ADR441TRZ-EP-R7

Overview

The ADR441TRZ-EP-R7 is an enhanced product ultralow noise LDO XFET voltage reference with a nominal output of 2.5 V. It features an initial accuracy of ±1 mV (0.04%) and a temperature drift of 5 ppm/°C across the military range of −55°C to +125°C. The device operates on a supply voltage from 3 V to 18 V with a minimum headroom of 500 mV. It provides high output current capability, sourcing up to +10 mA and sinking up to −5 mA. Quiescent current is typically 3.75 mA. Noise performance includes 1.2 µV p-p (0.1 Hz to 10 Hz) and 48 nV/√Hz at 1 kHz.

Feature Summary

• XFET technology minimizes voltage change vs. temperature nonlinearity for superior stability.
• Supports defense and aerospace applications under AQEC standards with controlled manufacturing baselines.
• Includes a trim terminal allowing output voltage adjustment over a 0.5% range without compromising performance.

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required package option and RoHS compliance status. Confirm the military temperature range and enhanced product qualification data availability directly with the manufacturer or authorized distributors before finalizing procurement specifications.

Selection Notes

Select this component when low dropout operation and ultralow noise are critical requirements. The 8-lead narrow SOIC package suits space-constrained designs. Ensure input voltage remains within the 3 V to 18 V operating range while maintaining the specified 500 mV headroom for optimal regulation.

Part Context

This part belongs to the ADR441-EP series of enhanced product voltage references. It utilizes Analog Devices' extra implanted junction FET technology to achieve performance levels exceeding standard buried Zener references. The EP designation indicates adherence to stricter quality control and traceability standards suitable for demanding environments.

Replacement Considerations

ADR441ARZ-EP-R7

FAQ

What is the maximum output current capability?

The device can source up to +10 mA and sink up to −5 mA.

How does the trim terminal function?

The TRIM pin allows adjustment of the output voltage over a 0.5% range without degrading the device's performance characteristics.