MAX6021BEUR+T

Overview

The MAX6021BEUR+T is a precision, low-power, low-dropout series voltage reference manufactured by Analog Devices Inc. It provides a fixed output voltage of 2.048V and operates within an input voltage range of 2.5V to 12.6V. The device features a maximum initial accuracy of 0.39% and a temperature coefficient of 30ppm/°C across the -40°C to +85°C operating range. Quiescent supply current is limited to 35μA with a variation of only 0.8μA/V against supply changes. It supports ±500μA load current sourcing and sinking, maintains stability with capacitive loads up to 2.2nF, and utilizes a SOT-23-3 surface-mount package.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors for high precision
• Series-mode topology eliminates the need for external biasing resistors required by shunt references
• Internally compensated design ensures stability without requiring external compensation capacitors
• Ultra-low quiescent supply current that remains virtually independent of the input supply voltage

Applications

• Hand-Held Equipment
• Data Acquisition Systems
• Industrial and Process-Control Systems
• Battery-Operated Equipment
• Hard-Disk Drives

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the 'B' grade designation corresponds to the 0.39% maximum initial accuracy specification rather than the tighter 'A' grade variant. Ensure the '+T' suffix aligns with RoHS compliance requirements for your manufacturing process. Cross-reference the manufacturer part number directly with official Analog Devices documentation to validate availability status.

Selection Notes

Select this component when a fixed 2.048V reference is required in space-constrained designs utilizing the SOT-23-3 footprint. It is suitable for applications demanding minimal board area due to the elimination of external capacitors. Consider this device for battery-powered systems where low quiescent current and supply-independent operation are critical for maximizing efficiency and extending operational life.

Part Context

This component belongs to the MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/MAX6045/MAX6050 family of precision voltage references. All members share identical pinouts, packages, and core architectural features, differing primarily in their fixed output voltage levels. The MAX6021 specifically targets the 2.048V output requirement common in data conversion circuits.

Replacement Considerations

MAX6021AEUR+T

FAQ

Does the MAX6021BEUR+T require an external capacitor for frequency stability?

No, the device is internally compensated and stable with capacitive loads ranging from 0 to 2.2nF.

How does the supply current behave relative to input voltage changes?

The quiescent supply current is virtually independent of the supply voltage, exhibiting only a 0.8μA/V variation.