描述 Description

The MCP464X devices are dual channel, non-volatile, 7-bit (129 wiper steps) digital potentiometers with EEPROM and an I2C compatible interface. The MCP464X family is available with end-to-end resistor values of 5KΩ, 10KΩ, 50kΩ and 100KΩ. These devices offer WiperLock? Technology which allows the user unlimited reprogramming and locking of the wiper setting. It is useful for equipment that requires factory trimming or recalibration. The MCP464X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.

特性 Features

Dual Resistor Network
Potentiometer or Rheostat configuration options
7-bit: 128 Resistors (129 Steps)
5kO
10kO
50kO
100kO
Zero-Scale to Full-Scale Wiper operation
Low Wiper Resistance: 75O (typ.)
Absolute (Rheostat): 50 ppm typical(0°C to 70°C)
Ratiometric (Potentiometer): 15 ppm typical
100 kHz
400 kHz
3.4 MHz
Brown-out reset protection (1.5V typical)
Serial Interface Inactive current (2.5 uA typ.)
High-Voltage Tolerant Digital Inputs: Up to 12.5V
2.7V to 5.5V - Device Characteristics Specified
1.8V to 5.5V - Device Operation
2 MHz (typ.) for 5.0 kO device
Extended temperature range (-40°C to +125°C)
AEC-Q100 Grade 1 qualified

簡(jiǎn)介

MCP4642屬于集成電路（IC）的數(shù)字電位計(jì)。由制造生產(chǎn)的MCP4642數(shù)字電位計(jì)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(guò)電子信號(hào)而非機(jī)械輸入來(lái)進(jìn)行控制。雖然這些器件的電阻可耗散的電能相對(duì)有限，但其電子控制能力有助于小型化、自動(dòng)化和遠(yuǎn)程控制信號(hào)級(jí)模擬電路，而這些電路本來(lái)可能會(huì)使用機(jī)械電位器。