Maxim Integrated DS1855E-050

Description
The DS1855 is a dual nonvolatile (NV) digital potentiometer and secure memory device. It consists of:
Two linear taper potentiometers (100-position and 256-position)
256 bytes of EEPROM memory
2-wire interface
The DS1855 provides a method for setting bias voltages and currents in control applications using minimal circuitry. The EEPROM memory allows users to store configuration or calibration data for a specific system or device, as well as control potentiometer wiper settings.

Features
Two linear taper potentiometers (DS1855-010: 10kΩ, 100-position and 10kΩ, 256-position; DS1855-020: 10kΩ, 100-position and 20kΩ, 256-position; DS1855-050: 10kΩ, 100-position and 50kΩ, 256-position; DS1855-100: 10kΩ, 100-position and 100kΩ, 256-position)
256 bytes of EEPROM memory
Access to data and potentiometer control via a 2-wire interface
External write-protect pin to protect data and potentiometer settings
Data and potentiometer settings can also be write-protected through software control
Nonvolatile wiper storage
Operates from 3V or 5V supplies
14-pin TSSOP, 16-ball CSBGA, and 14-pin flip-chip packages
Industrial operating temperature: -40°C to 85°C

Applications
Setting bias voltages and currents in control applications
Storing configuration or calibration data for a specific system or device
Controlling potentiometer wiper settings