Diodes Incorporated LM2901AQT14-13

Overview

LM2901AQT14-13 from Diodes Incorporated is a quad differential voltage comparator with A-grade precision (1 mV typical input offset voltage), designed for automotive signal conditioning in single-supply systems from 2 V to 36 V. It features rail-to-rail common-mode input range including ground, 0.9 mA supply current at 5 V, and open-collector outputs compatible with TTL/CMOS logic - deployed in battery monitoring, window comparator circuits, and overvoltage protection modules.

For engineers reviewing the LM2901AQT14-13 datasheet, LM2901AQT14-13 pinout, LM2901AQT14-13 application, or LM2901AQT14-13 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, TSSOP-14 package compatibility, low-input-bias-current PNP input stage, and guaranteed operation across –40°C to +125°C ambient temperature.

Technical Context

This quad comparator uses a PNP-input differential pair architecture enabling common-mode input down to ground and differential input voltage up to 36 V - independent of supply rail. Each channel delivers high DC gain (>50 V/mV) and fast large-signal response (≤300 ns at 100 mV step), with output stage configured as an uncommitted NPN collector for flexible pull-up configuration.

The device operates from single (2–36 V) or dual (±1.0–±18 V) supplies, with supply current invariant over voltage range (0.9 mA typ. at 5 V, ≤2.5 mA max. at 30 V). Input bias current remains stable at 25 nA (typ.), and output saturation voltage is specified at 100 mV (max. at 4 mA sink), supporting precise low-voltage logic interfacing.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, exposed pad optional, RoHS-compliant "green" mold compound, qualified to AEC-Q100 Grade 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2901AQT14-13, LM2901QDR2G trades package compactness for easier assembly and thermal margin, while TLV3704QDRQ1 sacrifices automotive voltage range and robustness for nanoscale power efficiency - making LM2901AQT14-13 the sole choice for AEC-Q100-compliant, wide-supply quad comparison in engine bay or powertrain modules.

Availability

LM2901AQT14-13 is available at Aetrix Electronics and suitable for automotive battery management, engine control unit (ECU) sensor conditioning, and lighting control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM2901AQT14-13 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices for automotive, industrial, and consumer markets, with IATF 16949-certified manufacturing facilities.

The LM2901Q series belongs to Diodes' AEC-Q100-qualified precision analog portfolio, engineered specifically for automotive signal conditioning tasks demanding high reliability, wide supply range, and ground-sensing capability in harsh environments.

FAQ

Can LM2901AQT14-13 operate from a split supply?

Yes - the device supports dual supplies from ±1.0 V to ±18 V. Its PNP input stage and open-collector outputs maintain full functionality with negative rails, enabling bipolar signal comparison in instrumentation or audio subsystems within automotive platforms.

What is the maximum sink current per output?

Each output can sink up to 16 mA continuously while maintaining saturation voltage ≤400 mV (max. over temperature). At 4 mA, saturation voltage is guaranteed ≤100 mV - sufficient to drive standard LED indicators or TTL inputs directly.

Is hysteresis required for stable operation?

Hysteresis is recommended for slow-moving or noisy input signals to prevent output oscillation during transitions. The datasheet confirms that even 1–10 mV of positive feedback eliminates instability caused by stray capacitance between output and inputs on PCB layouts.

How does the input stage handle voltages above V_CC?

The differential input voltage may exceed V_CC up to 36 V without damage. However, input voltages must not fall below –0.3 V (relative to GND or negative rail), requiring external clamping diodes if negative transients are expected in the system.