Triple 128-Position Nonvolatile Digital Potentiometer

The DS3903 contains three nonvolatile (NV) low temperature coefficient digital potentiometers, which can be accessed through a 2-wire bus. The DS3903 operates in both 3V and 5V systems, and it features a write-protect pin that can lock the positions of the potentiometers. An address pin allows two DS3903s to be placed on the same 2-wire bus.

Applications

* A Small and Low-Cost Replacement for Mechanical Potentiometers * Fiber Optic Transceiver Modules * Mobile Phones and PDAs * Portable Electronics * Power Supply Calibration

* Three 128-Position Linear Potentiometers (Two 10kΩ, One 100kΩ)

* NV Wiper Storage

* Low End-to-End Temperature Coefficient

* Operates on an Industry-Standard 2-Wire Bus

* Write-Protect Pin

* Supply Range: 3V or 5V

* Operating Temperature Range: -40°C to +85°C

* Packaging: 20-Pin TSSOP