MAX6325CPA+

Overview

The MAX6325CPA+ is a buried-zener voltage reference providing a fixed 2.5V output in an 8-pin Plastic DIP package. It operates within an input voltage range of 8V to 36V and supports a supply current of approximately 3mA. The device guarantees ±0.02% initial accuracy with a maximum temperature coefficient of 1ppm/°C across the commercial operating temperature range of 0°C to +70°C. It features low noise performance, specifically 1.5µVp-p from 0.1Hz to 10Hz, and allows for external trimming and noise reduction.

Feature Summary

• Utilizes buried-zener technology to achieve extremely low noise performance and high precision.
• Offers optional external voltage trimming via the TRIM pin and wideband noise reduction via the NR pin.
• Provides excellent transient response and maintains stability for all capacitive loads up to 100µF.

Applications

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

Procurement Notes

Verify that the component matches the specific 'CPA' suffix configuration, which denotes the commercial temperature range and plastic DIP package. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure the part number corresponds to the exact 2.5V output variant within the MAX6325 family.

Selection Notes

Select this component when a fixed 2.5V precision reference is required in a through-hole package. Consider the MAX6341 or MAX6350 if alternative fixed voltages are needed. Evaluate the need for external trimming or noise reduction capabilities based on system sensitivity requirements.

Part Context

The MAX6325 belongs to a family of low-noise, precision voltage references manufactured by Maxim Integrated, now part of Analog Devices. This series includes variants with different fixed output voltages, such as the MAX6341 (4.096V) and MAX6350 (5V), sharing similar architectural features and performance characteristics.

Replacement Considerations

MAX6325EPA+

FAQ

How can the output noise be reduced?

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

Is the device stable with capacitive loads?

Yes, the device is stable for all capacitive load values ranging from 0µF to 100µF.