MAX6133AASA50+

Overview

The MAX6133AASA50+ is a high-precision, low-power series voltage reference featuring bandgap technology. It provides a fixed 5V output with ±0.04% initial accuracy and a maximum temperature coefficient of 3ppm/°C. The device operates within an input voltage range of 5.2V to 12.6V, drawing a typical quiescent supply current of 40µA. It supports source currents up to 15mA and includes internal laser-trimmed thin-film resistors for stability. The component is housed in an 8-pin SO package and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Bandgap architecture ensures low noise performance and excellent long-term stability through laser-trimmed thin-film resistors.
• Low dropout capability allows operation with minimal voltage headroom relative to the output level.
• Quiescent supply current remains virtually independent of the input supply voltage, maximizing efficiency.
• Post-package trimming guarantees precise initial accuracy specifications.

Applications

• Precision regulators
• A/D and D/A converters
• Power supplies
• High-accuracy industrial and process control systems
• Hand-held instruments

Procurement Notes

Verify the specific suffix '50' confirms the 5.000V output option when sourcing this part. Confirm the 'A' grade designation matches the required ±0.04% accuracy and 3ppm/°C temperature coefficient specifications. Ensure the 'SA' suffix corresponds to the 8-pin SOIC package format required by the design. Check RoHS compliance status against current manufacturing revisions.

Selection Notes

Select this component when a fixed 5V precision reference is required with tight accuracy constraints. The low quiescent current makes it suitable for battery-powered applications where power conservation is critical. Verify that the input voltage range accommodates the system's minimum operating voltage while maintaining the specified dropout margin. Consider the thermal hysteresis characteristics if the application involves significant temperature cycling.

Part Context

This device belongs to the MAX6133 family of low-power, low-dropout voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family utilizes bandgap technology to deliver high precision in compact packages. Variants within the series offer different output voltages and packaging options, such as µMAX, to suit various space-constrained designs.

Replacement Considerations

Direct substitutes include other MAX6133 variants with different output voltages or packages, such as MAX6133AASA25+ or MAX6133BASA50+. Cross-family replacements require matching the 5V output, ±0.04% accuracy, and 8-SOIC footprint. Verify pin compatibility and electrical specifications before substitution.

FAQ

What is the maximum temperature coefficient for the A-grade SO package?

The maximum temperature coefficient for the A-grade SO package is 3ppm/°C over the -40°C to +85°C range.

Is an output capacitor required for stability?

Yes, the MAX6133 requires a minimum output capacitance of 0.1µF for stability.

How does the supply current behave with respect to input voltage?

The quiescent supply current is typically 40µA and is virtually independent of the supply voltage.