MAX6138BEXR21+

Overview

The MAX6138BEXR21+ is a shunt voltage reference IC manufactured by Analog Devices Inc. (Maxim Integrated). It provides a fixed output voltage of 2.048 V with an initial accuracy of 0.1% and a temperature coefficient of 4 ppm/°C. The device operates within a supply current range up to a maximum shunt current of 15 mA. It functions reliably across an extended industrial temperature range from -40°C to +85°C. The component is housed in a compact SC-70-3 surface-mount package, designed for space-constrained applications requiring high precision.

Feature Summary

• High precision voltage regulation with 0.1% initial accuracy
• Low temperature drift characteristic of 4 ppm/°C
• Compact SC-70-3 surface-mount packaging

Applications

• Precision analog-to-digital converter (ADC) references
• Data acquisition systems requiring stable voltage sources
• Portable instrumentation with strict size constraints

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances and thermal characteristics. Ensure the procurement channel provides traceable components compliant with RoHS standards. Cross-reference the part number with the latest datasheet revision to validate pinout compatibility and operational limits before integration into design specifications.

Selection Notes

Select this component when application requirements demand sub-millivolt stability and minimal thermal drift over varying environmental conditions. The low initial error rate makes it suitable for high-resolution measurement circuits. Evaluate the SC-70-3 footprint availability against board layout constraints to ensure proper thermal dissipation and mechanical fit within the target assembly.

Part Context

This component belongs to the MAX6138 series of shunt voltage references, which are engineered for applications needing precise, stable voltage levels in small form factors. The series typically offers various output voltages and accuracy grades, allowing designers to balance performance requirements with spatial limitations in modern electronic devices.

Replacement Considerations

Consult official substitution guides for compatible parts within the MAX6138 family or equivalent precision references from other manufacturers. Verify that alternative components match the 2.048 V output, 0.1% accuracy, and SC-70-3 package dimensions to ensure direct interchangeability without circuit redesign.