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Maxim产品 - MAX1112介绍

MAX1112 - +5V、低功耗、多通道、串行8位ADC

MAX1112是Maxim美信半导体公司的一款数据转换器和采样-保持电路产品，MAX1112是+5V、低功耗、多通道、串行8位ADC，本站介绍了MAX1112的封装应用图解、特点和优点、功能等，并给出了与MAX1112相关的Maxim元器件型号供参考。

MAX1112 - +5V、低功耗、多通道、串行8位ADC - 数据转换器和采样-保持电路 - 功耗最低的8位、4/8通道ADC，内置基准 - 美信半导体

产品概述

The MAX1112/MAX1113 low-power, 8-bit, 8-channel analog-to-digital converters (ADCs) feature an internaltrack/hold, voltage reference, clock, and serial interface.They operate from a single 4.5V to 5.5V supplyand consume only 135μA while sampling at rates up to50ksps. The MAX1112's 8 analog inputs and theMAX1113's 4 analog inputs are software-configurable,allowing unipolar/bipolar and single-ended/differentialoperation.

Successive-approximation conversions are performedusing either the internal clock or an external serial-interfaceclock. The full-scale analog input range is determinedby the 4.096V internal reference, or by anexternally applied reference ranging from 1V to VDD.The 4-wire serial interface is compatible with the SPI™,QSPI™, and MICROWIRE™ serial-interface standards.A serial-strobe output provides the end-of-conversionsignal for interrupt-driven processors.

The MAX1112/MAX1113 have a software-programmable,2µA automatic power-down mode to minimizepower consumption. Using power-down, the supplycurrent is reduced to 13µA at 1ksps, and only 82µA at10ksps. Power-down can also be controlled using theactive-low SHDN input pin. Accessing the serial interface automaticallypowers up the device.

The MAX1112 is available in a 20-pin SSOP package.The MAX1113 is available in a small 16-pin QSOPpackage.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • 4.5V to 5.5V Single Supply
  • Low Power:
  • 135µA at 50ksps
  • 13µA at 1ksps
  • 8-Channel Single-Ended or 4-Channel Differential Inputs (MAX1112)
  • 4-Channel Single-Ended or 2-Channel Differential Inputs (MAX1113)
  • Internal Track/Hold; 50kHz Sampling Rate
  • Internal 4.096V Reference
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Software-Configurable Unipolar or Bipolar Inputs
  • Total Unadjusted Error:
  • ±1 LSB (max)
  • ±0.3 LSB (typ)
    • 热门应用
  • 4mA至20mA供电远端数据采集系统
  • 电池供电应用
  • 系统诊断
  • 触摸屏应用
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