AD5245屬于集成電路（IC）的數(shù)字電位計。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD5245數(shù)字電位計數(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械輸入來進行控制。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、自動化和遠程控制信號級模擬電路，而這些電路本來可能會使用機械電位器。

GENERAL DESCRIPTION

The AD5245 provides a compact 2.9 mm × 3 mm packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.

FEATURES

256-position

End-to-end resistance 5 k?, 10 k?, 50 k?, 100 k?

Compact SOT-23-8 (2.9 mm × 3 mm) package

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

Full read/write of wiper register

Power-on preset to midscale

Extra package address decode pin AD0

Computer software replaces μC in factory programming applications

Single supply: 2.7 V to 5.5 V

Low temperature coefficient 45 ppm/°C

Low power: IDD = 8 μA

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

Evaluation board available

APPLICATIONS

Mechanical potentiometer replacement in new designs

LCD panel VCOM adjustment

LCD panel brightness and contrast control

Transducer adjustment of pressure, temperature, position,

chemical, and optical sensors

RF amplifier biasing

Automotive electronics adjustment

Gain control and offset adjustment