GENERAL DESCRIPTION

The AD5207 provides dual channel, 256-position, digitally controlled variable resistor (VR) devices that perform the same electronic adjustment function as a potentiometer or variable resistor. Each channel of the AD5207 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register.

FEATURES

256-Position, 2-Channel

Potentiometer Replacement

10 k
, 50 k
, 100 k

Power Shut-Down, Less than 5 A

2.7 V to 5.5 V Single Supply

2.7 V Dual Supply

3-Wire SPI-Compatible Serial Data Input

Midscale Preset During Power-On

APPLICATIONS

Mechanical Potentiometer Replacement

Stereo Channel Audio Level Control

Instrumentation: Gain, Offset Adjustment

Programmable Voltage-to-Current Conversion

Programmable Filters, Delays, Time Constants

Line Impedance Matching

Automotive Electronics Adjustment

AD5222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AD5222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。