AD5144TRUZ10-EP-R7

Overview

The AD5144TRUZ10-EP-R7 is a quad-channel, nonvolatile digital potentiometer from Analog Devices' Enhanced Product line. It features four independent 256-position resistive networks with a nominal resistance of 10 kΩ and ±8% tolerance. The device operates on a single supply (2.3 V to 5.5 V) or dual supply (±2.25 V to ±2.75 V), with an independent logic supply range of 1.8 V to 5.5 V. It utilizes an SPI interface for control and data storage in EEPROM, ensuring retention for 50 years. Designed for military environments, it supports temperatures from −55°C to +125°C.

Feature Summary

• Quad-channel architecture with 256 positions per channel and 10 kΩ nominal resistance.
• Nonvolatile EEPROM memory retains settings for 50 years with 100 kcycles endurance at high temperature.
• Enhanced Product qualification supporting defense and aerospace applications (AQEC standard).
• High bandwidth of 3 MHz and fast start-up time of 75 µs.

Applications

• Missiles and munitions systems
• Avionics and unmanned aerial systems
• Programmable filters, delays, and time constants
• Programmable power supplies

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details. The source material lists this part number under the Ordering Guide as a RoHS-compliant component in the RU-20 package. Confirm that the intended application meets the AQEC standard requirements associated with the Enhanced Product designation.

Selection Notes

Select this component when military-grade reliability and wide temperature operation are required. The 10 kΩ resistance option provides a maximum continuous current of ±6 mA. Ensure the system design accommodates the SPI interface timing specifications and the independent VLOGIC supply voltage range of 1.8 V to 5.5 V for proper logic level compatibility.

Part Context

This part belongs to the AD5144-EP Enhanced Product series, distinct from commercial variants by its controlled manufacturing baseline and qualification data availability. It shares the core functional block diagram with the standard AD5144 but is optimized for harsh environments. The TRUZ suffix indicates the TSSOP-20 package type, while the -R7 suffix typically denotes reel packaging, though specific pack quantities should be verified in the latest datasheet.

Replacement Considerations

Direct replacements within the same family include the AD5144TRUZ10-EP without the reel suffix if tube packaging is acceptable. For non-military applications, the commercial AD5144BRUZ10 may serve as a functional substitute, provided the operating temperature range and reliability standards do not require the EP variant.