DESCRIPTION

The DS1867 Dual Digital Potentiometer with EEPROM is the nonvolatile version of the popular DS1267 Dual Digital Potentiometer. The DS1867 consists of two digitally controlled potentiometers having 256- position wiper settings. Wiper position is maintained in the absence of power through the use of EEPROM memory cell arrays. Communication and control of the device are accomplished over a 3-wire serial port which allows reads and writes of the wiper position. Both potentiometers can be stacked forincreased total resistance with the same resolution. For multiple-device, single-processor environments, the DS1867 can be cascaded for control over a single 3-wire bus. The DS1867 is offered in three standard resistance values.

FEATURES

● Nonvolatile version of the popular DS1267

● Low power consumption, quiet, pumpless design

● Operates from single 5V or ±5V supplies

● Two digitally controlled, 256-position potentiometers

● Wiper position is maintained in the absence of power

● Serial port provides means for setting and reading both potentiometers

● Resistors can be connected in series to provide increased total resistance

● 16-pin SOIC and 20-pin TSSOP for surface mount applications

● Standard resistance values:

- DS1867-10 ~ 10 kW

- DS1867-50 ~ 50 kW

- DS1867-100 ~ 100 kW

● Operating Temperature Range:

- Industrial: -40°C to +85°C