DS1855B-010

The DS1855 dual nonvolatile (NV) digital potentiometer and secure memory consists of one100-position linear taper potentiometer, one256-position linear taper potentiometer, 256 bytes of EEPROM memory, and a 2-wire interface.
The DS1855, which features a new software write protect, is an upgrade of the DS1845.
The DS1855 provides an ideal method for setting bias voltages and currents in control applications using a minimum of circuitry.
FEATURES
• Two linear taper potentiometers - DS1855-010 (one 10k, 100 position and one 10k, 256 position) - DS1855-020 (one 10k, 100 position and one 20k, 256 position) - DS1855-050 (one 10k, 100 position and one 50k, 256 position) - DS1855-100 (one 10k, 100 position and one 100k, 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 also can be write-protected through software control
• Nonvolatile wiper storage
• Operates from 3V or 5V supplies
• Packaging: 14-pin TSSOP, 16-ball STPBGA, flip-chip package
• Industrial operating temperature: -40ºC to +85ºC
• Programming temperature: 0ºC to +85ºC