Analog Devices Inc./Maxim Integrated MAX6023EBT21

Overview

MAX6023EBT21 from Maxim Integrated is a precision, low-dropout, micropower series-mode voltage reference in a 5-bump UCSP package, delivering a stable 2.048V output with ±0.20% initial accuracy and 30ppm/°C max temperature coefficient over –40°C to +85°C. It operates from 2.5V to 12.6V input, draws only 35µA max supply current, and maintains stability with up to 2.2nF load capacitance-ideal for high-resolution ADC biasing in portable data acquisition systems.

For engineers reviewing the MAX6023EBT21 datasheet, MAX6023EBT21 pinout, MAX6023EBT21 application, or MAX6023EBT21 equivalent, key selection criteria include its 2.048V output (optimized for 12-bit DAC/ADC full-scale scaling), ultra-low quiescent current, dropout voltage of 100mV at 500µA, and chip-scale packaging for space-constrained industrial sensors and handheld instrumentation.

Technical Context

The MAX6023EBT21 uses a proprietary curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve <30ppm/°C drift and ±0.20% initial accuracy. Its series-mode architecture enables active sourcing/sinking of up to ±500µA while maintaining regulation down to 100mV dropout.

Unlike shunt references, it exhibits only 0.8µA/V supply current variation across VIN and requires no external compensation capacitor-achieving dynamic stability with 0–2.2nF capacitive loads. Its UCSP package (1.0mm × 1.5mm × 0.3mm) integrates bump-level interconnects directly to PCB pads, eliminating leadframe parasitics and enabling placement adjacent to precision analog signal chains.

Key Specifications

Pinout & Package

MAX6023EBT21 is housed in a 5-bump UCSP (Ultra Compact Silicon Package) measuring 1.0mm × 1.5mm × 0.3mm, with bumps on the bottom side. The package uses wafer-level chip-scale construction for minimal footprint and height-critical for ultra-thin handheld devices and stacked PCB assemblies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR3420BRJZ-R7 and REF3020AIDBZR, MAX6023EBT21 provides identical 2.048V output and initial accuracy while offering the smallest possible footprint (1.0mm × 1.5mm) and lowest profile (0.3mm)-making it uniquely suitable for next-generation miniaturized instrumentation where every 0.1mm of Z-height matters.

Availability

MAX6023EBT21 is available at Aetrix Electronics and suitable for portable data acquisition, industrial sensor transmitters, and medical wearable sensors requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for MAX6023EBT21 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) designs precision analog and mixed-signal ICs for demanding industrial, medical, and communications applications, emphasizing low power, high accuracy, and small form factors.

The MAX6023 family was developed specifically for battery-operated and space-constrained systems needing high-accuracy voltage references with minimal quiescent current and chip-scale packaging-targeting portable instrumentation, sensor nodes, and embedded control.

FAQ

What is the maximum load current supported by the MAX6023EBT21 while maintaining regulation?

The MAX6023EBT21 can source or sink up to ±500µA while maintaining output regulation within specifications. At 500µA load, dropout voltage remains ≤200mV, and load regulation is specified at 0.70µV/µA-ensuring output deviation stays below 0.35mV. This capability supports direct driving of ADC reference inputs and op-amp bias networks without external buffers.

Does the MAX6023EBT21 require an external output capacitor for stability?

No, the MAX6023EBT21 does not require an external output capacitor for stability. It is internally compensated and remains oscillation-free with capacitive loads from 0 to 2.2nF. An optional capacitor may improve transient response during large load steps, but omitting it saves board space and BOM cost-especially valuable in UCSP-based layouts where every mm² counts.

How does the supply current of the MAX6023EBT21 vary with input voltage?

The MAX6023EBT21 exhibits exceptionally stable supply current: only 0.8µA/V variation across its 2.5V to 12.6V input range. At +25°C, quiescent current is 27µA typical and 35µA maximum-virtually independent of VIN. This predictability simplifies battery-life calculations and eliminates supply-current-induced errors in precision measurement systems.

What is the turn-on settling time specification for the MAX6023EBT21?

The MAX6023EBT21 achieves 0.1% of final output voltage in 85µs when C_OUT = 50pF, per the datasheet's ELECTRICAL CHARACTERISTICS table. This fast settling supports low-duty-cycle wake-up modes in energy-harvesting sensors and portable instruments-enabling rapid acquisition after sleep without sacrificing reference accuracy.

Can the MAX6023EBT21 be used in applications requiring operation below –40°C?

No-the MAX6023EBT21 is characterized and guaranteed only over the extended industrial temperature range of –40°C to +85°C. Its electrical specifications-including initial accuracy, tempco, and dropout voltage-are not validated below –40°C. For cryogenic applications, alternative references with wider temperature ratings (e.g., LT6655) should be evaluated.