描述 Description

The CAT5419 is two digital POTs integrated with control logic and 16 bytes of NVRAM memory. A separate 6-bit control register (WCR) independently controls the wiper tap position for each digital POT. Associated with each wiper control register are four 6-bit nonvolatile memory data registers (DR) used for storing up to four wiper settings. Writing to the wiper control register or any of the non-volatile data registers is via a 2-wire serial bus (I2C-like). On power-up, the contents of the first data register (DR0) for each of the two potentiometers is automatically loaded into its respective wiper control registers (WCR).The Write Protection (WP) pin protects against inadvertent programming of the data register.The CAT5419 can be used as a potentiometer or as a two terminal, variable resistor. It is intended for circuit level or system level adjustments in a wide variety of applications.

特性 Features

? Two linear-taper digital potentiometers
? 64 resistor taps per potentiometer
? End-to-end resistance 2.5 kΩ, 10 kΩ, 50 kΩ or 100 kΩ
? Potentiometer control and memory access via 2-wire interface (I2C like)
? Low wiper resistance, typically 80 Ω
? Four non-volatile wiper settings for each potentiometer
? Recall of wiper settings at power up
? 2.5 to 6.0 volt operation
? Standby current less than 1 μA
? 1,000,000 nonvolatile WRITE cycles
? 100 year nonvolatile memory data retention
? Write protection for data register

應(yīng)用 Application

? Audio Equipment
? Industrial Controls
? Automobiles
? Industrial Equipment

簡介

CAT5419屬于集成電路（IC）的數(shù)字電位計。由制造生產(chǎn)的CAT5419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(jī)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(jī)械輸入來進(jìn)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(yuǎn)程控制信號級模擬電路，而這些電路本來可能會使用機(jī)械電位器。