描述

The LTA180 series of current sense amplifiers (also called current shunt monitors) are

designed for cost-optimized applications, that sense voltage drops across current-sense

resistors at common-mode voltages from –0.2 V to +26 V, independent of the supply

voltage. The LTA180 series integrate a matched resistor gain network in four fixed-gain

device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network

minimizes gain error and reduces the temperature drift.

The LTA180 series operate from a single +2.7-V to +5.5-V power supply, drawing a

maximum of 110μA of supply current. The device is specified from -40℃ to +125℃, and

offered in SOT23-5L packages.


优势和特点

  • Wide common-mode range: –0.2 V to 26 V
  • Offset voltage
    – ±150 μV Maximum at VCM = 0 V
    – ±500 μV Maximum at VCM = 12 V
  • Accuracy
    – Maximum ±1% Gain Error
    – Maximum 1 μV/℃ Offset Drift
  • Gains Options:
    – 20V/V (LTA180A1, LTA180B1)
    – 50V/V (LTA180A2, LTA180B2)
    – 100V/V (LTA180A3, LTA180B3)
    – 200V/V (LTA180A4, LTA180B4)
  • Output slew rate: 1.3 V/μs
  • Quiescent Current: Maximum 230μA
  • Package: SOT23-5L


应用

  • Motor Control
  • Battery Monitor, BMS
  • Power Management
  • Lighting Control
  • Over-Current Detection
  • Solar Inverters


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