描述 Description

The MCP402X devices are non-volatile, 6-bit (64 wiper steps) digital potentiometers that are programmed/reprogrammed through a simple up/down serial interface. The MCP402X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count. The MCP4021 device offers a voltage divider (potentiometer), with all terminals available on pins. The MCP4022 is a true rheostat, with both nodes of the resistor available on pins. The MCP4023 device offers a voltage divider (potentiometer), with one terminal connected to ground. The MCP4024 device is a rheostat mode device, with one terminal of the resistor connected to ground. The devices offer WiperLock? Technology which allows the user unlimited reprogramming and locking of the wiper setting. This is useful for equipment that requires factory trimming or recalibration. The MCP402x family of devices are available with resistor values of 2.1kΩ, 5kΩ, 10kΩ and 50kΩ. These devices operate from a single 2.7-5.5V supply and draw less than 1 μA while operating in the static state.

特性 Features

NonVolatile Digital Potentiometer in SOT-23 packages
64 Taps: 63 Resistors with Taps to VSS and VDD
Simple Up/Down (U/D) Protocol
Automatic Recall of Potentiometer Wiper Settings
Resistance Values: 2.1kΩ, 5kΩ, 10kΩ, 50kΩ
Absolute (Rheostat): Ratiometric (Potentiometer): Low Wiper Resistance: 70Ω (typ.)
WiperLock? Technology to Secure the EEPROM
Low-Power Operation: 1μA Max Static Current
Wide Operating Voltage: 2.7V to 5.5V
Extended Temperature Range: -40°C to +125°C

簡介

MCP4021屬于集成電路（IC）的數(shù)字電位計。由制造生產(chǎn)的MCP4021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械輸入來進行控制。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、自動化和遠程控制信號級模擬電路，而這些電路本來可能會使用機械電位器。