MAX6225ACSA+

Overview

The MAX6225ACSA+ is a low-noise, precision voltage reference utilizing buried-zener technology. It provides a fixed output of 2.500V with an initial accuracy of ±0.04% and a maximum temperature coefficient of 2.0ppm/°C. The device operates within an input voltage range of 8V to 36V and supports source/sink currents up to 15mA. It features a supply current of approximately 3mA and operates in the commercial temperature range of 0°C to +70°C. Packaged in an 8-pin SOIC, it offers excellent line and load regulation for high-resolution data conversion systems.

Feature Summary

• Buried-zener technology ensures extremely low noise performance and high stability.
• Provides industry-standard pinout compatibility for easy integration.
• Supports optional external trimming and noise reduction capabilities.
• Maintains stability across all capacitive loads without oscillation.

Applications

• High-Resolution Analog-to-Digital and Digital-to-Analog Converters
• High-Accuracy Reference Standards
• Digital Voltmeters
• Precision Current Sources

Procurement Notes

Verify the specific suffix 'CSA+' indicates the commercial temperature range (0°C to +70°C) and SOIC package. Confirm RoHS compliance status as indicated by the '+' designation. Ensure the required temperature coefficient and accuracy meet system specifications before procurement.

Selection Notes

Select this component when a fixed 2.5V reference with low drift is required. Compare against MAX6241 or MAX6250 if different voltage levels are needed. Consider the A-grade accuracy versus B-grade options if tighter tolerances are not necessary for the application.

Part Context

Part of the MAX6225/MAX6241/MAX6250 family of low-noise precision voltage references. These devices share similar architectures but differ in fixed output voltages (2.5V, 4.096V, and 5V respectively). The family utilizes CMOS processes and buried-zener technology for optimal noise and stability characteristics.

Replacement Considerations

Direct replacements include other variants within the MAX6225 series such as MAX6225BCSA+ for relaxed accuracy requirements. Cross-family alternatives like the MAX6226 may be considered for different form factors or extended temperature ranges.

FAQ

How can the output noise be reduced?

Connect a 1µF capacitor between the NR pin and GND to augment wideband noise reduction.

Is the device stable with capacitive loads?

Yes, the MAX6225ACSA+ is stable with capacitive load values from 0µF to 100µF for all load currents.