GENERAL DESCRIPTION
●The AD5280/AD5282 provides a single-/dual-channel, 256-position digitally controlled variable resistor (VR) device.1 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. The fixed A-to-B terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ has a 1% channel-to-channel matching tolerance. Nominal temperature coefficient of both parts is 30 ppm/°C. Another key feature of these parts is that they can operate up to +15 V or ±5 V.
●FEATURES
● 256 Position
● AD5280: 1-Channel
● AD5282: 2-Channel (Independently Programmable)
● Potentiometer Replacement
● 20 kΩ, 50 kΩ, 200 kΩ
● Low Temperature Coefficient 30 ppm/°C
● Internal Power-On Midscale Preset
● 5 V to 15 V Single-Supply; ±5.5 V Dual-Supply Operation
● I2C Compatible Interface
●APPLICATIONS
● Multimedia, Video, and Audio
● Communications
● Mechanical Potentiometer Replacement
● Instrumentation: Gain, Offset Adjustment
● Programmable Voltage Source
● Programmable Current Source
● Line Impedance Matching
