GENERAL DESCRIPTION

The AD5247 provides a compact, 2 mm × 2.1 mm, packaged solution for 128-position adjustment applications. This device performs the same electronic adjustment function as a mechanical potentiometer or a variable resistor. Available in four different end-to-end resistance values (5 k?, 10 k?, 50 k?, and 100 k?), these low temperature coefficient devices are ideal for high accuracy and stability variable resistance adjustments.

FEATURES

128 positions

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

Ultracompact, SC70-6 (2 mm × 2.1 mm) package

I2C-compatible interface

Full read/write of wiper register

Power-on preset to midscale

Single-supply 2.7 V to 5.5 V

Rheostat mode temperature coefficient: 45 ppm/°C

Low power, IDD = 0.9 μA at 3.3 V typical

Wide operating temperature range: ?40°C to +125°C

APPLICATIONS

Mechanical potentiometer replacement in new designs

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

RF amplifier-biasing

LCD brightness and contrast adjustment

Automotive electronics adjustment

Gain control and offset adjustment

AD5247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AD5247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(dòng)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。