MAX6325CSA+T

Overview

The MAX6325CSA+T is a low-noise, precision voltage reference utilizing buried-zener technology. It provides a fixed 2.5V output with an initial accuracy of ±0.02% and a maximum temperature coefficient of 1ppm/°C. The device operates within an input voltage range of 8V to 36V and supports load regulation for source and sink currents up to 15mA. It features extremely low noise performance, specified at 1.5µVp-p from 0.1Hz to 10Hz. The component is housed in an 8-pin SO package and is rated for operation between 0°C and +70°C.

Feature Summary

• Utilizes buried-zener technology for ultra-low noise performance
• Offers optional external trimming and noise reduction capabilities
• Provides excellent transient response and stability for all capacitive loads

Applications

• High-resolution analog-to-digital converters
• Digital-to-analog converters
• High-accuracy industrial and process control systems
• Precision current sources

Procurement Notes

Verify the specific suffix 'CSA' confirms the commercial temperature range (0°C to +70°C) and SOIC-8 package type. Ensure compatibility with the required input voltage range of 8V to 36V. Confirm that the standard ±0.02% accuracy meets system requirements without needing external calibration. Check for RoHS compliance status if mandated by project specifications.

Selection Notes

Select this component when high precision and low noise are critical for data conversion applications. The buried-zener architecture ensures superior long-term stability compared to bandgap references. Consider the 15mA sourcing and sinking capability for driving moderate loads directly. Evaluate the need for external trimming or noise reduction features based on specific circuit constraints.

Part Context

This part belongs to the MAX6325/MAX6341/MAX6350 family of precision voltage references. While the MAX6341 offers 4.096V and the MAX6350 provides 5V, the MAX6325 is specifically configured for 2.5V outputs. All variants share identical pinouts and feature sets, differing primarily in their nominal output voltages and slight variations in noise characteristics.

Replacement Considerations

Direct functional substitutes within the same series include the MAX6341ESA+T and MAX6350ESA+T, provided the different nominal output voltages (4.096V and 5V respectively) are acceptable for the application design.

FAQ

How can the output noise be reduced?

Connect a 1µF capacitor to the NR (Noise Reduction) pin to augment wideband noise reduction.

Is the device stable with capacitive loads?

Yes, the MAX6325 is stable with capacitive load values ranging from 0µF to 100µF across all load current conditions.