Analog Devices Inc./Maxim Integrated MAX9052AEUA-T

Overview

MAX9052AEUA-T from Analog Devices is a dual comparator with integrated 2.500V precision voltage reference in an 8-pin µMAX package, consuming only 55µA supply current at 2.7V. It features rail-to-rail inputs (extending 250mV beyond rails), ±3mV internal hysteresis, 400ns propagation delay, and push-pull outputs sourcing/sinking up to 8mA - ideal for low-power battery management and window detection circuits.

For engineers reviewing the MAX9052AEUA-T datasheet, MAX9052AEUA-T pinout, MAX9052AEUA-T application, or MAX9052AEUA-T equivalent, key selection criteria include its A-grade reference accuracy (±0.4% initial, 6ppm/°C tempco), dual-comparator architecture with independent IN+ pins, stable operation with up to 4.7nF REF load capacitance, and compatibility with 2.7V–5.5V single-supply systems.

Technical Context

The MAX9052AEUA-T integrates two independent comparators sharing one precision 2.500V reference, each with rail-to-rail input stage (CMVR = VEE −0.25V to VCC +0.25V) and push-pull output capable of 8mA drive. Input bias current is typically 1.0pA, offset voltage ±0.5mV (typ), and common-mode rejection ratio ≥52dB.

Its reference uses laser-trimmed thin-film resistors and curvature-correction circuitry, delivering ±0.4% initial accuracy (A grade), 6ppm/°C temperature coefficient, <100µV/V line regulation, and stability with 0–4.7nF capacitive loads - enabling direct use in precision thresholding without external compensation.

Key Specifications

Pinout & Package

The MAX9052AEUA-T is housed in an 8-pin µMAX package (5.0mm × 3.0mm, 0.8mm height), RoHS-compliant, with exposed paddle for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9052BEUA, the MAX9052AEUA-T offers tighter reference accuracy and lower tempco for stable thresholds across temperature; versus TLV3702IDR, it eliminates external reference components and reduces total solution current by 25µA, simplifying layout and improving power efficiency.

Availability

MAX9052AEUA-T is available at Aetrix Electronics and suitable for precision battery management, window comparator circuits, IR receiver front-ends, and level translation applications requiring stable component supply and guaranteed long-term availability.

Supply support for MAX9052AEUA-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 consumer markets.

The MAX9052AEUA-T belongs to the MAX9038–MAX9053 micropower comparator + reference family, designed specifically for space- and power-constrained applications requiring precision threshold detection without external references or complex support circuitry.

FAQ

What is the reference voltage accuracy and temperature coefficient of the MAX9052AEUA-T?

The MAX9052AEUA-T features an A-grade 2.500V reference with ±0.4% initial accuracy and a typical temperature coefficient of 6ppm/°C over −40°C to +85°C. This specification is guaranteed by design and confirmed in the Electrical Characteristics table for A-grade devices. The MAX9052AEUA-T maintains this performance without requiring external calibration or trimming components.

Does the MAX9052AEUA-T support rail-to-rail input operation, and what is its common-mode range?

Yes, the MAX9052AEUA-T supports rail-to-rail input operation with a common-mode voltage range extending from VEE −0.25V to VCC +0.25V. This allows input signals to exceed the supply rails by 250mV while maintaining specified performance, enabling robust interfacing with sensors or signals operating outside the nominal supply domain. The input bias current remains below 10pA within this extended range.

What is the maximum capacitive load supported on the REF pin of the MAX9052AEUA-T?

The MAX9052AEUA-T REF pin is stable with capacitive loads from 0 to 4.7nF, as explicitly stated in the Electrical Characteristics table under "Capacitive-Load Stability Range." This allows designers to place a local 100nF ceramic capacitor directly on the REF pin for noise filtering without risk of oscillation - a key advantage over many competing reference-integrated comparators that require strict zero-capacitance conditions.

How does the MAX9052AEUA-T minimize supply current surges during output switching?

The MAX9052AEUA-T employs a unique output stage design that limits supply current transients during switching, virtually eliminating supply rail glitches common in other comparators. As shown in Typical Operating Characteristics (Figure MAX9038 toc13/toc14), ICC spikes remain below 1mA even during fast edges. This reduces or eliminates the need for large local bypass capacitors, simplifying power delivery network design in space-constrained applications.

Can the MAX9052AEUA-T be used in window comparator configurations, and how are the two comparators configured?

Yes, the MAX9052AEUA-T is expressly suited for window comparator use. Comparator A (INA+, OUTA) and Comparator B (INB+, OUTB) operate independently, sharing only the 2.500V REF output. To implement a window, connect REF to one comparator's IN− (e.g., via resistor divider for upper threshold) and to the other's IN+ (for lower threshold), enabling precise 2.5V-centered detection without external references. Pin configuration data confirms independent IN+ and IN− terminals for both comparators.