Analog Devices Inc./Maxim Integrated MAX6067AEUR+T

Overview

MAX6067AEUR+T from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering a stable 4.500V output with ±0.2% (max) initial accuracy and 20ppm/°C (max) temperature coefficient over –40°C to +85°C. It sources up to 5mA or sinks 2mA, operates from (V_OUT + 0.2V) to 12.6V input, and draws only 90µA typical quiescent current - ideal for high-accuracy ADC biasing in portable battery-powered systems.

For engineers reviewing the MAX6067AEUR+T datasheet, MAX6067AEUR+T pinout, MAX6067AEUR+T application, or MAX6067AEUR+T equivalent, key selection criteria include its 50–200mV dropout at 1mA, no-output-capacitor-required operation, 70dB PSRR at 120Hz, 55µV_p-p (0.1Hz–10Hz) noise, and SOT23-3 footprint compatibility with space-constrained precision analog designs.

Technical Context

The MAX6067AEUR+T is a three-terminal, internally compensated series voltage reference using proprietary curvature-correction circuitry and laser-trimmed thin-film resistors. Its BiCMOS process enables ultra-low supply current variation (≤8µA/V) across input voltage and eliminates need for external compensation capacitors.

It delivers 4.500V nominal output with guaranteed performance across –40°C to +85°C, supports sourcing/sinking load currents without stability degradation, and maintains <0.2% output error under line/load transients - making it suitable for direct replacement of shunt references in low-power, high-precision signal chains.

Key Specifications

Pinout & Package

MAX6067AEUR+T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 0.8mm footprint and 0.95mm height - optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR3445ARJZ-R7 and REF3345AIDBVR, the MAX6067AEUR+T offers superior load drive (5mA source/2mA sink) and lower dropout (50mV min) in the same SOT23-3 footprint - making it optimal for mixed-signal SoC interfaces and high-current precision DACs where both accuracy and drive strength matter.

Availability

MAX6067AEUR+T is available at Aetrix Electronics and suitable for portable battery-powered systems, notebook computers, PDAs/GPS/DMMs, and precision 3V/5V systems requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for MAX6067AEUR+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX6061–MAX6068 family was designed specifically for space-constrained, battery-operated precision systems needing low-dropout, micropower, and high-output-current voltage references - addressing limitations of traditional shunt references in modern portable electronics.

FAQ

What is the maximum load current the MAX6067AEUR+T can source or sink?

The MAX6067AEUR+T can source up to 5mA and sink up to 2mA while maintaining specified accuracy and stability. This dual-direction capability allows it to drive ADC reference inputs, op-amp bias networks, and active filter stages without external buffers - a key advantage over many competing references limited to sourcing only.

Does the MAX6067AEUR+T require an external output capacitor for stability?

No, the MAX6067AEUR+T is internally compensated and does not require an external output capacitor for stability. It remains stable with capacitive loads up to at least 1µF, though adding ≥0.1µF improves transient response during load steps - enabling flexible design trade-offs between board area and dynamic performance in the MAX6067AEUR+T implementation.

What is the minimum input voltage required for the MAX6067AEUR+T to regulate at 4.500V?

The minimum input voltage for the MAX6067AEUR+T is (V_OUT + 0.2V) = 4.7V, per the datasheet's guaranteed operating condition. At 1mA load, dropout is typically 50mV and max 200mV, meaning regulation is maintained down to 4.55V input - critical for brown-out resilience in battery-fed systems where voltage sags occur.

How does the MAX6067AEUR+T compare to shunt voltage references in terms of supply efficiency?

Unlike shunt references that waste current through a series resistor, the MAX6067AEUR+T draws only ~90µA quiescent current independent of input voltage - reducing wasted power by >90% in typical 5V systems. This efficiency directly extends battery life in MAX6067AEUR+T-based portable instruments and eliminates thermal derating concerns in sealed enclosures.

Is the MAX6067AEUR+T compatible with lead-free reflow soldering processes?

Yes, the MAX6067AEUR+T is packaged in RoHS-compliant, lead-free SOT23-3 and rated for lead-free reflow per JEDEC J-STD-020. Its maximum lead temperature is +300°C for 10 seconds, supporting standard Pb-free assembly flows without reliability degradation - ensuring seamless integration into MAX6067AEUR+T-based production lines.