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双路、数字电位器芯片

产品详情

The DS1868 has two 256-position potentiometers, with wiper positions each set as 8-bit values. The potentiometers can be used independently or stacked for increased total resistance and number of taps. Communication takes place through a 3-wire serial port interface that drives an internal control logic unit. Multiple DS1868s can be linked or daisy-chained for control by a single processor.

The DS1868 +5-volt Dual Digital Potentiometer was designed for applications requiring extremely low current consumption and extremely low cost. Maximum standby current is 1µA. The DS1868 is based on DS1267 technology but operates from a single +5-volt or from dual ±3-volt supplies.

Digital potentiometers improve upon mechanical devices with processor control and programmability, greater reliability and accuracy, and packaging options that facilitate automatic assembly. They are used for signal control in modems and phones, battery charging and control circuitry, tuning and calibration, offset trimming of operational amplifiers, gain control, and power supply regulation.

主要特征

  • Two 256-position digital potentiometers
  • Wipers digitally set and read through serial port
  • EEPROM maintains settings in the absence of power
  • Ultra low-power consumption: max standby current of 1µA
  • 3-wire serial control interface
  • Operating ranges:
    • +5V or ±3V
    • -40°C to +85°C

应用/用途

简化框图

DS1868:原理框图 DS1868:原理框图 Zoom icon

技术文档

设计与质量

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参量

主要特征

  • Two 256-position digital potentiometers
  • Wipers digitally set and read through serial port
  • EEPROM maintains settings in the absence of power
  • Ultra low-power consumption: max standby current of 1µA
  • 3-wire serial control interface
  • Operating ranges:
    • +5V or ±3V
    • -40°C to +85°C

应用/用途

描述

The DS1868 has two 256-position potentiometers, with wiper positions each set as 8-bit values. The potentiometers can be used independently or stacked for increased total resistance and number of taps. Communication takes place through a 3-wire serial port interface that drives an internal control logic unit. Multiple DS1868s can be linked or daisy-chained for control by a single processor.

The DS1868 +5-volt Dual Digital Potentiometer was designed for applications requiring extremely low current consumption and extremely low cost. Maximum standby current is 1µA. The DS1868 is based on DS1267 technology but operates from a single +5-volt or from dual ±3-volt supplies.

Digital potentiometers improve upon mechanical devices with processor control and programmability, greater reliability and accuracy, and packaging options that facilitate automatic assembly. They are used for signal control in modems and phones, battery charging and control circuitry, tuning and calibration, offset trimming of operational amplifiers, gain control, and power supply regulation.

简化框图

DS1868:原理框图 DS1868:原理框图 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心