Analog Devices Inc./Maxim Integrated MAX6071BAUT25/V+T

Overview

MAX6071BAUT25/V+T from Analog Devices is a precision 2.5V series voltage reference IC 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 1/f noise (0.1Hz–10Hz). It sources/sinks ±10mA, operates from 2.8V to 5.0V input, and targets high-accuracy industrial sensing and 24-bit ADC biasing.

For engineers reviewing the MAX6071BAUT25/V+T datasheet, MAX6071BAUT25/V+T pinout, MAX6071BAUT25/V+T application, or MAX6071BAUT25/V+T equivalent, key selection criteria include low-noise performance at 2.5V output, AEC-Q100 qualification for automotive use, SOT23 thermal resistance (θ_JA = 230°C/W), and dual-force/sense output architecture enabling remote load regulation.

Technical Context

The MAX6071BAUT25/V+T implements a bandgap-based series voltage reference with separate force (OUTF) and sense (OUTS) outputs, enabling Kelvin connection to compensate for PCB trace resistance. Its internal architecture includes an enable-controlled shutdown path drawing only 0.6µA, and a dedicated ground-force (GNDF) pin for improved PSRR.

Unlike the filter-capable MAX6070 variant, the MAX6071BAUT25/V+T omits the FILTER pin and uses GNDF/GNDS separation to achieve 84dB ripple rejection at 60Hz and 30µs turn-on settling time - optimized for fast-switching, noise-sensitive precision systems requiring stable 2.5V bias under dynamic load conditions.

Key Specifications

Pinout & Package

Package: 6-pin SOT23 (U6+5A), 2.9mm × 1.6mm footprint, 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 REF5025IDR and ADR4525BRZ, the MAX6071BAUT25/V+T uniquely balances ultra-low noise, AEC-Q100 compliance, enable control, and compact SOT23 packaging - making it optimal for space-constrained, battery-aware, and automotive-qualified precision systems.

Availability

MAX6071BAUT25/V+T is available at Aetrix Electronics and suitable for high-accuracy industrial control, precision instrumentation, and automotive sensor conditioning requiring stable component supply across extended temperature ranges.

Supply support for MAX6071BAUT25/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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX6070/MAX6071 family delivers low-noise, low-drift voltage references for precision data acquisition systems where reference stability directly determines measurement fidelity and system-level accuracy.

FAQ

What is the maximum load current supported by the MAX6071BAUT25/V+T?

The MAX6071BAUT25/V+T supports ±10mA of continuous load current - both sourcing and sinking - while maintaining output regulation within specifications. This capability allows it to drive multiple downstream op-amps, ADC reference inputs, or sensor excitation circuits without external buffering. The device remains stable with capacitive loads from 0.1µF to 10µF, accommodating common decoupling practices in precision analog designs.

Does the MAX6071BAUT25/V+T require an external filter capacitor?

No, the MAX6071BAUT25/V+T does not require an external filter capacitor on the FILTER pin because it lacks that pin entirely - unlike the MAX6070 variant. Instead, it relies on its dual-force/sense architecture and recommends a 0.1µF ceramic capacitor between OUTF and GNDF for stability and broadband noise suppression. This simplifies layout and reduces BOM count compared to filter-capable alternatives.

Is the MAX6071BAUT25/V+T qualified for automotive applications?

Yes, the MAX6071BAUT25/V+T is AEC-Q100 qualified (Grade 1: –40°C to +125°C), making it suitable for automotive applications such as engine control units, battery management systems, and ADAS sensor signal conditioning. Its guaranteed performance across the full automotive temperature range, combined with low drift and high PSRR, ensures reliable operation in harsh under-hood environments.

How does the dual-output (OUTF/OUTS) architecture improve accuracy in the MAX6071BAUT25/V+T?

The MAX6071BAUT25/V+T's separate OUTF (force) and OUTS (sense) outputs implement a Kelvin connection topology. By routing OUTS directly to the load ground point and feeding it back to the internal error amplifier, the device cancels voltage drop across PCB traces or connectors - preserving the ±0.04% initial accuracy even with 100mΩ of series resistance. This is essential for remote-sensing applications like distributed I/O modules.

What is the typical supply current of the MAX6071BAUT25/V+T at room temperature?

The typical supply current of the MAX6071BAUT25/V+T is 150µA at +25°C, with a maximum of 235µA across the full temperature range (–40°C to +125°C). In shutdown mode (EN = low), supply current drops to just 0.6µA, enabling ultra-low-power operation in battery-powered devices such as portable calibrators or wireless sensor nodes where duty-cycled reference activation is used.