Current Sense Amplifiers

By ON Semiconductor 150

Current Sense Amplifiers

ON Semiconductor's AEC-Q100 qualified families of voltage output current sense amplifiers can measure voltage across shunts at common-mode voltages from -0.3 V to 26 V, independent of supply voltage. With a fixed gain, the low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10 mV full-scale. These devices can operate from a single +2.2 V to +26 V power supply, drawing a maximum of 150 µA of supply current.

Features
  • Wide common-mode input range: -0.3 V to 26 V
  • Low offset voltage: ±35 µV, ±100 µV, or ±150 µV max.
  • Low offset drift: 0.5 µV/°C max.
  • Supply voltage: 2.2 V to 26 V
Benefits
  • High-side current sensing for high voltage systems
  • Low Ohm value current sense resistors
  • High accuracy overtemperature leading to better power efficiency
  • Wide supply voltage range provides system flexibility
Applications
  • Power monitoring
  • Power adapters
  • LED power supply
  • Overcurrent protection
  • Automotive
  • Closed loop feedback circuits
End Products
  • White goods
  • Automotive
  • Lighting
  • Laptop/notebooks PC
  • Fast chargers in smartphones and tablet
  • Telecom DC-DC modules
  • E-cigarettes
  • Computing servers
  • Wireless charging
  • High end computing/servers

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