications where ±4 mV offset is not mandatory |
Compared with LM2901BQDRQ1 and LM2901VQDRQ1, LM2901AVQDRG4Q1 delivers tighter offset voltage (±4 mV vs. ±5.5/±15 mV) and AEC-Q100 Class 1C ESD certification-making it optimal for ASIL-B-compliant voltage monitoring where accuracy and robustness are jointly critical.
Availability
LM2901AVQDRG4Q1 is available at Aetrix Electronics and suitable for HEV/EV battery management, body control modules, and infotainment display backlight control requiring stable component supply across automotive production lifecycles.
Supply support for LM2901AVQDRG4Q1 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 specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management ICs.
The LM2901x-Q1 product line delivers AEC-Q100-qualified quad comparators optimized for automotive signal conditioning, fault detection, and voltage monitoring across powertrain, chassis, and body electronics.
FAQ
What is the maximum supply voltage rating for LM2901AVQDRG4Q1?
The LM2901AVQDRG4Q1 has a maximum supply voltage rating of 32 V, as specified in the Recommended Operating Conditions table. This allows direct interface with 24 V automotive systems while maintaining margin below absolute maximum ratings of 36 V. Operation beyond 32 V may violate functional specifications and is not supported across the full –40°C to +125°C temperature range.
Does LM2901AVQDRG4Q1 support rail-to-rail input operation?
No, LM2901AVQDRG4Q1 does not support rail-to-rail input operation. Its common-mode input voltage range extends from ground to VCC – 2.0 V over the full temperature range. While the inputs can tolerate voltages up to VCC (with no damage), accurate comparison requires at least one input to remain within the valid common-mode window; exceeding this range causes output uncertainty and increased input current.
What is the purpose of the exposed thermal pad on the TSSOP-14 package of LM2901AVQDRG4Q1?
The exposed thermal pad on the LM2901AVQDRG4Q1 TSSOP-14 package must be connected directly to the GND net on the PCB. This connection improves thermal dissipation, reduces junction-to-board thermal resistance (RθJB = 43.1°C/W), and stabilizes electrical performance under sustained output sinking conditions. Leaving the pad unconnected degrades thermal performance and may cause premature thermal shutdown in high-current applications.
Can LM2901AVQDRG4Q1 outputs be wire-OR'd together?
Yes, LM2901AVQDRG4Q1 outputs can be wire-OR'd (wired-AND) because each channel features an open-drain NPN output stage. When multiple outputs share a common pull-up resistor to VCC or another logic rail, the combined node goes low if any comparator asserts. This configuration is commonly used for fault-bus signaling in automotive ECUs where any single fault triggers system-wide alert.
How does the input offset voltage of LM2901AVQDRG4Q1 compare to standard LM2901-Q1 variants?
LM2901AVQDRG4Q1 specifies ±4 mV maximum input offset voltage over –40°C to +125°C, which is tighter than standard LM2901-Q1 (±15 mV) and LM2901V-Q1 (±15 mV), but less tight than LM2901B-Q1 (±5.5 mV). This A-grade offset enables higher-precision threshold detection in battery voltage monitoring and sensor signal conditioning where sub-10 mV accuracy is required.
LM2901AVQDRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- 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
- :
- 14-SOIC
LM2901AVQDRG4Q1 FAQ
1.How can I place an order for LM2901AVQDRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901AVQDRG4Q1 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 LM2901AVQDRG4Q1 reliable?
The price and inventory of LM2901AVQDRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901AVQDRG4Q1 is usually 5 days.
3.What payment methods are accepted for LM2901AVQDRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901AVQDRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901AVQDRG4Q1?
LM2901AVQDRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901AVQDRG4Q1 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 LM2901AVQDRG4Q1?
For technical support, including LM2901AVQDRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901AVQDRG4Q1 requirements.
6.How does Aetrix verify that LM2901AVQDRG4Q1 is sourced from the original manufacturer or authorized distributors?
All LM2901AVQDRG4Q1 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 LM2901AVQDRG4Q1 meets industry standards.
7.What is the process for return or replacement of LM2901AVQDRG4Q1?
All LM2901AVQDRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2901AVQDRG4Q1, 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 LM2901AVQDRG4Q1 part is unused and in its original packaging.
Return procedure for LM2901AVQDRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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