GENERAL DESCRIPTION

The AD8400/AD8402/AD8403 provide a single-, dual-, or quad-channel, 256-position, digitally controlled variable resistor (VR) device.1 These devices perform the same electronic adjustment function as a mechanical potentiometer or variable resistor. The AD8400 contains a single variable resistor in the compact SOIC-8 package.

FEATURES

256-position variable resistance device

Replaces 1, 2, or 4 potentiometers

1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

Power shutdown—less than 5 μA

3-wire,SPI-compatible serial data input

10 MHz update data loading rate

2.7 V to 5.5 V single-supply operation

Qualified for automotive applications

APPLICATIONS

Mechanical potentiometer replacement

Programmable filters, delays, time constants

Volume control, panning

Line impedance matching

Power supply adjustment

AD8400AR50属于集成电路（IC） > 数字电位计。亚德诺半导体技术有限公司制造生产的AD8400AR50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。