MAX6138CEXR41

Overview

The MAX6138CEXR41 is a precision, two-terminal shunt mode bandgap voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 4.096V and is housed in a subminiature 3-pin SC-70 surface-mount package measuring 1.8mm x 1.8mm. The device features a temperature coefficient of 25ppm/°C and an initial accuracy grade of 0.5%. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Laser-trimmed resistors ensure precise initial accuracy for stable performance.
• Subminiature SC-70 package offers significant size reduction compared to SOT23 devices.
• Two-terminal shunt architecture simplifies circuit design.

Applications

• Space-critical applications requiring minimal footprint
• Portable electronic devices with limited board space
• Precision measurement systems

Procurement Notes

Verify the specific suffix 'C' indicates the 0.5% accuracy grade during procurement. Confirm the 'EXR' designation corresponds to the tape-and-reel packaging format required for automated assembly processes. Ensure compatibility with the 4.096V output requirement for the target application.

Selection Notes

Select this component when a compact, low-cost shunt voltage reference is needed. The 0.5% accuracy suits general-purpose applications where tighter tolerances are not critical. Consider the 25ppm/°C drift for thermal environments outside standard ranges.

Part Context

This part belongs to the MAX6138 family of shunt voltage references. The family includes variants with different output voltages such as 1.2205V, 2.048V, 2.5V, 3.0V, 3.3V, and 5.0V. Accuracy grades range from 0.1% to 0.5%, with the 'C' suffix denoting the 0.5% tier.

Replacement Considerations

Direct substitutes include other MAX6138 variants with matching 4.096V output and SC-70 packaging, such as MAX6138BEXR41 or MAX6138AEXR41, depending on required accuracy levels.