MAX5403-MAX5405中文資料美信數(shù)據(jù)手冊PDF規(guī)格書

General Description

The MAX5403/MAX5404/MAX5405 is a family of dual linear taper digital potentiometers. Each device has one 3-terminal potentiometer and one 2-terminal variable resistor (Figure 1). The MAX5403/MAX5404/MAX5405 operate from +2.7V to +5.5V single-supply voltages and use an ultra-low supply current of 0.1μA. These devices also provide glitchless switching between resistors taps as well as a convenient power-on reset (POR) that sets the wiper to the midscale position at power-up. The potentiometer consists of a fixed resistor with a wiper contact that is digitally controlled through a 3-wire serial interface and has 256-tap points. It performs the same function as a discrete potentiometer or variable resistor.

Features

? 10-Pin μMAX Small Footprint Package

? 256-Tap Positions

? Ultra Low 0.1μA Supply Current

? +2.7V to +5.5V Single-Supply Operation

? Low End-To-End Temperature Coefficient:

?? 35ppm/°C

? Low Ratiometric Temperature Coefficient:

?? 5ppm/°C

? Power-On Reset: Wiper Goes to Midscale

?? (Position 128)

? Glitchless Switching Between Resistor Taps

? 3-Wire SPI? -Interface Compatible

? 10k?/50k?/100k? Resistor Values

Applications

?? Mechanical Potentiometer Replacement

?? Low-Drift Programmable Gain Amplifier (PGA)

?? Volume Control

?? LCD Screen Adjustment

?? Adjustable Voltage Reference

?? Programmable Filters, Delays, Time Constant

?? Impedance Matching