CAT521屬于集成電路（IC）的數(shù)字電位計。由安森美半導體公司制造生產(chǎn)的CAT521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。

DESCRIPTION

The CAT521 is a 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

■ 8-bit DPP configured as a programmable voltage source in DAC-like applications

■ Buffered wiper output

■ Non-volatile NVRAM memory wiper storage

■ Output voltage range includes both supply rails

■ 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