MAX1270-MAX1271中文資料美信數(shù)據(jù)手冊PDF規(guī)格書

General Description

The MAX1270/MAX1271 are multirange, 12-bit data acquisition systems (DAS) that require only a single +5V supply for operation, yet accept signals at their analog inputs that can span above the power-supply rail and below ground. These systems provide eight analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0 to +10V, 0 to +5V for the MAX1270; ±VREF, ±VREF/2, 0 to VREF, 0 to VREF/2 for the MAX1271. This range switch ing increases the effective dynamic range to 14 bits and provides the flexibility to interface 4–20mA, ±12V, and ±15V powered sensors directly to a single +5V system.

Features

? 12-Bit Resolution, 0.5 LSB Linearity

? +5V Single-Supply Operation

? SPI/QSPI and MICROWIRE-Compatible 3-Wire Interface

? Four Software-Selectable Input Ranges

?? MAX1270: 0 to +10V, 0 to +5V, ±10V, ±5V

?? MAX1271: 0 to VREF, 0 to VREF/2, ±VREF, ±VREF/2

? Eight Analog Input Channels

? 110ksps Sampling Rate

? ±16.5V Overvoltage-Tolerant Input Multiplexer

? Internal 4.096V or External Reference

? Two Power-Down Modes

? Internal or External Clock

? 24-Pin Narrow PDIP or 28-Pin SSOP Packages

Applications

? Industrial Control Systems

? Data-Acquisition Systems

? Battery-Powered

? Instruments

? Automatic Testing

? Robotics

? Medical Instruments

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