DS2890X-000

Digital Potentiometers Overview

The DS2890X-000 is a single-element, linear-taper digital potentiometer featuring 256 wiper positions and a 100 kΩ resistance value. It operates via a minimal 1-Wire bus interface, allowing control and reading of the wiper position through a single data line. The device supports potentiometer terminal working voltages up to 11V, which are independent of the 2.8V to 6.0V auxiliary supply voltage (VDD). Key features include a unique factory-lasered 64-bit registration number for absolute identity, support for Overdrive mode boosting communication speed to 142 kbits per second, and compatibility with multi-drop networks.

Digital Potentiometers Feature Summary

• Single element 256-position linear taper potentiometer with 100 kΩ resistance
• Potentiometer terminals support working voltages up to 11V, independent of VDD
• Controlled and read over a minimal 1-Wire bus interface
• Unique factory lasered 64-bit registration number for error-free selection

Digital Potentiometers Applications

• Industrial control systems requiring remote resistance adjustment
• Multi-drop 1-Wire network environments needing independent device operation
• Applications necessitating variable resistor configurations without external mechanical components

Digital Potentiometers Procurement Notes

Verify the specific package type required, as the DS2890 family includes TO-92 and 6-pin TSOC variants. Confirm availability status, as some listings indicate discontinued or limited stock conditions. Ensure the ordering suffix matches the desired packaging format, such as tape and reel options if available for the specific variant.

Digital Potentiometers Selection Notes

Select the DS2890 when a linear response curve is required for the application. Ensure the system design accommodates the 1-Wire protocol overhead and provides appropriate pull-up resistors (1.5 kΩ to 5 kΩ) for reliable communication. Consider the charge pump requirements; enabling it requires an external VDD supply to support full terminal-to-terminal wiper output ranges.

Digital Potentiometers Part Context

The DS2890 belongs to the 1-Wire Digital Potentiometer family from Analog Devices/Maxim Integrated. It integrates a 1-Wire Function Controller, Potentiometer Controller, and 64-bit ROM into a single chip. This integration allows for simplified hardware interfaces compared to traditional digital potentiometers that require multiple GPIO pins for SPI or I2C communication.

Digital Potentiometers Replacement Considerations

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