AD5241

The AD5241/AD5242 provide a single-/dual-channel, 256-position, digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. Each VR offers a completely programmable value of resistance between the A Terminal and the wiper, or the B Terminal and the wiper.For AD5242, the fixed A-to-B terminal resistance of 10k,100 k, or 1 M has a 1% channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30ppm/°C.
Wiper position programming defaults to midscale at system power ON. Once powered, the VR wiper position is programmed  by an I² C compatible 2-wire serial data interface. Both parts have available two extra programmable logic outputs that enable users to drive digital loads, logic gates, LED drivers, and analog switches in their system.
The AD5241/AD5242 are available in surface-mount (SOIC-14/-16) packages and, for ultracompact solutions, TSSOP-14/-16 packages. All parts are guaranteed to operate over the extended temperature range of 40°C to +105°C. For 3-wire,SPI compatible interface applications, please refer to AD5200,AD5201, AD5203, AD5204, AD5206, AD5231*, AD5232*,AD5235*, AD7376, AD8400, AD8402, and AD8403 products.