Need a power sensor that can sense voltage up to 60VDC and current up to 30A? This is the product for you!

The Allegro MicroSystems ACS37800 power monitoring IC greatly simplifies the addition of power monitoring to many powered systems and is ideal for heavy current applications like:

• Monitoring the power drawn by a 3D-printer
• Monitoring the power drawn from a UAV battery
• Battery charging / conditioning
• Solar / photovoltaic panel power monitoring

Allegro’s Hall-effect-based, galvanically isolated current sensing technology achieves reinforced isolation ratings in a small PCB footprint. These features enable isolated current sensing without expensive Rogowski coils, oversized current transformers, isolated operational amplifiers, or the power loss of shunt resistors.

The ACS37800 power monitoring IC offers key power measurement parameters that can easily be accessed through its digital interface. Dedicated and configurable I/O pins for voltage/current zero crossing, undervoltage and overvoltage reporting, and fast overcurrent fault detection are available. User configuration of the IC is available through on-chip EEPROM.

Our Arduino library makes it simple to add the ACS37800 into your project. We’ve also written a configuration example which you can use to examine and change all of the ACS37800’s settings through the IDE Serial Monitor or a terminal emulator.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.

• Allegro MicroSystems ACS37800
  • UL 60950-1 (ed. 2) and UL 62368-1 (ed. 1) certified
  • Reinforced isolation up to 517 V_RMS
  • 0.85 mΩ primary conductor resistance for low power loss
  • Compatible with floating and non-floating GND
  • 1 kHz bandwidth
  • Current sensing range up to +/- 30 A
  • Default I²C address: 0x60
  • I²C address can be changed and stored in EEPROM
  • Voltage channel RMS noise: +/-0.3mV
  • Current channel RMS noise: +/-0.1A
  • Voltage channel total output error: +/-1% (-40°C to 125°C)
  • Current channel total output error: +/-2% (25°C to 125°C)
  • Current channel total output error: +/-2.7% (-40°C to 25°C)
• Two 0.25” (6mm) through-holes for high current connections

• ACS37800 Datasheet
• Schematic
• Eagle Files
• SparkFun Arduino Library
• Hardware Repo