Texas Instruments LM2901AVQPWRG4

Overview

LM2901AVQPWRG4 from Texas Instruments is a quad differential comparator IC designed for precision voltage comparison in single-supply systems. It features ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, 1 µs response time, and operates from 2 V to 36 V supply. It is used in server PSU overvoltage protection circuits where rail monitoring requires high accuracy and wide common-mode range.

For engineers reviewing the LM2901AVQPWRG4 datasheet, LM2901AVQPWRG4 pinout, LM2901AVQPWRG4 application, or LM2901AVQPWRG4 equivalent, key selection criteria include guaranteed operation across –40°C to +125°C, compatibility with TTL/MOS/CMOS logic outputs, and support for input voltages up to the supply rail - critical for industrial power supervision and motor control feedback loops.

Technical Context

The LM2901AVQPWRG4 implements four independent open-collector comparators with rail-to-rail input capability - one input may extend to VCC while the other remains within (V–) to (V+) – 2 V. Its internal ESD clamps provide 2 kV HBM robustness, and propagation delay is specified at 1 µs under 5 mV overdrive conditions.

It supports single-supply operation only, with no internal level-shifting circuitry. The output stage sinks up to 21 mA per channel and exhibits low saturation voltage (≤400 mV at 4 mA), enabling direct interface with pull-up resistors to 3.3 V, 5 V, or 12 V logic domains without additional buffering.

Key Specifications

Pinout & Package

TSSOP-14 package (5.00 mm × 4.40 mm body size), thin shrink small-outline package with exposed pad not present; 14-pin surface-mount layout optimized for thermal performance and board space efficiency in dense power management PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2901BQPWR and LM339BQPWR, the LM2901AVQPWRG4 delivers verified A-grade offset performance (±4 mV max) and V-grade qualification (32 V max supply), making it optimal for legacy-replacement scenarios in existing designs where B-version validation is not yet approved.

Availability

LM2901AVQPWRG4 is available at Aetrix Electronics and suitable for server PSU monitoring, vacuum robot motion control, and industrial motor drive enable logic requiring stable component supply across long production lifecycles.

Supply support for LM2901AVQPWRG4 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The LM2901 family is part of TI's precision analog comparator portfolio, engineered for robust single-supply operation in harsh environments including factory automation, power conversion, and motor control systems.

FAQ

What is the maximum supply voltage rating for LM2901AVQPWRG4?

The LM2901AVQPWRG4 has an absolute maximum supply voltage of 38 V, with recommended operating range from 2 V to 32 V. This 32 V upper limit distinguishes it from the B-version (36 V), reflecting its V-suffix qualification for higher-voltage industrial rails. Operation beyond 32 V risks exceeding safe operating area limits and is not supported by TI's characterization data for LM2901AVQPWRG4.

Does LM2901AVQPWRG4 support rail-to-rail input operation?

Yes, the LM2901AVQPWRG4 supports rail-to-rail input operation: either input can swing from ground to within 2 V of VCC without damage or invalid output states. This allows direct connection of sensors referenced to system ground or high-side signals up to VCC, eliminating level-shifters in many single-supply monitoring applications. The common-mode range is explicitly specified as (V–) to (V+) – 2 V.

What is the guaranteed input offset voltage specification for LM2901AVQPWRG4 over temperature?

The LM2901AVQPWRG4 guarantees ±4 mV maximum input offset voltage across its full operating temperature range of –40°C to +125°C. This A-grade specification is tighter than the standard LM2901 (±15 mV) and reflects enhanced laser trimming during manufacturing. At 25°C, typical offset is ±0.37 mV, consistent with the B-version family baseline.

Can LM2901AVQPWRG4 outputs drive CMOS logic directly?

No, LM2901AVQPWRG4 outputs are open-collector and cannot source current; they require external pull-up resistors to interface with CMOS logic. When sinking current, the output pulls low to ≤400 mV at 4 mA, compatible with 3.3 V or 5 V CMOS input thresholds. For direct CMOS driving without pull-ups, a push-pull comparator such as TLV3704 would be required instead.

Is LM2901AVQPWRG4 pin-compatible with LM2901QPWR?

Yes, LM2901AVQPWRG4 is pin-compatible with LM2901QPWR in the TSSOP-14 package: both share identical pin numbering, function mapping, and footprint. The "AV" suffix denotes A-grade offset and V-grade voltage rating (32 V), while retaining mechanical and electrical compatibility. No PCB changes are needed when upgrading from LM2901QPWR to LM2901AVQPWRG4 in existing designs.