GENERAL DESCRIPTION

The AD5241/AD5242 provide a single-/dual-channel, 256-position, digitally controlled variable resistor (VR) device. 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. For the AD5242, the fixed A-to-B terminal resistance of 10 kΩ, 100 kΩ, or 1 MΩ has a 1 channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30 ppm/°C.

FEATURES

256 positions

10 kΩ, 100 kΩ, 1 MΩ

Low temperature coefficient: 30 ppm/°C

Internal power on midscale preset

Single-supply 2.7 V to 5.5 V or dual-supply ±2.7 V for ac or

bipolar operation

I2C-compatible interface with readback capability

Extra programmable logic outputs

Self-contained shutdown feature

Extended temperature range: ?40°C to +105°C

APPLICATIONS

Multimedia, video, and audio

Communications

Mechanical potentiometer replacement

Instrumentation: gain, offset adjustment

Programmable voltage-to-current conversion

Line impedance matching

AD5241BR10屬于集成電路（IC） > 數(shù)字電位計。亞德諾半導體技術有限公司制造生產(chǎn)的AD5241BR10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。