DS1267中文资料±5V、双路、数字电位器芯片数据手册ADI规格书

描述 Description

The DS1267 has two 256-position potentiometers, with wiper positions each set by stored 8-bit values. The DS1267 communicates through a 3-wire serial port interface that drives an internal control logic unit. Multiple DS1267s can be linked or daisy-chained for control by a single processor.
Digital potentiometers improve upon mechanical devices with processor control and programmability, greater reliability and accuracy, and packaging options that facilitate automatic assembly. This digital potentiometer offers extremely low-power use and reliable, accurate performance throughout the industrial temperature range.
The DS1267 is ideal for controlling the incoming signal levels in modems and for level adjustment and control of RF and audio signals in cellular telephones. Digital potentiometers are also used for battery charging and control circuitry, tuning and calibration, offset trimming of operational amplifiers, gain control, and power supply regulation.

特性 Features

• Two 256-step (or 8-bit) digital potentiometers
• Stacking configures device as one 512-step (or 9-bit) digital potentiometer
• Wipers digitally set and read through serial port
• Ultra low-power consumption, quiet, pumpless design
• 3-wire serial control interface
• Operating ranges:
• Single +5V or ±5V supplies
• -40°C to +85°C

应用 Application

• 应用
• 光纤收发器模块
• 移动电话及PDA
• 便携式电子
• 电源校准
• 无线调谐器
• 替代8位或9位DAC的功能
• 替代机械电位器
• 射频收发器

简介

DS1267属于集成电路（IC）的数字电位计。由制造生产的DS1267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。