Analog Devices Inc./Maxim Integrated MAX6034AEXR25-T

Overview

The MAX6034AEXR25-T from Maxim Integrated is a precision, micropower, low-dropout series voltage reference delivering a stable 2.500V output with ±0.2% initial accuracy and 30ppm/°C max temperature coefficient in a 3-pin SC70 package. It draws only 90µA supply current, sustains 200mV dropout at 1mA load, and operates across –40°C to +85°C - ideal for high-accuracy data acquisition and battery-powered sensor front-ends.

For engineers reviewing the MAX6034AEXR25-T datasheet, MAX6034AEXR25-T pinout, MAX6034AEXR25-T application, or MAX6034AEXR25-T equivalent, this page delivers verified specifications, real-world design meaning, thermal stability behavior, load-transient response under 1µF capacitance, and validated alternatives for precision analog systems requiring minimal board space and ultra-low quiescent power.

Technical Context

The MAX6034AEXR25-T employs a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve <30ppm/°C TC and ±0.2% initial tolerance. Its series-mode architecture eliminates external biasing resistors and enables supply-current independence (≤16µA/V variation) over input voltages from 2.7V to 5.5V.

This device is internally compensated and stable with 0–1µF output capacitance, supporting fast turn-on settling (140µs to 0.1%) and low-noise operation (64µV_RMS, 10Hz–10kHz). It sources up to 1mA and sinks up to 200µA while maintaining regulation down to 200mV dropout - critical for single-cell Li-ion and energy-harvesting applications.

Key Specifications

Pinout & Package

Package: SC70-3 (3-pin surface-mount), 1.25mm × 0.8mm footprint, 0.95mm height - optimized for space-constrained portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR3425ARJZ-R7, the MAX6034AEXR25-T saves 0.35mm² board area and reduces supply current by 35µA - critical for miniaturized IoT nodes. Against REF3325AIDBVR, it trades 15ppm/°C higher TC for guaranteed stability with 1µF loads and superior dropout performance, enabling robust operation in noisy industrial environments.

Availability

The MAX6034AEXR25-T is available at Aetrix Electronics and suitable for portable data loggers, medical sensor nodes, industrial process transmitters, smart meter analog front-ends, and battery-operated test equipment requiring stable component supply, long-lifecycle support, and consistent parametric performance.

Supply support for MAX6034AEXR25-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 U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for precision, power, and interface applications.

The MAX6034 family was designed specifically for space- and power-constrained precision analog systems - delivering micropower operation, SC70 packaging, and curvature-corrected bandgap performance for data acquisition, sensor conditioning, and portable instrumentation.

FAQ

What is the maximum load current the MAX6034AEXR25-T can source while maintaining regulation?

The MAX6034AEXR25-T can source up to 1mA while maintaining output regulation within specification. At this load, dropout voltage remains ≤200mV, and load regulation error is ≤1.0mV/mA. Exceeding 1mA may cause output deviation beyond the ±0.2% initial accuracy band, especially near minimum input voltage. For higher current needs, consider buffering with a precision op-amp.

Does the MAX6034AEXR25-T require an external output capacitor for stability?

No, the MAX6034AEXR25-T is internally compensated and stable with 0–1µF output capacitance - including no capacitor. An external capacitor is optional and used only to improve transient response during large load steps. The absence of a mandatory capacitor reduces component count and PCB area, a key advantage in ultra-compact designs like hearing aids and implantable sensors.

What is the supply voltage range for the MAX6034AEXR25-T, and how does it vary with load?

The MAX6034AEXR25-T operates from (V_OUT + 200mV) to 5.5V - i.e., 2.7V to 5.5V for the 2.500V version. This minimum input is defined by the 200mV dropout specification at 1mA. Supply current remains stable (≤115µA) across this range, varying by ≤16µA/V. At light loads (<100µA), the device functions down to 2.5V input, but regulation margin decreases.

How does temperature hysteresis affect long-term measurement accuracy of the MAX6034AEXR25-T?

The MAX6034AEXR25-T exhibits ≤100ppm temperature hysteresis - meaning its output voltage at +25°C may shift by up to ±0.0025V after cycling between –40°C and +85°C. This is distinct from TC drift and impacts repeatability in systems undergoing repeated thermal cycles, such as outdoor environmental sensors. For metrology-grade repeatability, hysteresis must be characterized during final calibration.

Can the MAX6034AEXR25-T be used in applications requiring better than 0.2% total accuracy over temperature?

Yes - the MAX6034AEXR25-T's ±0.2% initial accuracy and ≤30ppm/°C TC yield <±0.05% total error over –40°C to +85°C (ΔT = 125°C → 3750ppm = ±0.0094V). Combined with ≤100ppm hysteresis and 90ppm/1000hr long-term drift, it supports <0.1% system-level accuracy in calibrated systems. For uncalibrated 12-bit applications, it meets full-scale error budgets without trimming.