Analog Devices Inc./Maxim Integrated MAX6071BAUT41+T

Overview

MAX6071BAUT41+T from Analog Devices is a precision 4.096V series voltage reference in a 6-pin SOT23 package, delivering ±0.04% initial accuracy, 6ppm/°C max temperature drift (A grade), and ultra-low 4.8µV_P-P (0.1Hz–10Hz) noise - enabling high-resolution ADC/DAC biasing in industrial process control and automotive sensor signal chains.

For engineers reviewing the MAX6071BAUT41+T datasheet, MAX6071BAUT41+T pinout, MAX6071BAUT41+T application, or MAX6071BAUT41+T equivalent, this device supports low-noise, high-stability reference design with 10mA sourcing/sinking capability, 2.7V to 5.5V input range, and AEC-Q100 qualification for automotive-grade reliability.

Technical Context

The MAX6071BAUT41+T implements a bandgap-based series reference architecture with separate force (OUTF) and sense (OUTS) outputs, enabling Kelvin sensing to reject PCB trace resistance errors. Its dual-ground structure (GNDF/GNDS) isolates filter and load return paths to minimize noise coupling.

Unlike the MAX6070, it omits the FILTER pin and internal noise-filtering option, prioritizing fast 40µs turn-on settling and 75µs enable settling at 4.096V output - optimized for dynamic precision systems requiring rapid reference activation without external capacitors on FILTER.

Key Specifications

Pinout & Package

Package: 6-pin SOT23 (U6+5A outline), footprint-compatible with JEDEC MO-178AB, thermal resistance θ_JA = 230°C/W on multilayer board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR4540BRZ, MAX6071BAUT41+T offers 60× lower supply current and SOT23 compatibility but trades 3ppm/°C drift for 6ppm/°C; versus REF5040AIDR, it delivers AEC-Q100 compliance and 3× lower I_Q at identical package size and noise performance.

Availability

MAX6071BAUT41+T is available at Aetrix Electronics and suitable for high-accuracy industrial process control, precision instrumentation, and automotive sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6071BAUT41+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 since 1965.

The MAX6070/MAX6071 family targets high-precision voltage reference needs in space-constrained, low-power, and automotive-qualified systems - emphasizing ultra-low noise, Kelvin sensing, and extended temperature operation without sacrificing SOT23 footprint.

FAQ

What is the maximum load current supported by the MAX6071BAUT41+T?

The MAX6071BAUT41+T supports ±10mA of load current - meaning it can source up to +10mA to a load or sink up to –10mA from a load while maintaining output regulation within specification. This capability eliminates the need for external buffer amplifiers in many precision applications, including driving multiple ADC reference inputs or op-amp bias networks. The MAX6071BAUT41+T maintains its 4.096V output accuracy and low-drift performance across this full load range.

Does the MAX6071BAUT41+T require an external filter capacitor on the FILTER pin?

No - the MAX6071BAUT41+T does not include a FILTER pin; that functionality is exclusive to the MAX6070 variant. The MAX6071BAUT41+T uses a simplified 6-pin pinout (GNDF, GNDS, EN, IN, OUTS, OUTF) with no dedicated filter terminal. Instead, noise suppression relies on proper PCB layout: a 0.1µF ceramic capacitor between IN and GNDF, and optional 0.1–10µF capacitor between OUTF and GNDS. This architecture prioritizes fast settling over adjustable high-frequency filtering.

Is the MAX6071BAUT41+T AEC-Q100 qualified, and what grade does it meet?

Yes, the MAX6071BAUT41+T is AEC-Q100 qualified and meets Grade 2 requirements (-40°C to +105°C ambient), with full characterization across the extended industrial range of –40°C to +125°C. This qualification confirms reliability for automotive applications such as engine control units, ADAS sensor interfaces, and body electronics where long-term stability under thermal cycling and vibration is mandatory. The MAX6071BAUT41+T part number explicitly denotes A-grade (6ppm/°C drift) and automotive qualification.

How does the Kelvin output configuration (OUTF/OUTS) improve accuracy in the MAX6071BAUT41+T?

The MAX6071BAUT41+T's separate OUTF (force) and OUTS (sense) outputs implement a 4-wire Kelvin reference architecture. By routing OUTS directly to the load's reference input and tying OUTF to the same point externally, the device compensates for voltage drop across PCB traces or connectors. This eliminates errors caused by trace resistance - for example, a 50mΩ trace carrying 10mA would introduce 0.5mV error without Kelvin sensing, but the MAX6071BAUT41+T rejects it entirely, preserving sub-0.01% accuracy in real-world layouts.

What is the typical turn-on settling time for the MAX6071BAUT41+T at 4.096V output?

The MAX6071BAUT41+T achieves 0.01% output settling in 40µs after power-on (with no external FILTER capacitor), as specified in the Electrical Characteristics table for V_OUT = 4.096V. This fast settling enables use in burst-mode or event-triggered measurement systems where the reference must stabilize before ADC conversion begins. When paired with a 0.1µF output capacitor, settling extends to 10ms - a trade-off between transient response and output ripple suppression depending on system timing constraints.