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Zero-Drift, 52V High-Side Current Sense Amplifier

The MCP6C04 high-side current sense amplifier from Microchip provides input offset voltage correction for very-low offset and offset drift. The need to accurately measure a dynamic current is critical in a wide variety of applications, such as monitoring or charging batteries, creating a current controlled feedback loop for a power supply or motor, to simply monitoring current levels for safety reasons. This device is offered with preset gains of 20, 50 and 100 V/V. The input common-mode range extends from 3V to 52V, and the power supply operating voltage is from 2V to 5.5V. This device is specified from –40°C to +125°C (E-Temp) and is provided in the SOT-23 package.


FEATURES

  • Zero-drift architecture

  • Bidirectional or unidirectional operation

  • Maximum offset less than 30 μV

  • Maximum offset drift less than 180 nV/ºC

  • Specified input common-mode range: 3V to 52V

  • Fixed gain options: 20, 50, 100 V/V

  • Bandwidth of 500 kHz (typical)

  • Enhanced EMI rejection

  • Specified from –40 to +125ºC

  • Small 6-pin SOT-23 package


APPLICATIONS

  • Actuator controls

  • Industrial control and automation

  • Power management systems

  • Motor control

  • Battery monitoring/control


BENEFITS

The zero-drift architecture allows the use of smaller shunt resistors (lowering power dissipation and increasing efficiency) without sacrificing resolution

An integrated, on-chip filter reduces high frequency Electromagnetic Interference (EMI), which makes the device ideal for harsh and noisy environments.


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