MAX6133AASA25+

Overview

The MAX6133AASA25+ is a high-precision, low-power series voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output of 2.5V with an initial accuracy of ±0.04% and a maximum temperature coefficient of 3ppm/°C in the SO package. The device operates within a supply voltage range of 2.7V to 12.6V, drawing a typical quiescent current of 40µA. It features a low dropout voltage of 200mV (max) and supports a source current up to 15mA. The component is housed in an 8-pin SOIC package and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Utilizes bandgap technology with laser-trimmed thin-film resistors for high stability and low noise performance.
• Features a low dropout voltage allowing operation with minimal input-to-output voltage difference.
• Consumes very low quiescent supply current that remains virtually independent of the supply voltage.
• Includes post-package trimming to guarantee excellent 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 '25' confirms the 2.5V output option when sourcing this part. Confirm the 'SO' designation matches the required 8-pin surface mount package type. Ensure the 'A' grade selection aligns with the necessary 3ppm/°C temperature coefficient requirement. Check for RoHS compliance status if environmental regulations apply to the target assembly.

Selection Notes

Select this component when a fixed 2.5V precision reference is required with tight initial accuracy tolerances. The low power consumption makes it suitable for battery-operated portable devices where efficiency is critical. The wide operating temperature range ensures reliability in harsh industrial environments. Consider the low dropout characteristic for applications with limited headroom between supply and reference voltages.

Part Context

This device belongs to the MAX6133 family of high-precision voltage references. The family includes variants with different output voltages and packaging options such as µMAX. The MAX6133 series is designed to replace standard shunt references while saving system power and external components. It is widely used in data acquisition and communication systems requiring stable reference voltages.

Replacement Considerations

Direct substitutes include other MAX6133 variants with different output voltages or packages, such as MAX6133AASA30+ for 3.0V output. Cross-family replacements may require verification of pin compatibility and electrical parameter alignment.