Analog Devices Inc./Maxim Integrated MAX40075AUT/V+T

Overview

MAX40075AUT/V+T from Maxim Integrated is a unity-gain stable, low-noise, low-input bias current operational amplifier in a 6-pin SOT23 package, operating from +2.7V to +5.5V single supply, delivering 10MHz gain-bandwidth product, 4.2nV/√Hz input voltage-noise density at 30kHz, and rail-to-rail output swing with ≤30mV from rails into 1kΩ load - ideal for precision ADC buffering and automotive powertrain sensor signal conditioning.

For engineers reviewing the MAX40075AUT/V+T datasheet, MAX40075AUT/V+T pinout, MAX40075AUT/V+T application, or MAX40075AUT/V+T equivalent, this page provides verified technical context, pin-level design meaning, real-world application mappings, and validated alternative options for noise-critical, high-impedance source amplification in AEC-Q100-compliant systems.

Technical Context

The MAX40075AUT/V+T implements a BiCMOS input stage optimized for ultra-low input bias current (<1pA typ) and low 1/f noise (1.7µV_P-P, 0.1Hz–10Hz), enabling stable transimpedance operation with photodiode or strain gauge sources. Its unity-gain stability and 70° phase margin ensure robust performance without external compensation under capacitive loads up to 50pF.

It features true rail-to-rail output drive capability (±20mA sink/source), input common-mode range extending to VSS – 0.2V, and shutdown control that reduces supply current to ≤1µA while placing the output in high-impedance state - supporting dynamic power management in battery-sensitive or thermally constrained automotive modules.

Key Specifications

Pinout & Package

MAX40075AUT/V+T is housed in a 6-pin SOT23 package (outline 21-0058, land pattern 90-0175), RoHS-compliant, with thermal resistance θ_JA = 115°C/W on four-layer board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, unity-gain stable op amp applications.

Compared with OPA320AIDBVR and ADA4898-1ARMZ, the MAX40075AUT/V+T uniquely combines AEC-Q100 Grade 0 qualification, rail-to-rail output, sub-pA input bias, and 4.2nV/√Hz noise in a 6-pin SOT23 - making it the only drop-in solution for automotive-grade, low-power, high-precision sensor signal chains requiring no layout revision.

Availability

MAX40075AUT/V+T is available at Aetrix Electronics and suitable for automotive powertrain control, medical instrumentation, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX40075AUT/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, mixed-signal, and power management ICs for automotive, industrial, and communications markets.

The MAX40075AUT/V+T belongs to Maxim's low-noise, low-bias op amp family engineered specifically for AEC-Q100-compliant signal conditioning in high-impedance, wide-dynamic-range applications such as automotive sensor interfaces and medical diagnostics.

FAQ

What is the gain-bandwidth product of the MAX40075AUT/V+T?

The MAX40075AUT/V+T has a gain-bandwidth product of 10MHz and is unity-gain stable. This specification is confirmed in the Electrical Characteristics table and Typical Operating Characteristics section of the official datasheet. The 10MHz GBW allows stable closed-loop operation at unity gain up to 10MHz, supporting high-fidelity signal conditioning in applications like 16-bit ADC buffering. The MAX40075AUT/V+T does not support gains ≥5V/V - that functionality is reserved for the MAX40088 variant.

Is the MAX40075AUT/V+T qualified for automotive use?

Yes, the MAX40075AUT/V+T is AEC-Q100 qualified (Grade 0) for operation from -40°C to +125°C, as explicitly stated in the Benefits and Features section and Ordering Information table. The "/V" suffix denotes automotive qualification, and the device meets stress testing requirements for humidity, temperature cycling, and ESD robustness required in powertrain and body control modules. This makes MAX40075AUT/V+T suitable for under-hood and chassis-mounted applications.

What is the input bias current specification for the MAX40075AUT/V+T?

The MAX40075AUT/V+T has a typical input bias current of <1pA, with a maximum of 2300pA over temperature, as specified in the Electrical Characteristics table. This ultra-low value is achieved via BiCMOS input stage design and enables accurate amplification of signals from high-impedance sources such as piezoelectric transducers, photodiodes, and strain gauge bridges without introducing significant offset error or drift. The low IB directly supports 16-bit accuracy in DAC output buffers like the MAX5541 interface.

Does the MAX40075AUT/V+T support rail-to-rail output swing?

Yes, the MAX40075AUT/V+T provides true rail-to-rail output swing, delivering output voltage within 30mV of VDD or VSS when driving a 1kΩ load, as verified in the Electrical Characteristics table under "Output Voltage Swing." This capability ensures maximum dynamic range utilization in low-voltage systems (e.g., 3.3V automotive domains) and eliminates the need for level-shifting circuitry in ADC/DAC interface applications. The output stage is push-pull and capable of ±20mA sink/source current.

What package type is used for the MAX40075AUT/V+T?

The MAX40075AUT/V+T uses a 6-pin SOT23 package (outline number 21-0058, land pattern 90-0175), as documented in the Package Information section and Ordering Information table. This surface-mount package measures 2.9mm × 1.6mm × 1.15mm and features RoHS-compliant lead-free terminations (denoted by "+"). It is distinct from the 6-bump WLP variant (MAX40075ANT+T) and shares pinout compatibility with other SOT23 op amps, simplifying PCB layout reuse in space-constrained automotive modules.