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.

• 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
  

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