MAX1270A|MAX1270B - 多量程、+5V、8通道、串行12位ADC

MAX1270A|MAX1270B是Maxim美信半导体公司的一款美信芯片产品，MAX1270A|MAX1270B是多量程、+5V、8通道、串行12位ADC，本站介绍了MAX1270A|MAX1270B的封装应用图解、特点和优点、功能等，并给出了与MAX1270A|MAX1270B相关的Maxim元器件型号供参考。

MAX1270A|MAX1270B - 多量程、+5V、8通道、串行12位ADC - 美信芯片 - 12位、8通道串行ADC，输入端具有±17V故障保护 - 美信半导体

产品概述

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 may 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 switching 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. In addition, these converters are fault protected to ±16.5V; a fault condition on any channel will not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, software-selectable internal/external clock, 110ksps throughput rate, and internal 4.096V or external reference operation.

The MAX1270/MAX1271 serial interface directly connects to SPI™/QSPI™ and MICROWIRE™ devices without external logic.

A hardware shutdown input (SHDN-bar) and two software-programmable power-down modes, standby (STBYPD) or full power-down (FULLPD), are provided for low-current shutdown between conversions. In standby mode, the reference buffer remains active, eliminating start-up delays.

The MAX1270/MAX1271 are available in 24-pin narrow DIP or space-saving 28-pin SSOP packages.

关键特性

以下关键特性由Maxim美信半导体提供：

12-Bit Resolution, 1/2LSB 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 DIP or 28-Pin SSOP Packages

热门应用

自动测试

电池供电仪表

数据采集系统

工业控制系统

医疗仪器

机器人技术

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