DESCRIPTION

The DS1845 Dual NV Potentiometer and Memory consists of one=100-position linear taper potentiometer, one=256-position linear taper potentiometer, 256 bytes of EEPROM memory, and a 2-wire interface. The device provides an ideal method for setting bias voltages and currents in control applications using a minimum of circuitry. The EEPROM memory allows a user to store configuration or calibration data for a specific system or device as well as provide control of the potentiometer wiper settings. Any type of user information may reside in the first 248 bytes of this memory.

FEATURES

■ Two linear taper potentiometers

− DS1845-010 one 10k, 100 position & one 10k, 256 position

− DS1845-050 one 10k, 100 position & one 50k, 256 postition

− DS1845-100 one 10k, 100 position & one 100k, 256 position

■ 256 bytes of EEPROM memory

■ Access to data and potentiometer control via a 2-wire interface

■ External Write Enable pin to protect data and potentiometer settings

■ Nonvolatile wiper storage in 2 bytes of address space

■ Operates from 3V or 5V supplies

■ Packaging: Flip Chip Package, 16-ball STPBGA, 14-pin TSSOP

■ Industrial operating temperature: -40ºC to +85ºC

■ Programming temperature: 0ºC to +70ºC