Texas Instruments LM2901AVQDRQ1

Overview

LM2901AVQDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified quad open-drain automotive comparator with 2 V to 32 V supply range, ±4 mV max input offset voltage over temperature, 3.5 nA typical input bias current, and 1.3 µs typical propagation delay. It operates in HEV/EV powertrain and body control modules where precision voltage comparison under wide temperature and supply variation is required.

For engineers reviewing the LM2901AVQDRQ1 datasheet, LM2901AVQDRQ1 pinout, LM2901AVQDRQ1 application, or LM2901AVQDRQ1 equivalent, key selection criteria include its 32 V max supply rating (vs. 36 V for B-version), Class 1C HBM ESD rating, TSSOP-14 package compatibility, and guaranteed operation from –40°C to +125°C ambient.

Technical Context

The LM2901AVQDRQ1 implements four independent PNP Darlington-pair input comparators with open-drain NPN outputs, enabling wired-AND logic and flexible level shifting. Its input common-mode range extends from ground to VCC – 2 V across temperature, supporting direct sensing of low-side current shunts and battery monitoring.

Unlike the LM2901B-Q1, the "AV" variant features enhanced negative input voltage handling and Class 1C (±2 kV) HBM ESD protection-critical for infotainment and cluster applications exposed to human contact-while maintaining identical pinout and functional behavior with LM2901-Q1 and LM2901V-Q1 families.

Key Specifications

Pinout & Package

TSSOP-14 package (4.40 mm × 5.00 mm), thermally enhanced for automotive PCB layouts with tight spacing constraints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad comparator applications.

Compared with LM2901BQDRQ1 and LM2901VQDRQ1, LM2901AVQDRQ1 delivers the optimal balance of 32 V capability, ±4 mV precision, and Class 1C ESD robustness-making it the preferred choice for infotainment, cluster, and mid-tier powertrain sensing where both accuracy and reliability are mandated.

Availability

LM2901AVQDRQ1 is available at Aetrix Electronics and suitable for automotive HEV/EV battery management, instrument cluster display drivers, and 12 V power distribution units requiring stable component supply across extended temperature and voltage ranges.

Supply support for LM2901AVQDRQ1 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 AEC-Q100 qualification.

The LM2901x-Q1 product line was engineered specifically for automotive voltage monitoring and fault detection applications, delivering robust performance in harsh environments while maintaining pin compatibility across variants for design flexibility.

FAQ

What is the maximum supply voltage rating for LM2901AVQDRQ1?

The LM2901AVQDRQ1 has a maximum supply voltage rating of 32 V, as specified in the Recommended Operating Conditions table. This allows reliable operation in 24 V nominal automotive systems with transient overvoltage margins, but it is not rated for 36 V operation like the LM2901B-Q1 variant. Exceeding 32 V may cause permanent damage or parametric shift.

Does LM2901AVQDRQ1 support ground-referenced input signals?

Yes, LM2901AVQDRQ1 supports ground-referenced inputs: its common-mode input voltage range extends down to ground (V–) across the full –40°C to +125°C temperature range. This enables direct connection to low-side current sense resistors and battery shunt monitors without level-shifting circuitry, simplifying PCB layout and reducing component count.

What is the ESD classification for LM2901AVQDRQ1?

LM2901AVQDRQ1 is classified as Class 1C per AEC-Q100-002, with a Human-Body Model (HBM) ESD rating of ±2000 V. This classification reflects enhanced protection for applications involving frequent human interaction, such as infotainment control panels and digital instrument clusters, where electrostatic discharge risk is elevated during assembly or service.

Can LM2901AVQDRQ1 outputs be wire-OR'd together?

Yes, LM2901AVQDRQ1 features open-drain outputs that can be safely connected together with a shared pull-up resistor to implement wired-AND logic. This configuration is commonly used in fault-bus architectures-for example, aggregating overvoltage, overtemperature, and short-circuit alerts into a single interrupt line to an MCU-without risk of output contention or latch-up.

How does LM2901AVQDRQ1 differ from LM2901QDRQ1 in performance?

LM2901AVQDRQ1 improves upon LM2901QDRQ1 with tighter input offset voltage (±4 mV max vs. ±15 mV max), lower input bias current (25 nA typ vs. 250 nA typ), and Class 1C HBM ESD rating (vs. Class 2). These enhancements make LM2901AVQDRQ1 suitable for higher-precision automotive sensing tasks where signal fidelity and interface robustness are critical.