DS1267 双路、±5V、数字电位器芯片

DS1267 双路、±5V、数字电位器芯片

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.

DS1267关键特性

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

DS1267应用/使用

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

DS1267引脚图