onsemi NCS21671 Current Sense Amplifiers

onsemi NCS21671 Current Sense Amplifiers feature a zero-drift architecture and enable current sensing with voltage drops as low as 10mV full-scale. The onsemi NCS21671 offers gains ranging from 25 to 200V/V to measure the voltage across shunts at common-mode voltages from -0.1V to 40V. The NCS21671 are available in Micro10 and SC70-6 packages and can operate from a single +1.8V to +5.5V power supply, drawing a maximum of 40μA of supply current.

Features

  • -0.1V to 40V wide common-mode input range 
  • 1.8V to 5.5V supply voltage range
  • 25V max low offset voltage 
  • Rail-to-rail output capability
  • 80A max low current consumption
  • Enable the pin to turn off input and power supply currents
  • Optional input filtering through CIN+ and CIN− pins
  • Pb-free, Halogen free/BFR-free, and RoHS Compliant

Applications

  • Power Bus monitoring
  • Battery current monitor
  • Lighting ballast

Typical Application

Application Circuit Diagram - onsemi NCS21671 Current Sense Amplifiers

onsemi NCS21671 Current Sense Amplifiers