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Texas Instruments LM2901BIRTER
- Part No.:
- LM2901BIRTER
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
LM2901BIRTER.pdf
- Description:
- 36-V, QUAD DIFFERENTIAL STANDARD
- Quantity:
- Payment:
- Shipping:
Inventory:3,483
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Product details
Overview
LM2901BIRTER from Texas Instruments is an AEC-Q100 Grade 1 qualified quad open-drain voltage comparator for automotive systems, operating from 2 V to 36 V supply, with ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 1 µs typical propagation delay at 5 V. It serves in HEV/EV powertrain monitoring, body control module voltage supervision, and infotainment system level-shifting circuits.
For engineers reviewing the LM2901BIRTER datasheet, LM2901BIRTER pinout, LM2901BIRTER application, or LM2901BIRTER equivalent, this page delivers verified electrical specs, automotive-grade thermal and ESD performance data, functional safety documentation support, and precise pin-level design meaning for layout and interface validation.
Technical Context
The LM2901BIRTER implements a PNP Darlington-pair input stage enabling high DC gain (>200 V/mV), rail-to-rail common-mode input range (down to ground, up to VCC − 2 V), and robust negative input voltage tolerance. Its open-drain NPN output stage supports wired-AND logic, TTL/MOS/CMOS compatibility via external pull-up, and sink currents up to 21 mA per comparator.
It operates across −40°C to +125°C ambient, features 2 kV HBM ESD protection on all pins, and maintains stable quiescent current (0.8–1.6 mA total) independent of supply voltage from 5 V to 36 V - critical for battery-supplied automotive subsystems requiring low-power wake-up detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct connection to 12 V/24 V vehicle batteries and wide-input industrial rails without regulation. |
| Input Offset Voltage (max) | ±5.5 mV over temperature - enables accurate threshold detection in sensor signal conditioning with <1% error at 500 mV reference. |
| Input Bias Current (typ) | 3.5 nA - minimizes loading error on high-impedance sources like thermistor dividers or capacitive sensors. |
| Propagation Delay (typ) | 1 µs at 5 V with 100 mV overdrive - suitable for real-time fault detection in motor control feedback loops and battery cell monitoring. |
| Output Sink Current | 21 mA per comparator - drives standard LED indicators, optocouplers, or logic-level MOSFET gates directly without buffer stages. |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100 Class 2 requirements for robustness against assembly and in-vehicle electrostatic events. |
| Operating Temperature | −40°C to +125°C ambient - certified for under-hood and powertrain applications per AEC-Q100 Grade 1. |
Pinout & Package
TSSOP-14 package (4.40 mm × 5.00 mm), lead-free and RoHS-compliant, optimized for automated SMT assembly and thermal dissipation in compact automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT2) | Comparator 1 output | Open-drain NPN collector - requires external pull-up to define logic HIGH level; sinks current when IN2− > IN2+ + VIO. |
| 2 (OUT1) | Comparator 2 output | Independent open-drain output - enables parallel-wired AND logic or multi-threshold alarm aggregation. |
| 3 (VCC) | Positive supply | Primary power input - accepts 2–36 V; supplies internal bias and output stage; must be decoupled near pin. |
| 4 (IN2−) | Comparator 1 inverting input | Negative input node - accepts signals down to −0.3 V (with clamping); differential range extends to ±36 V. |
| 5 (IN2+) | Comparator 1 non-inverting input | Positive input node - common-mode range includes ground; supports single-supply operation with referenced thresholds. |
| 6 (IN1−) | Comparator 2 inverting input | Second comparator's negative input - electrically identical to Pin 4; channel naming follows TI convention. |
| 7 (IN1+) | Comparator 2 non-inverting input | Second comparator's positive input - used for window comparators or dual-reference sensing schemes. |
| 8 (IN3−) | Comparator 3 inverting input | Third comparator input - enables triple-redundant monitoring or cascaded hysteresis stages. |
| 9 (IN3+) | Comparator 3 non-inverting input | Third comparator reference input - supports independent threshold setting per channel. |
| 10 (IN4−) | Comparator 4 inverting input | Fourth comparator input - allows full quad-channel voltage windowing or sequential state detection. |
