MAX5477EUD

双路，256抽头，非易失， I²C接口，数字电位器 Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers

General Description

The MAX5477/MAX5478/MAX5479 nonvolatile, dual, linear-taper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 2-wire digital interface. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points.

Features

♦Power-On Recall of Wiper Position from Nonvolatile Memory

♦EEPROM Write Protection

♦Tiny 3mm x 3mm x 0.8mm Thin QFN Package

♦70ppm/°C End-to-End Resistance Temperature Coefficient

♦10ppm/°C Ratiometric Temperature Coefficient

♦Fast 400kbps I2C-Compatible Serial Interface

♦1µA max Static Supply Current

♦Single-Supply Operation: +2.7V to +5.25V

♦256 Tap Positions per Potentiometer

♦±0.5 LSB DNL in Voltage-Divider Mode

♦±1 LSB INL in Voltage-Divider Mode

Applications

Mechanical Potentiometer Replacement

Low-Drift Programmable-Gain Amplifiers

Volume Control

Liquid-Crystal Display LCD Contrast Control