GENERAL DESCRIPTION

The AD5263 is the industry’s first quad-channel, 256-position, digital potentiometer1 with a selectable digital interface. This device performs the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.

Each channel of the AD5263 offers a completely programmable value of resistance between the A terminal and the wiper or between the B terminal and the wiper. The fixed A-to-B terminal resistance of 20 k?, 50 k?, or 200 k? has a nominal temperature coefficient of ±30 ppm/°C and a ±1 channel-to-channel matching tolerance. Another key feature of this part is the ability to operate from +4.5 V to +15 V, or at ±5 V.

FEATURES

256-position, 4-channel

End-to-end resistance 20 k?, 50 k?, 200 k?

Pin-selectable SPI?- or I2C?-compatible interface

Power-on preset to midscale

Two package address decode pins AD0 and AD1

Rheostat mode temperature coefficient 30 ppm/°C

Voltage divider temperature coefficient 5 ppm/°C

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

10 V to 15 V single supply; ±5 V dual supply

APPLICATIONS

Mechanical potentiometer replacement

Optical network adjustment

Instrumentation: gain, offset adjustment

Stereo channel audio level control

Automotive electronics adjustment

Programmable power supply

Programmable filters, delays, time constants

Line impedance matching

Low resolution DAC/trimmer replacement

Base station power amp biasing

Sensor calibration

AD5263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AD5263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。