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 k?, 10 k?, 50 k?, and 100 k?

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

AD5243BRM50屬于集成電路（IC） > 數(shù)字電位計(jì)。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD5243BRM50數(shù)字電位計(jì)數(shù)字電位器是一系列集成電路器件，可提供類似于傳統(tǒng)機(jī)械電位器或變阻器的可調(diào)節(jié)電阻，但通過電子信號而非機(jī)械輸入來進(jìn)行控制。雖然這些器件的電阻可耗散的電能相對有限，但其電子控制能力有助于小型化、自動化和遠(yuǎn)程控制信號級模擬電路，而這些電路本來可能會使用機(jī)械電位器。