CAT5221中文资料数字电位计 (POT)，64 抽头，带 I2C 接口数据手册ONSEMI规格书

描述 Description

The CAT5221 is two digital POTs integrated with control logic and 16 bytes of EEPROM memory. Each digital POT consists of a series of 63 resistive elements connected between two externally accessible end points. The tap points between each resistive element are connected to the wiper outputs with CMOS switches. A separate 6-bit control register (WCR) independently controls the wiper tap switches 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 I²C serial bus. 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 CAT5221 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 I²C interface
• Low wiper resistance, typically 80 Ω
• Nonvolatile memory storage for up to four wiper settings for each potentiometer
• Automatic recall of saved wiper settings at power up
• 2.5 to 6.0 volt operation
• Standby current less than 1.0 µA
• 1,000,000 nonvolatile WRITE cycles
• 100 year nonvolatile memory data retention
• Industrial temperature ranges

应用 Application

• Audio Equipment
• Industrial controls
• Industrial Equipment
• Automobiles

简介

CAT5221属于集成电路（IC）的数字电位计。由制造生产的CAT5221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。