ADR441TRZ-EP

Overview

The ADR441TRZ-EP is an enhanced product XFET voltage reference featuring ultralow noise and high accuracy. It provides a fixed 2.500 V output with an initial accuracy of ±1 mV (0.04%) and a temperature drift of 5 ppm/°C over the military range of −55°C to +125°C. The device operates from a supply voltage of 3 V to 18 V with a low dropout headroom of 500 mV. It sources up to +10 mA and sinks up to −5 mA, while consuming approximately 3.75 mA quiescent current. Noise performance is 1.2 µV p-p (0.1 Hz to 10 Hz).

Feature Summary

• Utilizes XFET technology for superior noise performance compared to buried Zener references.
• Includes a dedicated trim terminal allowing output voltage adjustment over a 0.5% range without compromising performance.
• Supports defense and aerospace applications through controlled manufacturing baselines and qualification data availability.

Applications

• Precision data acquisition systems
• High resolution data converters
• Military communication equipment
• Avionics systems

Procurement Notes

Verify that the specific order includes the EP suffix to ensure compliance with the Enhanced Product specifications. Confirm that the application environment meets the military temperature range requirements of −55°C to +125°C. Ensure PCB thermal design accounts for the specified junction-to-ambient thermal resistance values to maintain reliability under operating conditions.

Selection Notes

Select this component when military-grade environmental resilience and strict quality control are required. The integrated trim pin offers flexibility for precise calibration needs. Verify that the input voltage range accommodates the minimum 500 mV headroom requirement relative to the load current demands.

Part Context

This part belongs to the ADR44x series of XFET voltage references. It shares core electrical characteristics with standard commercial variants but differs in its enhanced product status, which mandates controlled manufacturing sites and supports defense/aerospace qualification standards.

Replacement Considerations

ADR441BRZ

FAQ

What is the function of Pin 5?

Pin 5 is the TRIM terminal, used to adjust the output voltage over a 0.5% range without compromising performance.

How does the ADR441TRZ-EP handle unused pins?

Pins 1 and 8 are DNC (Do Not Connect), and Pins 3 and 7 are NIC (Not Internally Connected). They must not be connected to any circuit node.