DS1666中文资料±5V伪对数音频数字电位器数据手册ADI规格书

描述 Description

The DS1666 Audio Taper Potentiometer is a solid-state, 128-position digital potentiometer with a pseudo-logarithmic resistor array designed to behave with analog characteristics, specifically suited to audio applications. Wiper position is controlled via a simple increment/decrement control interface.
On power-up, the wiper for the DS1666 is set to 10% of active digital taps/3% of total end-to-end resistance of the potentiometer. Taps on the lower portion of the potentiometer increment 0.25% of the total resistance within ±0.5% of the expected value. Taps on the higher portion increment 1.5% of the total resistance within ±2.0% of the expected value. The DS1666 can operate using a bipolar ±5-volt supply or single +5-volt supply.
As an electronically controlled IC, the DS1666 gives designers and users the digital advantages of more control, flexibility and accuracy, while mimicking audio taper capability. Standard IC packaging is also consistent with automated assembly processes.

特性 Features

• Digitally controlled, 128-position potentiometer
• Pseudo-logarithmic resistor characteristic
• Single or dual power supply operation (+5-volt or ±5-volt)
• Increment/decrement control interface
• Wiper position defaults to 3% of total potentiometer resistance on power up
• 10kΩ, 50kΩ, and 100kΩ versions
• Wide analog voltage range of ±5 volts
• Operates from 5V power supply with TTL input
• Operating temperature range: -40°C to +85°C

应用 Application

• 应用
• 音量控制
• 移动电话及PDA
• 便携式电子
• 替代7位对数DAC功能
• 替代机械电位器

简介

DS1666属于集成电路（IC）的数字电位计。由制造生产的DS1666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。