AD5271BRMZ-20

Digital Potentiometers Overview

The AD5271BRMZ-20 is a single-channel digital rheostat featuring 256-position resolution and a nominal resistance of 20 kΩ. It utilizes an SPI-compatible interface for control and includes 50-times programmable (50-TP) nonvolatile memory to retain wiper settings across power cycles. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or dual supplies of ±2.5 V to ±2.75 V. It guarantees a maximum resistor tolerance error of ±1% in performance mode and maintains a temperature coefficient of 5 ppm/°C in rheostat mode. The component is housed in a compact 10-lead MSOP package.

Digital Potentiometers Feature Summary

• 256-position resolution with 20 kΩ nominal resistance
• SPI-compatible serial interface with wiper readback capability
• 50-times programmable (50-TP) nonvolatile memory for persistent storage
• ±1% maximum resistor tolerance error in R-Perf Mode

Digital Potentiometers Applications

• Mechanical rheostat replacements
• Op-amp variable gain control
• Instrumentation gain and offset adjustment
• Programmable filters, delays, and time constants

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure compatibility with the target system's voltage levels and SPI timing requirements before integration.

Digital Potentiometers Selection Notes

Select this model for applications requiring precise analog resistance control without mechanical components. The 20 kΩ value suits moderate impedance circuits, while the 256 positions provide sufficient granularity for many calibration tasks. Consider the AD5270 if higher 10-bit (1024-position) resolution is required.

Digital Potentiometers Part Context

This component belongs to the AD527x family of digital rheostats, which integrates industry-leading variable resistor performance with nonvolatile memory. The AD5271 variant specifically offers 8-bit resolution compared to the 10-bit AD5270, providing a balance between cost, pin count, and precision for general-purpose analog signal conditioning.

Digital Potentiometers Replacement Considerations

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