MAX6133BASA50+T

Overview

The MAX6133BASA50+T is a high-precision, low-power series voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed 5.000V output with a maximum initial accuracy of ±0.08% and a temperature coefficient of 5ppm/°C over the -40°C to +125°C range. The device operates on a supply voltage between 5.2V and 12.6V, consuming only 40µA of quiescent current. It features a low dropout voltage of 200mV (max) at 10mA load and supports source currents up to 15mA. Packaged in an 8-pin SOIC, it utilizes bandgap technology for excellent noise performance and stability.

Feature Summary

• Bandgap-based series-mode architecture ensuring low-noise precision and minimal external component requirements
• Laser-trimmed thin-film resistors combined with post-package trimming for superior initial accuracy
• Low quiescent supply current that remains virtually independent of input voltage variations
• Integrated thermal hysteresis compensation for stable output across wide temperature cycles

Applications

• Precision regulators requiring tight voltage tolerance
• High-resolution A/D and D/A converter reference sources
• Portable and battery-powered communication equipment
• Hand-held instruments demanding low power consumption

Procurement Notes

Verify the specific suffix 'BASA50' corresponds to the B-grade accuracy (±0.08%) and 5V output option. Confirm the package type matches the required PCB footprint. Check for RoHS compliance status as indicated in official documentation. Ensure the operating environment stays within the specified -40°C to +125°C temperature range for guaranteed performance.

Selection Notes

Select this component when a fixed 5V reference with moderate precision is needed. The B-grade offers lower cost than A-grade while maintaining good stability. Consider the 200mV dropout voltage against your minimum input supply. Evaluate the 40µA current draw against system power budgets. Compare line regulation specs if input voltage fluctuates significantly.

Part Context

This part belongs to the MAX6133 family of low-dropout voltage references. The family includes variants with different output voltages (2.5V, 3.0V, 4.096V, 5.0V) and accuracy grades (A and B). The 'SO' designation indicates the 8-pin Small Outline package. Other family members include µMAX packages for smaller form factors.

Replacement Considerations

Direct substitutes within the same family include MAX6133AASA50+T for higher accuracy or other voltage outputs like MAX6133BASA25+T. Cross-family replacements require matching voltage, package, and temperature coefficient specifications.