MAX6325EPA+

Overview

The MAX6325EPA+ is a low-noise, precision voltage reference utilizing buried-zener technology. It provides a fixed 2.5V output with ±0.02% initial accuracy and a typical temperature coefficient of 0.5ppm/°C (maximum 1.5ppm/°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. Key electrical parameters include a maximum supply current of 3.3mA, output noise of 1.5µVp-p (0.1Hz to 10Hz), and long-term stability of 30ppm/1000hr. It functions reliably across a temperature range of -40°C to +85°C in an 8-pin Plastic DIP package.

Feature Summary

• Utilizes buried-zener technology for ultra-low noise performance and high precision.
• Features industry-standard pinout with optional external trimming and noise reduction capabilities.
• Provides excellent transient response and remains stable for all capacitive loads.

Applications

• High-resolution analog-to-digital and digital-to-analog converters
• High-accuracy industrial and process control systems
• Digital voltmeters and ATE equipment

Procurement Notes

Verify the specific suffix 'EPA' confirms the -40°C to +85°C operating range and 8-pin PDIP package. Confirm RoHS compliance status as indicated on official documentation. Ensure compatibility with existing PCB footprints for through-hole mounting. Validate that the component meets the required line and load regulation specifications for the target application environment.

Selection Notes

Select this component when designing high-resolution data-conversion systems requiring low noise and high accuracy. The buried-zener architecture offers superior stability compared to bandgap references. Consider the 15mA sourcing and sinking capability for driving moderate loads without external buffering. The option for external trimming allows fine-tuning of the output voltage if necessary.

Part Context

The MAX6325EPA+ belongs to the MAX6325/MAX6341/MAX6350 family of 1ppm/°C, low-noise voltage references. While other variants in the series provide different fixed outputs such as 4.096V or 5V, the MAX6325 is specifically configured for a 2.5V output. All members share similar low-power characteristics and precision features suitable for demanding analog applications.

Replacement Considerations

Direct functional substitutes within the same family include the MAX6341EPA+ (4.096V) and MAX6350EPA+ (5V), provided the output voltage difference is acceptable. Other packages like the SOIC variant (MAX6325ESA+) offer identical electrical performance in a surface-mount format.