GENERAL DESCRIPTION

The AD5243 and AD5248 provide a compact 3 mm × 4.9 mm packaged solution for dual, 256-position adjustment applications. The AD5243 performs the same electronic adjustment function as a 3-terminal mechanical potentiometer, and the AD5248 performs the same adjustment function as a 2-terminal variable resistor.

FEATURES

2-channel, 256-position potentiometers

End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ

Compact 10-lead MSOP (3 mm × 4.9 mm) package

Fast settling time: tS = 5 µs typical on power-up

Full read/write of wiper register

Power-on preset to midscale

Extra package address decode pins: AD0 and AD1 (AD5248 only)

Computer software replaces microcontroller in factory programming applications

Single supply: 2.7 V to 5.5 V

Low temperature coefficient: 35 ppm/°C

Low power: IDD = 6 µA maximum

Wide operating temperature: −40°C to +125°C

Evaluation board available

APPLICATIONS

Systems calibrations

Electronics level settings

Mechanical trimmers replacement in new designs

Permanent factory PCB setting

Transducer adjustment of pressure, temperature, position, chemical, and optical sensors

RF amplifier biasing

Automotive electronics adjustment

Gain control and offset adjustment

AD5248BRM100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AD5248BRM100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。