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Analog Devices / Maxim Integrated MAX44284低功耗电流感应放大器

Maxim MAX44284低功耗电流感测放大器是一款高侧电流感测放大器，采用1.7V至5.5V单电源供电。 这些器件经过优化，工作时功耗极低，仅消耗21µA的静态电流。 MAX44284的精度极高，VOS为2µV，增益误差为0.05%。 每个器件的输入共模电压范围为-0.1V至+36V。这些电流感测放大器具有电压输出，并提供四种不同的增益版本。 MAX44284采用小型6焊球、0.4mm脚距WLP封装 (1.3mmx0.9mm) 和6引脚SOT23封装，可在-40°C至+125°C的汽车级温度范围内工作。

特性

  • Supports the Use of Small Current-Sense Resistors to Improve Power-Supply Conversion Efficiency and Measurement Accuracy
    • Input Bias Current of 80nA (max)
    • Very Low 2µV Input Offset Voltage (MAX44284F/H)
    • Extremely Low 50nV/°C Input Offset Tempco Coefficient
    • -0.1V to +36V Wide Input Common-Mode Range
    • Low 0.05% Gain Error
  • Extends Battery Life
    • Low Supply Current of 21µA
    • 1.7V to 5.5V Single Supply
    • Shutdown Input (Independent of VDD)
  • Four Fixed Gain Options Simplify Design
    • 50V/V – MAX44284F
    • 100V/V – MAX44284H
    • 200V/V – MAX44284W
    • 500V/V – MAX44284E

应用

  • Base-Stations
  • DC-DC Current Sensing in Power Management
  • Medical Pulse Oximeters and Infusion Pumps
  • Notebook Computers
  • Portable-/Battery-Powered Systems
  • Smartphones and Tablets

Typical Application Circuit

Analog Devices / Maxim Integrated MAX44284低功耗电流感应放大器
发布日期: 2017-05-15 | 更新日期: 2023-04-21