Analog Devices Inc./Maxim Integrated MAX4475AUT/V+T

Overview

MAX4475AUT/V+T from Maxim Integrated is a single, AEC-Q100 qualified, rail-to-rail output operational amplifier optimized for low-noise, low-distortion signal conditioning in automotive and industrial systems. It delivers 10MHz gain-bandwidth, 0.0002% THD+N at 1kHz (1kΩ load), 4.5nV/√Hz input voltage-noise density, and operates from +2.7V to +5.5V single supply - enabling high-fidelity buffering in 16-bit ADC/DAC interfaces and sensor front-ends.

For engineers reviewing the MAX4475AUT/V+T datasheet, MAX4475AUT/V+T pinout, MAX4475AUT/V+T application, or MAX4475AUT/V+T equivalent, this page provides verified circuit role (ground-sensing, shutdown-capable op amp), package mapping (SOT23-6), thermal specs (θJA = 185.5°C/W), absolute max ratings, and automotive-grade reliability data per AEC-Q100 Rev H.

Technical Context

The MAX4475AUT/V+T is unity-gain stable with internal compensation, supporting closed-loop gains from +1V/V up to +10V/V without external compensation. Its BiCMOS process enables ultra-low input bias current (±1pA typ) and rail-to-rail output swing within 80mV of supplies into 1kΩ, while maintaining DC accuracy across –40°C to +125°C.

It integrates a dedicated SHDN pin that reduces quiescent current to 0.01µA and places the output in high-impedance state - critical for power-gated sensor nodes. Input common-mode range extends 0.2V below VSS and to VDD – 1.6V, enabling true ground-sensing operation in single-supply configurations.

Key Specifications

Pinout & Package

MAX4475AUT/V+T is housed in a RoHS-compliant, lead(Pb)-free 6-pin SOT23 package (outline 21-0058, land pattern 90-0175), with θ_JA = 185.5°C/W on single-layer board. Exposed paddle not present - standard SOT23 construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, rail-to-rail op amp applications.

Compared with MAX4475AUT+T, the /V variant adds AEC-Q100 validation and extended temperature screening - essential for automotive deployment. Against OPA333AIDBVR, MAX4475AUT/V+T trades zero-drift precision for 10× higher bandwidth and lower noise, making it superior for dynamic sensor and audio signal chains.

Availability

MAX4475AUT/V+T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial data acquisition systems, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4475AUT/V+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 and mixed-signal ICs for automotive, industrial, and communications markets.

The MAX4475 series belongs to Maxim's low-noise, rail-to-rail op amp product line, engineered specifically for high-dynamic-range signal conditioning in automotive-grade environments where noise, distortion, and temperature stability are critical.

FAQ

What is the operating temperature range for MAX4475AUT/V+T?

The MAX4475AUT/V+T is rated for –40°C to +125°C operation and qualified per AEC-Q100 Grade 1, ensuring reliable performance in under-hood automotive applications and industrial edge nodes exposed to thermal cycling.

Does MAX4475AUT/V+T support single-supply operation?

Yes, MAX4475AUT/V+T operates from a single +2.7V to +5.5V supply. Its input common-mode range extends 0.2V below VSS (ground), and its rail-to-rail output swings within 80mV of both rails into 1kΩ - enabling true ground-referenced signal processing without dual supplies.

What is the purpose of the SHDN pin on MAX4475AUT/V+T?

The SHDN pin on MAX4475AUT/V+T controls low-power shutdown mode: pulling it low (≤0.3×VDD) reduces supply current to 0.01µA and places the output in high-impedance state, while pulling it high (≥0.7×VDD) enables normal operation - ideal for duty-cycled sensor interfaces.

Is MAX4475AUT/V+T pin-compatible with other MAX447x variants in SOT23-6?

Yes, MAX4475AUT/V+T shares identical pinout with MAX4475AUT+T, MAX4476AUT+T, and MAX4488AUT+T in SOT23-6. However, only MAX4475AUT/V+T and MAX4488AUT/V+T include AEC-Q100 qualification; MAX4476 lacks SHDN functionality.

What package type does MAX4475AUT/V+T use, and what are its thermal characteristics?

MAX4475AUT/V+T uses a 6-pin SOT23 package (outline 21-0058). On a single-layer board, its junction-to-ambient thermal resistance (θ_JA) is 185.5°C/W, and junction-to-case (θ_JC) is 75°C/W - requiring careful PCB copper area allocation for automotive ambient temperatures up to +125°C.