DS1867S-050/T&R

Digital Potentiometers Overview

The DS1867S-050/T&R is a dual digital potentiometer with EEPROM, manufactured by Analog Devices Inc./Maxim Integrated. It features two digitally controlled 256-position potentiometers with a standard resistance of 50 kΩ. The device maintains wiper positions in the absence of power via nonvolatile memory. Control and communication are handled through a 3-wire serial interface (RST, CLK, DQ). It operates from single 5V or ±5V supplies within an industrial temperature range of -40°C to +85°C. Available in 16-pin SOIC packages.

Digital Potentiometers Feature Summary

• Dual 256-position digitally controlled potentiometers
• Nonvolatile wiper settings maintained by EEPROM
• 3-wire serial control interface for read/write operations
• Stacked configuration capability for increased total resistance

Digital Potentiometers Applications

• Inverting variable gain amplifiers
• Fixed gain attenuators
• Cascaded multi-device control systems

Digital Potentiometers Procurement Notes

Verify package type and suffix against official documentation. Confirm supply voltage requirements and operating temperature range match application needs. Ensure serial interface timing constraints are met for reliable data transmission.

Digital Potentiometers Selection Notes

Select based on required resistance value (10k, 50k, 100k) and package style (SOIC, TSSOP, DIP). Consider stacking capability if higher resistance is needed. Verify EEPROM endurance requirements and power-down timing specifications for nonvolatile storage reliability.

Digital Potentiometers Part Context

The DS1867 series serves as the nonvolatile counterpart to the DS1267 digital potentiometer family. It integrates EEPROM to retain settings across power cycles, distinguishing it from volatile alternatives. The 'S' indicates surface mount packaging, while '/T&R' denotes tape and reel delivery format.

Digital Potentiometers Replacement Considerations

DS1267S-100+T&R: Volatile version without EEPROM retention. DS1867N-100: PDIP package variant. Verify pin compatibility and nonvolatile requirements when substituting.