Analog Devices Inc./Maxim Integrated MAX9038EBT+T

Overview

The MAX9038EBT+T from Analog Devices is a micropower, single-supply comparator with integrated 1.23V precision voltage reference in a 6-bump UCSP package. It features rail-to-rail inputs, open-drain output sinking up to 8mA, 400ns propagation delay, ±0.4% reference accuracy (A grade), and 40μA supply current - ideal for low-power battery management and level translation in space-constrained portable systems.

For engineers reviewing the MAX9038EBT+T datasheet, MAX9038EBT+T pinout, MAX9038EBT+T application, or MAX9038EBT+T equivalent, key selection factors include its open-drain output topology, 1.23V reference voltage, UCSP-6 footprint compatibility, -40°C to +85°C operating range, and verified performance under 2.5V–5.5V single-supply operation.

Technical Context

The MAX9038EBT+T integrates a single comparator with internal ±3mV hysteresis and a laser-trimmed series-mode voltage reference. Its input common-mode range extends 250mV beyond both rails (VEE − 0.25V to VCC + 0.25V), enabling robust sensing near supply boundaries. Input bias current is typically 1.0pA, and offset voltage is ±0.5mV (typ) over temperature.

The open-drain output supports logic-level translation via external pull-up, while the reference delivers stable 1.23V with 6ppm/°C tempco (A grade) and supports capacitive loads up to 4.7nF without instability. Supply current remains constant at 40μA across temperature and switching frequency, minimizing dynamic power penalties.

Key Specifications

Pinout & Package

The MAX9038EBT+T is housed in a 6-bump ultra-thin chip-scale package (UCSP), measuring 1.5mm × 1.5mm × 0.5mm, with solder bumps on the bottom side. This RoHS-compliant, lead-free package supports fine-pitch PCB assembly and offers excellent thermal performance for compact battery-powered designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9039EBT+T, the MAX9038EBT+T offers identical performance and pin compatibility, making it a direct functional match; versus TLV4041DBVR, the MAX9038EBT+T delivers superior reference accuracy (±0.4% vs. ±1.5%), lower quiescent current (40μA vs. 65μA), and faster response (400ns vs. 550ns), justifying its use in high-precision, ultra-low-power applications.

Availability

The MAX9038EBT+T is available at Aetrix Electronics and suitable for precision battery management, IR receivers, level translators, and window comparators requiring stable component supply across industrial and portable electronics programs.

Supply support for MAX9038EBT+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 MAX9038–MAX9053 family was designed specifically for micropower, single-supply systems requiring integrated precision references and rail-to-rail comparators - targeting battery-operated instrumentation, portable medical devices, and energy-harvesting sensors.

FAQ

What is the reference voltage accuracy and temperature coefficient of the MAX9038EBT+T?

The MAX9038EBT+T features a 1.23V precision voltage reference with ±0.4% initial accuracy (A grade) and a typical temperature coefficient of 6ppm/°C. These specifications are guaranteed over the full -40°C to +85°C operating range and enable high-accuracy threshold generation in battery monitoring and sensor interface applications without external calibration.

Does the MAX9038EBT+T support rail-to-rail input and output operation?

Yes, the MAX9038EBT+T supports rail-to-rail inputs with a common-mode range extending 250mV beyond both supply rails (VEE − 0.25V to VCC + 0.25V). Its output is open-drain, allowing rail-to-rail logic-level translation when paired with an external pull-up resistor - though the output itself does not source current.

What is the maximum capacitive load the MAX9038EBT+T reference output can drive?

The MAX9038EBT+T reference output is stable with capacitive loads up to 4.7nF, per manufacturer characterization. No output capacitor is required for stability, but adding one (e.g., 100nF) improves transient response during step-load changes - particularly useful in systems with intermittent reference loading or noisy supplies.

Can the MAX9038EBT+T be used in a dual-comparator configuration?

No - the MAX9038EBT+T contains only one comparator. For dual-comparator functionality with the same 1.23V reference, consider the MAX9042/MAX9043 (2.048V ref) or MAX9052/MAX9053 (2.500V ref) families. The MAX9038EBT+T is strictly a single-comparator + reference device optimized for minimal size and current in space-constrained applications.

What package type and dimensions does the MAX9038EBT+T use?

The MAX9038EBT+T uses a 6-bump ultra-thin chip-scale package (UCSP) measuring 1.5mm × 1.5mm × 0.5mm, with solder bumps on the bottom surface. It is RoHS-compliant, lead-free, and designed for fine-pitch reflow assembly - ideal for ultra-compact wearable and implantable electronics where board area is at a premium.