Analog Devices Inc./Maxim Integrated MAX6071ANT25+T

Overview

MAX6071ANT25+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 5.5V input, and targets high-accuracy ADC/DAC biasing in industrial process control systems.

For engineers reviewing the MAX6071ANT25+T datasheet, MAX6071ANT25+T pinout, MAX6071ANT25+T application, or MAX6071ANT25+T equivalent, key selection criteria include low-noise performance for 16-bit+ data converters, AEC-Q100 qualification for automotive use, thermal stability over –40°C to +125°C, and force-sense output architecture enabling remote load regulation.

Technical Context

The MAX6071ANT25+T implements a bandgap-based series voltage reference with separate force (OUTF) and sense (OUTS) outputs, enabling Kelvin sensing to eliminate PCB trace resistance errors. Its dual-ground architecture (GNDF/GNDS) isolates reference ground return paths for improved PSRR and noise rejection.

Unlike the MAX6070, it omits the FILTER pin-eliminating external capacitor dependency for high-frequency noise suppression-and features faster 30µs turn-on settling time and 75µs enable settling time at 2.5V output, optimized for dynamic power-rail monitoring and fast-sampling instrumentation.

Key Specifications

Pinout & Package

Package: 6-pin SOT23 (package code U6+5A), 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 ADR4525BRZ and REF5025IDR, the MAX6071ANT25+T uniquely balances ultra-low noise, AEC-Q100 compliance, enable functionality, and SOT23 footprint-making it optimal for compact, automotive-grade, battery-aware precision systems where 150µA quiescent current and force-sense regulation are decisive.

Availability

MAX6071ANT25+T is available at Aetrix Electronics and suitable for high-accuracy industrial process control, automotive sensor biasing, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6071ANT25+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 and sensor signal chains where metrological accuracy and long-term stability are critical design requirements.

FAQ

What is the maximum load current supported by the MAX6071ANT25+T?

The MAX6071ANT25+T supports ±10mA of continuous load current-both sourcing and sinking-while maintaining output regulation within specifications. At 10mA sink, dropout voltage remains ≤150mV, and load regulation error stays below 150µV/mA. This capability allows direct driving of multiple op-amp bias networks or SAR ADC reference inputs without external buffering, simplifying layout and reducing component count in precision analog signal chains.

Does the MAX6071ANT25+T require an external filter capacitor like the MAX6070?

No, the MAX6071ANT25+T does not include a FILTER pin and therefore does not require an external capacitor for high-frequency noise suppression. Unlike the MAX6070, its internal architecture is optimized for broadband noise performance without external filtering components. The device achieves 6µV_RMS thermal noise (10Hz–10kHz) and 84dB ripple rejection at 60Hz inherently, making it simpler to implement in space-constrained layouts where component count reduction is critical.

How does the force-sense output configuration of the MAX6071ANT25+T improve accuracy?

The MAX6071ANT25+T uses separate OUTF (force) and OUTS (sense) pins to implement Kelvin sensing: OUTS connects directly to the load's ground reference point, closing the feedback loop at the point of use. This eliminates voltage drop errors caused by PCB trace resistance between the IC and load-up to ~100mΩ-ensuring the regulated 2.5V appears precisely at the load. In practice, this preserves the ±0.04% initial accuracy and 6ppm/°C drift specification at the destination node, not just at the IC die.

Is the MAX6071ANT25+T qualified for automotive applications?

Yes, the MAX6071ANT25+T is AEC-Q100 qualified (Grade 1: –40°C to +125°C ambient), making it suitable for automotive applications including engine control units, battery management systems, and ADAS sensor signal conditioning. Its guaranteed 6ppm/°C max drift, 84dB PSRR, and robust ESD tolerance (±2kV HBM) meet stringent automotive reliability requirements. The SOT23 package also passes mechanical shock and vibration testing per AEC-Q200 standards.

What is the typical turn-on settling time for the MAX6071ANT25+T?

The MAX6071ANT25+T achieves 0.01% output settling in 30µs after power-on (with 0.1µF output capacitor), significantly faster than the MAX6070's 9.7ms with filter capacitor. This rapid stabilization enables use in burst-mode data acquisition systems, such as portable multimeters or automated test equipment, where frequent power cycling is required. The enable pin further reduces effective wake-up latency to 75µs, supporting microsecond-level response in closed-loop control loops.