MAX6331LUR+

Overview

The MAX6331LUR+ is a precision shunt voltage reference integrated circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a fixed output voltage of 3V with an initial accuracy tolerance of ±1.3%. The device operates within a supply current range defined by a maximum cathode current of 60 µA and supports a load current up to 50 mA. It is housed in a compact SOT-23-3 surface-mount package and is rated for operation across an extended temperature range from -40°C to +85°C.

Feature Summary

• Provides a stable, fixed 3V reference output suitable for precision analog circuits
• Features low temperature coefficient characteristics for consistent performance across varying thermal conditions
• Designed for low-power applications with minimal quiescent current consumption

Applications

• Precision data acquisition systems requiring stable voltage references
• Battery-powered instrumentation where low power consumption is critical
• Portable medical devices needing accurate signal conditioning references

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific lot traceability requirements before procurement. Ensure storage conditions adhere to moisture sensitivity level guidelines to maintain package integrity prior to assembly.

Selection Notes

Select this component when a fixed 3V reference with high initial accuracy is required in space-constrained designs. Consider the SOT-23-3 footprint for board layout compatibility. Evaluate thermal management needs based on the specified operating temperature range and ensure the application load does not exceed the maximum cathode current specifications.

Part Context

This part belongs to the MAX6330/MAX6331 family of micropower shunt voltage references. These devices are engineered to replace traditional Zener diodes in applications demanding superior stability and lower noise. The series offers various fixed voltage options and packaging configurations to support diverse embedded system design requirements.

Replacement Considerations

Check for pin-compatible alternatives within the same Maxim Integrated voltage reference portfolio. Verify that substitute components match the 3V output requirement and ±1.3% tolerance specification. Ensure any replacement maintains the SOT-23-3 package form factor for direct board integration.