AD5274BRMZ-100-RL7

Digital Potentiometers Overview

The AD5274BRMZ-100-RL7 is a single-channel digital rheostat featuring 256-position resolution and an I²C-compatible interface. It offers nominal resistance values of 20 kΩ, 50 kΩ, or 100 kΩ with a maximum ±1% resistor tolerance error in R-Perf mode. The device includes 50-times programmable (50-TP) nonvolatile memory for wiper setting retention. Operating on a single supply from 2.7 V to 5.5 V or dual supplies of ±2.5 V to ±2.75 V, it supports standard (100 kHz) and fast (400 kHz) clock frequencies. The component is housed in a compact 10-lead MSOP package and operates within an extended industrial temperature range of −40°C to +125°C.

Digital Potentiometers Feature Summary

• 256-position resolution with guaranteed ±1% end-to-end resistor tolerance error in R-Perf mode
• 50-times programmable (50-TP) nonvolatile memory for permanent wiper position storage
• I²C-compatible serial interface supporting standard and fast modes with wiper readback capability
• Low power consumption with supply current of 1 µA and operation from 2.7 V to 5.5 V

Digital Potentiometers Applications

• Mechanical rheostat replacements
• Op-amp variable gain control
• Instrumentation gain and offset adjustment
• Programmable voltage to current conversions
• Sensor calibration

Digital Potentiometers Procurement Notes

Verify the specific nominal resistance value (20 kΩ, 50 kΩ, or 100 kΩ) required for the application, as the base model number does not specify the resistance. Confirm the package type matches the design, as the AD5274 series is also available in LFCSP. Ensure the ordering suffix corresponds to the desired tape and reel quantity if applicable. Check for RoHS compliance status through official manufacturer documentation before procurement.

Digital Potentiometers Selection Notes

Select this component when high precision is required, leveraging the 1% resistor tolerance feature which simplifies open-loop applications. Choose based on the necessary resolution; note that the AD5272 variant offers 1024 positions if higher granularity is needed. Consider the I²C address configuration via the ADDR pin if multiple devices share the bus. Verify thermal requirements, as the MSOP package has a junction-to-ambient thermal resistance of 161.8 °C/W.

Digital Potentiometers Part Context

This part belongs to the AD5272/AD5274 family of digital rheostats manufactured by Analog Devices Inc. The AD5274 specifically provides 256 taps, distinguishing it from the 1024-tap AD5272. Both variants share identical electrical characteristics regarding tolerance, memory, and interface protocols, differing primarily in resolution. The BRMZ suffix indicates the commercial temperature grade and MSOP packaging.

Digital Potentiometers Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.