Analog Devices Inc./Maxim Integrated MAX6070BAUT50+T

Overview

MAX6070BAUT50+T from Analog Devices is a precision 5.0V low-noise, low-drift series voltage reference in a 6-pin SOT23 package. It delivers ±0.04% initial accuracy, 6ppm/°C max temperature drift (A grade), and 4.8µV_P-P 1/f noise (0.1Hz–10Hz) at 5V output. Designed for high-resolution ADCs and industrial process control, it sources/sinks ±10mA with 150µA quiescent current and operates from –40°C to +125°C.

For engineers reviewing the MAX6070BAUT50+T datasheet, MAX6070BAUT50+T pinout, MAX6070BAUT50+T application, or MAX6070BAUT50+T equivalent, key selection criteria include its 5.0V output, integrated noise filter option, AEC-Q100 qualification, and dual-force/sense output architecture enabling stable performance under varying load and layout conditions.

Technical Context

The MAX6070BAUT50+T implements a bandgap-based series voltage reference with separate force (OUTF) and sense (OUTS) outputs, enabling Kelvin sensing to reject PCB trace resistance effects. Its internal filter pin (FILTER) accepts an external 0.1µF capacitor to suppress high-frequency noise-critical for wideband precision measurement systems.

It features enable-controlled shutdown (6µA ISD), operates down to 2.7V input (VIN ≥ VOUT + dropout), and maintains 0.2% output regulation over ±10mA load current. The device's 80dB–100dB ripple rejection (60Hz) and 9.7ms turn-on settling time (to 0.01%) support robust operation in noisy industrial power domains.

Key Specifications

Pinout & Package

MAX6070BAUT50+T uses a 6-pin SOT23 package (package code U6+5A, outline 21-0058), with 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 ADR4550BRZ and REF5050IDR, the MAX6070BAUT50+T uniquely combines AEC-Q100 qualification, ultra-low 150µA supply current, integrated enable and noise filter, and compact SOT23 footprint-making it optimal for space- and power-constrained automotive and portable industrial designs where moderate drift (6ppm/°C) is acceptable.

Availability

MAX6070BAUT50+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision industrial process control, and automotive sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6070BAUT50+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 was engineered specifically for high-accuracy, low-noise voltage referencing in harsh environments-targeting applications demanding sub-10µV_P-P noise, ppm-level drift stability, and AEC-Q100 compliance without sacrificing small size or low power.

FAQ

What is the output voltage tolerance of the MAX6070BAUT50+T at room temperature?

The MAX6070BAUT50+T has an output voltage tolerance of ±0.04% at +25°C, corresponding to ±2mV around its nominal 5.000V output. This tight initial accuracy eliminates the need for system-level trimming in many precision measurement applications, reducing calibration time and cost. The MAX6070BAUT50+T achieves this via laser-trimmed thin-film resistors and proprietary bandgap core design.

Does the MAX6070BAUT50+T require external capacitors for stability?

Yes-the MAX6070BAUT50+T requires a minimum 0.1µF ceramic capacitor between OUTF and GNDF, and a 0.1µF capacitor between FILTER and GND if noise filtering is enabled. These capacitors ensure phase margin >45° and prevent oscillation under all load conditions from 0 to ±10mA. The device remains stable with output capacitance up to 10µF, supporting large decoupling needs in noisy environments.

How does the dual-force/sense architecture of the MAX6070BAUT50+T improve accuracy?

The MAX6070BAUT50+T uses separate OUTF (force) and OUTS (sense) pins to implement a Kelvin connection, allowing the reference to regulate voltage directly at the load point. This compensates for voltage drop across PCB traces and connectors-up to 100mΩ-ensuring the actual voltage delivered to the ADC or DAC remains within ±0.01% regardless of layout parasitics. The MAX6070BAUT50+T specifies this architecture explicitly in its pin description and application schematics.

Is the MAX6070BAUT50+T qualified for automotive applications?

Yes-the MAX6070BAUT50+T is AEC-Q100 qualified (Grade 1: –40°C to +125°C), with full reliability testing including HTOL, TC, UHAST, and ESD per automotive standards. Its 6ppm/°C max drift, 150µA supply current, and enable functionality make it suitable for engine control units, battery management systems, and ADAS sensor interfaces where long-term stability and low power are mandatory.

What is the maximum load current the MAX6070BAUT50+T can source or sink?

The MAX6070BAUT50+T can source or sink up to ±10mA continuously while maintaining output regulation within specification. At 10mA load, dropout voltage remains ≤150mV, and load regulation is specified at 75–125µV/mA. This capability allows direct driving of multiple op-amps, ADC reference inputs, or DAC bias networks without external buffering-reducing bill-of-materials and board area in compact designs using the MAX6070BAUT50+T.