Dallas Logic DS1867S-50

The DS1867 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 is accomplished over a 3 - wire serial port which allows reads and writes of the wiper position. Both potentiometers can be stacked for increased 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 and commercial and industrial temperature versions.

• 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 - 10～10KΩ, DS1867 - 50～50KΩ, DS1867 - 100～100KΩ
• Temperature: Commercial: 0°C to 70°C; Industrial: - 40°C to + 85°C