| 11 (IN4+) | Comparator 4 non-inverting input | Fourth comparator reference input - completes four independent comparison paths in one IC. |
| 12 (GND) | Negative supply / reference | Return path for supply and inputs - must be low-impedance; connects to exposed thermal pad in WQFN variants. |
| 13 (OUT4) | Comparator 4 output | Final open-drain output - usable for system reset assertion or CAN bus wake-up signaling. |
| 14 (OUT3) | Comparator 3 output | Third open-drain output - supports multi-output logic functions such as priority encoding or voting circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent comparators | Four fully isolated channels in one TSSOP-14 package - reduces BOM count and PCB area vs. discrete solutions. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation with HBM Class 2 and CDM Class C3 - ensures reliability in automotive powertrain and chassis systems. |
| Low input offset voltage (±0.37 mV typ) | Enables sub-millivolt threshold accuracy - critical for precision battery cell voltage monitoring and current-sense amplifier interfaces. |
| 2 kV HBM ESD on all pins | Enhanced robustness during manufacturing and field service - eliminates need for external TVS diodes in many board-level designs. |
| Common-mode input range includes ground | Supports true single-supply operation with grounded references - simplifies sensor interface design in 12 V systems. |
| Open-drain outputs with 21 mA sink capability | Allows flexible logic-level translation (e.g., 3.3 V MCU interfacing to 24 V loads) and wired-AND fault-bus architectures. |
Applications
| HEV/EV Battery Management | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring individual Li-ion cell voltages against overvoltage/undervoltage thresholds in a 400 V traction battery pack. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous 4-cell voltage window checks with <1 µs response, triggering isolation relay control. Use Value: Enables fast, deterministic fault response (<10 µs system latency) while minimizing power consumption (<1.2 mA total IQ) during sleep mode. |
Use Scenario: Supervising door lock actuator supply voltage and detecting open-circuit faults in centralized body electronics units. IC Role / Device Role / Timing Role: LM2901BIRTER compares sensed voltage against 9 V and 16 V thresholds to assert lock/unlock enable and fault flags. Use Value: Eliminates need for external voltage references and op-amps; leverages built-in ground-referenced inputs and open-drain outputs for direct microcontroller GPIO interfacing. |
| Infotainment System Power Sequencing | Engine Control Unit Sensor Interface |
Use Scenario: Validating proper ramp-up sequence of 5 V, 3.3 V, and 1.8 V rails before releasing processor reset in digital cluster head units. IC Role / Device Role / Timing Role: Each comparator monitors one rail with hysteresis; outputs wire-AND into a single reset release signal. Use Value: Ensures reliable power-on reset coordination without FPGA or dedicated PMIC - reduces BoM cost by $0.18/unit. |
Use Scenario: Converting analog oxygen sensor (lambda) output into digital rich/lean indication for closed-loop fuel control in gasoline engines. IC Role / Device Role / Timing Role: LM2901BIRTER compares sensor voltage to 0.45 V reference; output drives ECU interrupt pin with <2 µs jitter. Use Value: Provides deterministic zero-latency decision making with no software overhead; tolerates sensor cable EMI due to 36 V differential input range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901QPWRQ1 | Same SOIC-14 package; higher ±15 mV max offset voltage; 1.3 µs typical propagation delay; 25 nA typical input bias current. | Less suited for precision voltage monitoring below 10 mV thresholds; acceptable for general-purpose window detection. | Select when cost sensitivity outweighs offset and speed requirements; verify layout compatibility with SOIC footprint. |
| TLV3704QDRQ1 | Rail-to-rail input; 1.8 V to 36 V supply; 0.9 mV max offset; 350 nA bias current; 1.2 µs propagation delay; push-pull output. | Requires no pull-up resistors; better for low-voltage MCU interfacing but lacks 36 V differential input tolerance. | Prefer for 3.3 V systems with tight offset budgets; avoid where input may exceed VCC or require ±36 V differential handling. |
Compared with LM2901QPWRQ1 and TLV3704QDRQ1, the LM2901BIRTER uniquely balances ultra-low offset (±0.37 mV), 36 V differential input capability, and AEC-Q100 Grade 1 qualification - making it optimal for high-accuracy, high-voltage automotive sensing where both precision and ruggedness are mandatory.
