CAT522屬于集成電路（IC）的數字電位計。由安森美半導體公司制造生產的CAT522數字電位計數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。

DESCRIPTION

The CAT522 is a dual, 8-bit digitally-programmable potentiometer (DPP?) configured for programmable voltage and DAC-like applications. Intended for final calibration of products such as camcorders, fax machines and cellular telephones on automated high volume production lines, it is also well suited for self-calibrating systems and for applications where equipment which requires periodic adjustment is either difficult to access or in a hazardous environment.

FEATURES

■ Two 8-bit DPPs configured as programmable voltage sources in DAC-like applications

■ Independent reference inputs

■ Non-volatile NVRAM memory wiper storage

■ Output voltage range includes both supply rails

■ 2 independently addressable buffered output wipers

■ 1 LSB accuracy, high resolution

■ Serial Microwire-like interface

■ Single supply operation: 2.7V - 5.5V

■ Setting read-back without effecting outputs

APPLICATIONS

■ Automated product calibration.

■ Remote control adjustment of equipment

■ Offset, gain and zero adjustments in self-calibrating and adaptive control systems.

■ Tamper-proof calibrations.

■ DAC (with memory) substitute.