MCP4642中文资料7-Bit Dual Digital POT with NVM and I2C™数据手册Microchip规格书

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

简介

MCP4642属于集成电路（IC）的数字电位计。由制造生产的MCP4642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。