描述 Description

The MCP445X devices?are quad-channel, volatile, 8-bit (257 wiper steps) digital potentiometers?with an I2C compatible interface. The MCP445X family is available with end-to-end resistor values of 5KΩ, 10KΩ, 50kΩ and 100KΩ. These devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.

特性 Features

Quad Resistor Network
Potentiometer or Rheostat configuration options
8-bit – 256 Resistors (257 Taps)
5kΩ
10kΩ
50kΩ
100kΩ
Zero-scale to Full-scale Wiper Operation
Low Wiper Resistance – 75Ω typical
Absolute (Rheostat) – 50 ppm typical (0°-70°C)
Ratiometric (Potentiometer) – 15 ppm typical
100 kHz
400 kHz
3.4 MHz
Serial Protocol Allows High-Speed Read/Write to Wiper
Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register
Reset Input Pin
Brown-out Reset Protection – 1.5V typical
Serial Interface Inactive Current – 2.5 uA typical
High-Voltage Tolerant Digital Inputs Up to 12.5V
Supports Split Rail Applications
2.7V to 5.5V - Device Characteristics Specified
1.8V to 5.5V - Device Operation
Wide Bandwidth (-3 dB) Operation – 2 MHz typical for 5.0Ω Device
Extended Temperature Range (-40°C to +125°C)
Three Package Types: TSSOP-14
AEC-Q100 Grade 1 quarlified

簡介

MCP4452屬于集成電路（IC）的數(shù)字電位計。由制造生產(chǎn)的MCP4452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。