Addressable Digital Potentiometer

The DS1805 addressable digital potentiometer contains a single 256-position digitally controlled potentiometer. Device control is achieved through a 2-wire serial interface. Device addressing is provided through three address inputs that allow up to eight devices on a single 2-wire bus. The exact wiper position of the potentiometer can be written or read. The DS1805 is available in 16-pin SO and 14-pin TSSOP packages. The device is available in three standard resistance values: 10kΩ, 50kΩ, and 100kΩ. The DS1805 is specified over the industrial temperature range. The DS1805 provides a low-cost alternative for designs based on the DS1803, but require only a single potentiometer.

Applications

* CCFL Inverters * Instrumentation and Industrial Controls * Multimedia Products * PDAs and Cell Phones * Portable Electronics

* 3V or 5V Operation

* Low Power Consumption

* One Digitally Controlled, 256-Position Potentiometer

* Compatible with DS1803-Based Designs

* 14-Pin TSSOP (173mil) and 16-Pin SO (150mil) Available for Surface-Mount Applications

* Three Address Inputs

* Serial 2-Wire Bus

* Operating Temperature Range

* Industrial: -40°C to +85°C

* Standard Resistance Values

* DS1805-010: 10kΩ

* DS1805-050: 50kΩ

* DS1805-100: 100kΩ