描述

The LTA181 series of bidirectional zero-drift current sense amplifier is designed for cost optimized solution, which can sense drops across shunts at common-mode voltages from –0.2 V to 30 V, independent of the supply voltage. Unidirectional operation allows the LTA181 series to measure currents through a resistive shunt in one direction, while bidirectional operation allows the device

to measure currents through a resistive shunt in two directions. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10mV full- scale. The LTA181 series operates from a single +2.7 V to +5.5 V power supply, drawing a maximum of 180μA of supply current. The device is specified from –40℃ to +105℃, and offered in SOT23-6L and

SC70-6L packages.


优势和特点

  • Wide common-mode range: -0.2 V to 30 V
  • Maximum ±150 μV Offset voltage at Vcm = 0V
  • Accuracy
    – Maximum ±1 % Gain Error
    – Maximum 1.5 μV/℃ Offset Drift
    – Maximum 20 ppm/℃ Gain Drift
  • Choice of Gains:
    – LTA181A1: 20 V/V
    – LTA181A2: 50 V/V
    – LTA181A3: 100 V/V
    – LTA181A4: 200 V/V
  • Quiescent Current: Maximum 180 μA


应用

  • Power Management
  • Battery Chargers
  • Electrical Cigarette
  • Smart Phones and Tablets
  • Notebook Computers
  • Telecom Equipments
  • Welding Equipments


邮箱:sales@linearin.com

电话:(86) 21 6323 3310

友情链接 百度