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Maxim产品 - MAX127A|MAX127B介绍
MAX127A|MAX127B - 多量程、+5V、12位DAS,带有2线串行接口

MAX127A|MAX127B是Maxim美信半导体公司的一款美信芯片产品,MAX127A|MAX127B是多量程、+5V、12位DAS,带有2线串行接口,本站介绍了MAX127A|MAX127B的封装应用图解、特点和优点、功能等,并给出了与MAX127A|MAX127B相关的Maxim元器件型号供参考。

MAX127A|MAX127B - 多量程、+5V、12位DAS,带有2线串行接口 - 美信芯片 - 首款2线、12位、8通道、串行ADC,具有±17V故障保护输入 - 美信半导体

产品概述

The MAX127/MAX128 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 MAX127; and ±VREF, ±VREF/2, 0 to +VREF, 0 to +VREF/2 for the MAX128. 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, an 8ksps throughput rate, and the option of an internal 4.096V or external reference.

The MAX127/MAX128 feature a 2-wire, I2C-compatible serial interface that allows communication among multiple devices using SDA and SCL lines.

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

The MAX127/MAX128 are available in 24-pin narrow PDIP 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, 1/2 LSB Linearity
  • +5V Single-Supply Operation
  • I2C-Compatible, 2-Wire Serial Interface
  • Four Software-Selectable Input Ranges
  • MAX127: 0 to +10V, 0 to +5V, ±10V, ±5V
  • MAX128: 0 to +VREF, 0 to +VREF/2, ±VREF, ±VREF/2
  • 8 Analog Input Channels
  • 8ksps Sampling Rate
  • ±16.5V Overvoltage-Tolerant Input Multiplexer
  • Internal 4.096V or External Reference
  • Two Power-Down Modes
  • 24-Pin Narrow PDIP or 28-Pin SSOP Packages
  • 热门应用
  • 电池供电应用
  • 数据采集
  • 工业控制系统
  • 机器人技术
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