Analog Devices Inc./Maxim Integrated MAX4402AUA/V+

Overview

MAX4402AUA/V+ from Maxim Integrated is a dual, rail-to-rail output operational amplifier designed for automotive and industrial signal conditioning in single-supply systems. It operates from +2.5V to +5.5V, draws 320µA per amplifier, delivers ±1.4mA output current, features 1MHz gain-bandwidth, and is AEC-Q100 qualified for use in engine control units and sensor interfaces.

For engineers reviewing the MAX4402AUA/V+ datasheet, MAX4402AUA/V+ pinout, MAX4402AUA/V+ application, or MAX4402AUA/V+ equivalent, key selection criteria include its 8-pin µMAX package, -40°C to +125°C operation, rail-to-rail output swing within 55mV of rails at 2kΩ load, unity-gain stability up to 400pF capacitive load, and ground-sensing inputs enabling low-side current sensing.

Technical Context

The MAX4402AUA/V+ integrates two independent amplifiers in a single monolithic die with matched input bias currents (±0.1pA typ), high open-loop gain (110dB at 2kΩ load), and low THD (0.015% at 10kHz with 2kΩ load). Its input common-mode range extends from VSS to VDD – 1.4V, supporting ground-referenced inputs in single-supply configurations.

It uses a CMOS input stage with 1000GΩ input resistance and achieves 70° phase margin at unity gain into 400pF, ensuring stable operation without external compensation. The device lacks shutdown functionality-distinct from the MAX4401-and is optimized for low-noise, low-distortion analog signal processing rather than power-gating applications.

Key Specifications

Pinout & Package

MAX4402AUA/V+ is housed in an 8-pin µMAX package (package code U8+1), measuring 3mm × 3mm × 0.8mm with exposed thermal pad. This RoHS-compliant, lead(Pb)-free package provides 206.3°C/W junction-to-ambient thermal resistance on a four-layer board and supports reflow soldering at +260°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual op amp applications.

Compared with TSV912IDT and MCP6022-E/SN, the MAX4402AUA/V+ uniquely balances automotive qualification, ultra-low power (320µA), rail-to-rail output, and compact µMAX packaging-making it the only option meeting all three constraints simultaneously for space-constrained, safety-rated automotive signal chains.

Availability

MAX4402AUA/V+ is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4402AUA/V+ 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 developed specifically for cost-sensitive, low-power, single-supply signal conditioning in harsh environments-emphasizing rail-to-rail output, wide temperature operation, and AEC-Q100 compliance for automotive adoption.

FAQ

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

The MAX4402AUA/V+ is unity-gain stable with capacitive loads up to 400pF, as confirmed in the Electrical Characteristics table and Typical Operating Characteristics section. This allows direct interfacing with ADC input capacitors and PCB trace capacitance without requiring external isolation resistors or compensation networks. Exceeding 400pF may cause peaking or oscillation, especially in high-gain configurations.

Does the MAX4402AUA/V+ include a shutdown feature?

No, the MAX4402AUA/V+ does not include a shutdown feature. Shutdown functionality is exclusive to the MAX4401 (single-channel, 6-pin SC70), as explicitly stated in the Selector Guide and Pin Description sections. The MAX4402AUA/V+ is a dual amplifier with fixed operation-its supply current remains at 320µA per amplifier across the full temperature range.

Is the MAX4402AUA/V+ pin-compatible with other packages in the MAX4402 family?

Yes, the MAX4402AUA/V+ shares identical pinout with other 8-pin MAX4402 variants-including the SOT23 (MAX4402AKA/V+) and SO (MAX4402ASA+) packages-as shown in the Pin Configurations diagram. All use the same 1–8 pin assignment: INA−, INA+, VDD, OUTA, OUTB, INB−, INB+, VSS. This enables drop-in replacement across package types without PCB redesign.

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

The MAX4402AUA/V+ has a ground-sensing input stage with a common-mode voltage range from VSS to VDD – 1.4V at +25°C (and VSS to VDD – 1.5V over full temperature range). This allows direct connection to sensors referenced to ground-such as current-sense shunts or thermistors-without level-shifting circuitry, simplifying front-end design in single-supply systems.

How does the AEC-Q100 qualification of the MAX4402AUA/V+ impact its use in automotive designs?

The /V+ suffix denotes AEC-Q100 qualification (Grade 0), meaning the MAX4402AUA/V+ has undergone stress testing for temperature cycling, humidity, ESD, and lifetime reliability per automotive standards. This qualification permits use in safety-critical domains like engine control, transmission control, and ADAS sensor interfaces-where non-qualified op amps would require additional system-level validation.