描述 Description

The MCP4017/8/9 devices are volatile, 7-bit (128 wiper steps) digital potentiometers?with an I2C?Compatible interface. This family offers 5kΩ, 10kΩ, 50kΩ and 100kΩ end-to-end resistance values and is?available in miniature 5?or 6 lead SC-70 packaging with potentiometer or?rheostat pinouts.

特性 Features

Potentiometer or Rheostat configuration options
127 Resistors (128 Steps)
Zero Scale to Full Scale Wiper operation
RAB Resistances: 5kΩ, 10kΩ, 50kΩ and 100kΩ
Low Wiper Resistance: 100Ω (typical)
Absolute (Rheostat): 50 ppm typical (0°C to 70°C)
Ratiometric (Potentiometer): 15 ppm typical
Simple I2C?Compatible Protocol with read & write commands
Brown-out reset protection (1.5V typical)
Power-on Default Wiper Setting (Mid-scale)
Low-Power Operation: 2.5 μA Static Current (typ
2.7V to 5.5V - Device Characteristics Specified
1.8V to 5.5V - Device Operation

簡介

MCP40D17屬于集成電路（IC）的數(shù)字電位計。由制造生產(chǎn)的MCP40D17數(shù)字電位計數(shù)字電位器是一系列集成電路器件，可提供類似于傳統(tǒng)機(jī)械電位器或變阻器的可調(diào)節(jié)電阻，但通過電子信號而非機(jī)械輸入來進(jìn)行控制。雖然這些器件的電阻可耗散的電能相對有限，但其電子控制能力有助于小型化、自動化和遠(yuǎn)程控制信號級模擬電路，而這些電路本來可能會使用機(jī)械電位器。