MCP4442中文资料7-Bit Quad Digital POT with NVM and I2C™数据手册Microchip规格书

描述 Description

The MCP444X devices are non-volatile, 7-bit (129 wiper steps) digital potentiometers with EEPROM and an I2C compatible interface. The MCP444X 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 MCP444X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.

特性 Features

Quad Resistor Network
Rheostat configuration options
7-bit – 128 Resistors (129 Taps)
5kO
10kO
50kO
100kO
Zero-scale to Full-scale Wiper Operation
Low Wiper Resistance – 75O typical
Absolute (Rheostat) – 50 ppm typical (0°-70°C)
Ratiometric (Potentiometer) – 15 ppm typical
Automatic Recall of Saved Wiper Setting
WiperLock™ Technology
5 General Purpose Memory Locations
100 kHz
400 kHz
3.4 MHz
High-Speed Read/Write to wiper
Read/Write to EEPROM
Write Protect to be enabled/disable
WiperLock to be enabled/disabled
Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register
Reset Input Pin
Hardware Write Protect (WP) Control pin
Software Write Protect (WP) Configuration bit
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 5.0O Device
Extended Temperature Range (-40°C to +125°C)
Package Types: TSSOP-20
AEC-Q100 Grade 1 quarlified
Rheostat Configuration Options

简介

MCP4442属于集成电路（IC）的数字电位计。由制造生产的MCP4442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。