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

AD5282属于集成电路（IC） > 数字电位计。亚德诺半导体技术有限公司制造生产的AD5282数字电位计数字电位器是一系列集成电路器件，可提供类似于传统机械电位器或变阻器的可调节电阻，但通过电子信号而非机械输入来进行控制。虽然这些器件的电阻可耗散的电能相对有限，但其电子控制能力有助于小型化、自动化和远程控制信号级模拟电路，而这些电路本来可能会使用机械电位器。