Analog Devices Inc./Maxim Integrated MAX4402AUA+T

Overview

MAX4402AUA+T from Maxim Integrated is a dual, rail-to-rail output operational amplifier optimized for single-supply operation from +2.5V to +5.5V, drawing only 320µA per amplifier, delivering ±1.4mA output current, and featuring unity-gain stability with up to 400pF capacitive loads - widely deployed in automotive sensor signal conditioning and portable communications front-ends.

For engineers reviewing the MAX4402AUA+T datasheet, MAX4402AUA+T pinout, MAX4402AUA+T application, or MAX4402AUA+T equivalent, key selection criteria include its AEC-Q100 qualification (for /V+ variants), 8-pin µMAX package footprint, 1MHz gain-bandwidth product, 110dB open-loop gain at 2kΩ load, and ground-sensing input architecture enabling true single-supply zero-crossing detection.

Technical Context

The MAX4402AUA+T implements a CMOS input stage with ground-sensing capability, allowing input common-mode voltage down to VSS, and a rail-to-rail output stage capable of swinging within 55mV of both supply rails under 2kΩ load. Its 1MHz gain-bandwidth product and 70° phase margin ensure stable unity-gain operation even with 400pF capacitive loads.

No shutdown function is integrated - unlike the MAX4401 - and the device operates exclusively as a dual-channel amplifier with independent IN+/IN−/OUT pairs per channel. It is specified across –40°C to +125°C and qualified per AEC-Q100 only in /V+ variants (e.g., MAX4402AUA/V+T), not the standard MAX4402AUA+T.

Key Specifications

Pinout & Package

The MAX4402AUA+T is housed in an 8-pin µMAX package (package code U8+1), measuring 3mm × 3mm × 0.8mm, 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 op amp applications.

Compared with LMV358IDR and MCP6022-E/SN, the MAX4402AUA+T uniquely balances ultra-low quiescent current, full automotive temperature range, rail-to-rail output, and ground-sensing inputs - making it optimal for space-constrained, battery-sensitive, and thermally harsh dual-amplifier roles.

Availability

MAX4402AUA+T is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable IR receivers, industrial zero-crossing detectors, and electronic ignition modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4402AUA+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

Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.

The MAX4400–MAX4403 family was engineered to deliver rail-to-rail performance, ultra-low power, and robust temperature operation in compact packages - targeting cost-sensitive, space-constrained, and thermally aggressive signal-conditioning roles.

FAQ

What is the maximum capacitive load the MAX4402AUA+T can drive while remaining stable?

The MAX4402AUA+T is unity-gain stable with capacitive loads up to 400pF, as confirmed in the Electrical Characteristics table and Typical Operating Characteristics (Figure 19). This eliminates the need for output isolation resistors in most PCB trace- or connector-driven applications, simplifying layout and preserving signal integrity without sacrificing stability.

Does the MAX4402AUA+T include a shutdown feature?

No, the MAX4402AUA+T does not include a shutdown feature. Shutdown functionality is exclusive to the MAX4401 (single-channel, 6-pin SC70). The MAX4402AUA+T is a dual-channel amplifier with no SHDN pin - all pins are dedicated to signal I/O and power. Power reduction must be achieved externally via supply gating.

Is the MAX4402AUA+T qualified for automotive applications?

The standard MAX4402AUA+T is not AEC-Q100 qualified. Only the /V+ variant - specifically MAX4402AUA/V+T - carries AEC-Q100 qualification for automotive use. The MAX4402AUA+T shares the same electrical specifications and 125°C operating range but lacks the automotive stress-test validation required for powertrain or safety-critical body electronics.

What is the input common-mode voltage range of the MAX4402AUA+T?

The MAX4402AUA+T features ground-sensing inputs with an input common-mode voltage range extending from VSS to VDD − 1.4V (at +25°C) and VDD − 1.5V (over full temperature range). This allows direct interfacing with 0V-referenced sensors such as thermistors, RTDs, and bridge transducers without level-shifting circuitry.

What package type and dimensions does the MAX4402AUA+T use?

The MAX4402AUA+T uses the 8-pin µMAX package (outline number 21-0036), measuring 3.0mm × 3.0mm × 0.8mm with an exposed thermal pad. Its land pattern (90-0092) supports four-layer board thermal resistance of θ_JA = 206.3°C/W, enabling reliable operation at full 125°C ambient when properly soldered and heatsinked.