Analog Devices Inc./Maxim Integrated MAX6021BEUR-TG097

Overview

MAX6021BEUR-TG097 from Maxim Integrated is a precision, low-dropout, micropower series-mode voltage reference in SOT23-3 package, delivering 2.048V ±0.39% initial accuracy with <20ppm/°C temperature coefficient over –40°C to +85°C. It sources/sinks ±500μA, exhibits 100mV dropout at full load, and draws only 35μA max quiescent current - ideal for battery-powered data acquisition and industrial sensor front-ends.

For engineers reviewing the MAX6021BEUR-TG097 datasheet, MAX6021BEUR-TG097 pinout, MAX6021BEUR-TG097 application, or MAX6021BEUR-TG097 equivalent, key selection criteria include output stability under capacitive loads up to 2.2nF, supply-current independence from VIN (0.8μA/V variation), low-noise performance (35μV_p-p, 0.1Hz–10Hz), and compatibility with space-constrained, low-voltage systems requiring high long-term drift stability (50ppm/1000h).

Technical Context

The MAX6021BEUR-TG097 uses a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <20ppm/°C tempco and 0.39% initial accuracy. Its series-mode architecture eliminates external biasing resistors and compensation capacitors while supporting bidirectional 500μA load current.

It operates from 2.5V to 12.6V input, maintains stability with 0–2.2nF load capacitance, and delivers 84dB ripple rejection at 120Hz. Turn-on settling time is 70μs to 0.1% with 50pF load, and line regulation is 10–100μV/V across its input range.

Key Specifications

Pinout & Package

SOT23-3 surface-mount package (3-pin, 1.3mm × 2.9mm footprint), RoHS-compliant, top-marked FZDF.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6021AEUR-T, MAX6021BEUR-TG097 trades 0.15% initial accuracy for lower cost while retaining identical thermal and dynamic performance; versus REF3020AIDBZR, it delivers 2.5× better tempco and 30% lower quiescent current - making it superior for battery life and temperature-critical embedded systems.

Availability

MAX6021BEUR-TG097 is available at Aetrix Electronics and suitable for hand-held test equipment, industrial process-control transmitters, and battery-operated environmental monitors requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for MAX6021BEUR-TG097 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 high-performance analog and mixed-signal ICs for precision, power, and interface applications in industrial, medical, and communications systems.

The MAX6021BEUR-TG097 belongs to the MAX60xx family of micropower series voltage references, engineered specifically for low-voltage, battery-constrained systems demanding high accuracy, low drift, and minimal board area.

FAQ

What is the maximum load current the MAX6021BEUR-TG097 can source or sink?

The MAX6021BEUR-TG097 can source and sink up to ±500μA while maintaining specified output voltage accuracy and stability. This bidirectional capability supports both active pull-up and pull-down configurations in ratiometric sensor interfaces and programmable gain amplifier references. Exceeding ±500μA may increase dropout voltage beyond 200mV and degrade regulation performance. The MAX6021BEUR-TG097 datasheet confirms this rating across the full –40°C to +85°C operating range.

Does the MAX6021BEUR-TG097 require an external output capacitor for stability?

No, the MAX6021BEUR-TG097 is internally compensated and stable with output capacitance ranging from 0 to 2.2nF - no external capacitor is required for basic stability. An optional capacitor may improve transient response during load or supply steps, but adds no functional necessity. This eliminates layout constraints and saves PCB area, especially valuable in wearables and miniature sensor modules where the MAX6021BEUR-TG097 is commonly deployed.

What is the supply voltage range for the MAX6021BEUR-TG097?

The MAX6021BEUR-TG097 operates from a minimum input voltage of 2.5V up to 12.6V. Its low dropout of 100mV at 500μA load means it functions reliably even when VIN is as low as 2.15V - enabling use with single-cell alkaline, NiMH, or LiFePO₄ batteries. The supply current remains stable across this range, varying by only 0.8μA per volt, ensuring consistent performance regardless of battery state-of-charge. This behavior is explicitly characterized in the MAX6021BEUR-TG097 Electrical Characteristics table.

How does the MAX6021BEUR-TG097 compare to shunt-mode references in terms of efficiency?

Unlike shunt-mode references that waste supply current through a series resistor, the MAX6021BEUR-TG097's series architecture draws only 35μA quiescent current - independent of load - maximizing battery life. Shunt references must be biased for worst-case load, wasting current continuously; the MAX6021BEUR-TG097 delivers current only when demanded. This results in up to 70% lower average power in intermittent-sampling applications, a key advantage confirmed in the MAX6021BEUR-TG097 Applications Information section.

Is the MAX6021BEUR-TG097 pin-compatible with other members of the MAX60xx family?

Yes, all MAX60xx devices including MAX6021BEUR-TG097 use identical SOT23-3 packaging and pinout (IN, OUT, GND), enabling drop-in replacement across output voltages (1.247V to 5.000V). However, input voltage minimums differ: MAX6021BEUR-TG097 requires VIN ≥2.5V, while higher-output variants like MAX6041 require VIN ≥4.296V. Always verify input compliance per device - the MAX6021BEUR-TG097 datasheet specifies its exact operating window to prevent undervoltage lockout.