MAX6034AEXR21+T

Overview

The MAX6034AEXR21+T is a precision, micropower, low-dropout series voltage reference housed in an SC70-3 package. It provides a fixed output voltage of 2.048V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 30ppm/°C. The device operates within an input voltage range of 2.5V to 5.5V, drawing a typical quiescent supply current of 90µA. It can source up to 1mA and sink up to 200µA of load current while maintaining stability with capacitive loads ranging from 0 to 1µF without requiring external compensation.

Feature Summary

• Features proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high precision
• Offers ultra-low supply current that remains virtually independent of the input supply voltage
• Eliminates the need for external compensation capacitors due to inherent frequency stability
• Provides low dropout voltage suitable for battery-powered applications

Applications

• Hand-held equipment
• Data-acquisition systems
• Industrial and process control systems
• Battery-operated equipment
• Hard-disk drives

Procurement Notes

Verify the component authenticity by checking the manufacturer's marking code AJH on the SC70-3 package. Confirm the part number suffix matches the specific output voltage and accuracy grade requirements. Ensure the operating environment stays within the specified -40°C to +85°C temperature range. Cross-reference the datasheet revision to ensure compatibility with design specifications.

Selection Notes

Select this component when space-constrained designs require a precise voltage reference in a miniature surface-mount package. It is suitable for applications needing stable performance across varying supply voltages without external components. Consider the 2.048V output level and ±0.2% accuracy for data converter references or sensor biasing where low power consumption is critical.

Part Context

This device belongs to the MAX6034 family of precision voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family includes various output voltage options and accuracy grades, all sharing the same low-power, low-dropout architecture and SC70 packaging. It serves as a compact alternative to traditional shunt references by integrating regulation internally.

Replacement Considerations

Compatible substitutes within the MAX6034 family include MAX6034BEXR21+T, which offers ±0.4% accuracy instead of ±0.2%. Other family members like MAX6034AEXR25+T provide different fixed output voltages but maintain similar electrical characteristics and pin configurations.