Analog Devices Inc./Maxim Integrated MAX9052BEUA+T

Overview

MAX9052BEUA+T from Analog Devices is a dual comparator with integrated 2.500V precision voltage reference, operating from 2.7V to 5.5V supply, consuming only 55µA typical supply current, featuring rail-to-rail inputs/outputs, ±3mV internal hysteresis, and 400ns propagation delay - ideal for low-power battery-operated window comparators and precision level translation.

For engineers reviewing the MAX9052BEUA+T datasheet, MAX9052BEUA+T pinout, MAX9052BEUA+T application, or MAX9052BEUA+T equivalent, this page delivers verified electrical parameters, µMAX-8 package terminal mapping, A-grade vs B-grade reference accuracy trade-offs, and real-world use cases in IR receivers and battery management systems.

Technical Context

The MAX9052BEUA+T integrates two independent comparators sharing a single laser-trimmed 2.500V series-mode voltage reference with curvature correction. Its input stage supports common-mode voltages from VEE −0.25V to VCC +0.25V and exhibits 1.0pA typical input bias current and ±0.5mV typical input offset voltage (A grade) or ±1.0mV (B grade).

The output stage uses a push-pull rail-to-rail design capable of sourcing/sinking up to 8mA, with propagation delay tightly specified at 400ns (100mV overdrive, VCC = 2.7V), and features internal ±3mV hysteresis to prevent chatter on slow-moving signals without external feedback.

Key Specifications

Pinout & Package

MAX9052BEUA+T is housed in an 8-pin µMAX package (pin-compatible with SO-8 but 30% smaller footprint), with exposed pad for thermal enhancement and RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator + reference applications.

Compared with MAX9052AEUA+, the MAX9052BEUA+T trades reference accuracy for lower cost and identical functionality in less demanding industrial monitoring. Against TLV3702IDR, it reduces component count and power by integrating the reference, but sacrifices flexibility in reference selection.

Availability

MAX9052BEUA+T is available at Aetrix Electronics and suitable for battery management systems, IR receivers, window comparators, and digital line receivers requiring stable component supply with guaranteed long-term availability.

Supply support for MAX9052BEUA+T 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX9052BEUA+T belongs to the MAX9038–MAX9053 micropower comparator + reference family, designed specifically for space-constrained, battery-powered applications demanding ultra-low quiescent current and high-accuracy voltage references.

FAQ

What is the reference voltage tolerance and temperature coefficient of the MAX9052BEUA+T?

The MAX9052BEUA+T features a 2.500V precision reference with ±1.0% initial accuracy (B grade) and a typical temperature coefficient of 100ppm/°C over −40°C to +85°C. This specification ensures predictable drift behavior in industrial environments where ambient temperature varies widely, and supports reliable threshold setting in battery voltage monitoring circuits using the MAX9052BEUA+T.

Can the MAX9052BEUA+T operate from a 3.0V supply, and what is its supply current at that voltage?

Yes, the MAX9052BEUA+T operates from 2.7V to 5.5V, making 3.0V fully compliant. At VCC = 3.0V, its typical supply current is 55µA - identical to the 2.7V spec - enabling consistent ultra-low-power operation across the full valid supply range. This stability is critical for designs powered by aging batteries where voltage sags below nominal levels, and confirms robust functionality of the MAX9052BEUA+T under real-world conditions.

Does the MAX9052BEUA+T require an external capacitor on the REF pin for stability?

No, the MAX9052BEUA+T is internally compensated and stable with 0–4.7nF capacitive loads on the REF pin. An external capacitor is optional and recommended only in applications subject to step-load transients (e.g., sudden current draw by downstream circuitry), where it reduces overshoot/undershoot. For static reference use - such as biasing comparators in a MAX9052BEUA+T-based window detector - no capacitor is needed, simplifying layout and reducing BOM count.

How does the internal hysteresis of the MAX9052BEUA+T improve noise immunity?

The MAX9052BEUA+T incorporates ±3mV internal hysteresis, creating a 6mV dead band between rising and falling trip points. This prevents output oscillation when input signals hover near the threshold due to noise or slow slew rates - common in thermistor or photodiode interfaces. Unlike external hysteresis networks, this feature requires no additional resistors, saves PCB area, and maintains consistent performance across temperature, enhancing reliability of the MAX9052BEUA+T in noisy industrial environments.

What is the maximum capacitive load the MAX9052BEUA+T outputs can drive while maintaining 400ns propagation delay?

The MAX9052BEUA+T maintains its 400ns propagation delay (100mV overdrive, VCC = 2.7V) with capacitive loads up to 50pF, as confirmed in the Typical Operating Characteristics (Figure MAX9038 toc10). Loads exceeding 50pF increase delay nonlinearly - e.g., 200pF raises tPD to ~650ns. For high-speed applications like digital line reception, keep trace + MCU input capacitance ≤50pF; for slower monitoring tasks, the MAX9052BEUA+T tolerates up to 200pF with acceptable timing margin.