CAT5409中文资料数字电位计 (POT)，四路 64 抽头，带 I2C 接口数据手册ONSEMI规格书

描述 Description

The CAT5409 is four 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 non-volatile 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 four potentiometers is automatically loaded into its respective wiper control register (WCR).The Write Protection (WP) pin protects against inadvertent programming of the data register.The CAT5409 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

• Four linear-taper digital potentiometers
• 64 resistor taps per potentiometer
• End-to-end resistance 2.5 kΩ, 10 kΩ, 50 kΩ or 100 kΩ
• I2C Interface
• Low wiper resistance, typically 80 Ω
• Four non-volatile wiper settings for each potentiometer
• Recall of saved 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

应用 Application

• Audio Equipment
• Industrial Controls
• Automobiles
• Industrial Equipment

简介

CAT5409属于集成电路（IC）的数字电位计。由制造生产的CAT5409数字电位计数字电位器是一系列集成电路器件，可提供类似于传统机械电位器或变阻器的可调节电阻，但通过电子信号而非机械输入来进行控制。虽然这些器件的电阻可耗散的电能相对有限，但其电子控制能力有助于小型化、自动化和远程控制信号级模拟电路，而这些电路本来可能会使用机械电位器。