Availability
LM2901BIRTER is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment power sequencing requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LM2901BIRTER 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 deep expertise in automotive-grade IC design and functional safety compliance.
The LM2901B-Q1 product line delivers AEC-Q100 qualified, high-voltage quad comparators optimized for automotive powertrain, chassis, and infotainment systems demanding precision, reliability, and ESD robustness.
FAQ
What is the maximum supply voltage rating for LM2901BIRTER?
The LM2901BIRTER supports a maximum supply voltage of 36 V, with absolute maximum ratings extending to 38 V for short-duration transients. This allows direct integration into 24 V commercial vehicle systems and 48 V mild-hybrid architectures without external regulators, provided recommended operating conditions (2 V to 36 V) are maintained for sustained operation.
Does LM2901BIRTER support single-supply operation with ground-referenced inputs?
Yes, LM2901BIRTER supports true single-supply operation: its common-mode input voltage range includes ground (V–) and extends up to VCC − 2.0 V over temperature. This enables direct interfacing with sensors and references tied to system ground - essential for cost-sensitive automotive subsystems using unipolar supplies.
What is the typical input offset voltage of LM2901BIRTER and how does it vary with temperature?
The LM2901BIRTER has a typical input offset voltage of ±0.37 mV at 25°C and ±5.5 mV maximum over the full −40°C to +125°C range. Graphs in the datasheet (Figures 5-7 to 5-14) confirm offset drift remains within ±1.5 mV across temperature at fixed supply voltages - critical for maintaining accuracy in engine bay environments.
Can LM2901BIRTER outputs be wire-ANDed, and what is the maximum sink current per output?
Yes, all four outputs are open-drain NPN structures designed for wired-AND configuration. Each output can sink up to 21 mA at 5 V supply (with VOL ≤ 400 mV), supporting direct drive of LEDs, optocouplers, or logic-level MOSFET gates without external buffers - simplifying fault-bus and priority encoder implementations.
Is LM2901BIRTER qualified for functional safety applications?
Yes, LM2901BIRTER is functional safety-capable: Texas Instruments provides documentation including failure mode analysis, FIT rate data, and safety manual support to aid ISO 26262 ASIL-B system design. While the device itself is not ASIL-certified, its architecture and characterization enable use in safety-related monitoring paths when integrated per functional safety requirements.
LM2901BIRTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Differential
- Number of Elements:
- 4
- Output Type:
- Open-Collector, Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V
- :
- 3.5mV @ 5V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 21mA @ 5V
- Current - Output (Typ):
- 1.2mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-WQFN (3x3)
LM2901BIRTER FAQ
1.How can I place an order for LM2901BIRTER through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901BIRTER 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 LM2901BIRTER reliable?
The price and inventory of LM2901BIRTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901BIRTER is usually 5 days.
3.What payment methods are accepted for LM2901BIRTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901BIRTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901BIRTER?
LM2901BIRTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901BIRTER 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 LM2901BIRTER?
For technical support, including LM2901BIRTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901BIRTER requirements.
6.How does Aetrix verify that LM2901BIRTER is sourced from the original manufacturer or authorized distributors?
All LM2901BIRTER 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 LM2901BIRTER meets industry standards.
7.What is the process for return or replacement of LM2901BIRTER?
All LM2901BIRTER units undergo pre-shipment inspection (PSI). If there is an issue with LM2901BIRTER, 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 LM2901BIRTER part is unused and in its original packaging.
Return procedure for LM2901BIRTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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