DS1809U-010+

Digital Potentiometers Overview

The DS1809U-010+ is a nonvolatile digitally controlled potentiometer featuring 64 uniform wiper positions with linear taper. It operates from +4.5V to +5.5V supplies and maintains wiper position via an EEPROM cell array rated for over 50,000 writes. The device utilizes a contact-closure interface for control and includes two storage options: autostore during power-down or command-initiated storage. It provides a low-cost alternative to mechanical solutions in industrial temperature ranges (-40°C to +85°C).

Digital Potentiometers Feature Summary

• 64-position linear taper digital potentiometer with nonvolatile memory.
• Contact-closure interface (UC/DC inputs) requiring no external debounce circuitry.
• Dual wiper storage methods: autostore on power-down or command-initiated via STR pin.
• Operates within +4.5V to +5.5V supply voltage range.

Digital Potentiometers Applications

• Low-power portable or battery-powered applications.
• Electronic calibration of circuits replacing mechanical trimmers.
• Industrial systems requiring nonvolatile resistance adjustment.

Digital Potentiometers Procurement Notes

Verify the package type matches the specific suffix; 'U' indicates µSOP packaging while 'Z' indicates SO packaging. Confirm RoHS compliance status indicated by the '+' suffix. Check current availability as distribution may vary by region.

Digital Potentiometers Selection Notes

Select based on required resistance value; the '-010' suffix denotes 10kΩ. Ensure the application voltage falls between 4.5V and 5.5V. Consider the 64-tap resolution and ±20% tolerance when designing the circuit. Verify if pushbutton or CPU-generated control signals are compatible with the UC/DC input requirements.

Digital Potentiometers Part Context

The DS1809 series, known as Dallastat, offers nonvolatile digital potentiometry. The U variant specifically refers to the 8-lead µSOP package. Other variants include PDIP and SO packages, with resistance options of 10kΩ, 50kΩ, and 100kΩ.

Digital Potentiometers Replacement Considerations

Direct substitutes within the same family include DS1809Z-010+ (SO package) or DS1809-010+ (PDIP package), provided the package footprint is adaptable. Cross-family replacements require verification of interface compatibility and voltage ranges.