MAX6225ACPA

Overview

The MAX6225ACPA+ is a low-noise, precision voltage reference utilizing buried-zener technology. It provides fixed output voltages of +2.5V, +4.096V, or +5V with an initial accuracy of ±0.02% and a temperature coefficient as low as 1ppm/°C. The device supports source and sink currents up to 15mA and operates within an input voltage range of 8V to 36V. It consumes 18mW of power and functions across a temperature range of -40°C to +85°C in an 8-pin PDIP package.

Feature Summary

• Buried-zener architecture for minimal noise performance
• Extremely low temperature coefficient for high stability
• Guaranteed load regulation for both source and sink currents
• Stable operation with all capacitive loads

Applications

• High-resolution data-conversion systems
• Precision digital-to-analog converter (DAC) applications
• Analog interface ADC input translators
• Low-drift measurement instrumentation

Procurement Notes

Verify the specific suffix configuration against official Analog Devices documentation to confirm output voltage, accuracy grade, and package type. Confirm RoHS compliance status and current lifecycle stage, as older variants may be discontinued. Ensure the ordering part number matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when ultra-low noise and high precision are critical for signal integrity. The buried-zener design offers superior long-term stability compared to bandgap references. Consider the 15mA drive capability for direct sensor interfacing without additional buffering. Verify that the input voltage range accommodates the system supply rails while maintaining adequate dropout voltage.

Part Context

The MAX6225 series belongs to Maxim Integrated's family of low-noise precision voltage references. It shares pinout compatibility with other industry-standard references but distinguishes itself through buried-zener technology. This series is designed to replace standard LDOs in precision applications requiring lower noise and better temperature stability.

Replacement Considerations

Direct replacements include MAX6225ACSA+, MAX6225AESA+, and MAX6225AEPA+. These variants share identical functionality but differ in package type (SOIC, TSSOP, DIP) and operating temperature ranges. Verify pinout compatibility before substitution.