What current sensors should I use with ADE ICs?
Analog Devices does not currently partner with or recommend any current sensor manufacturer. Meter manufacturers and other customers must perform their own evaluation and selection of current sensors. If the full dynamic range of ADE ICs' performance is desired, then care should be taken to use current sensors that have the desired accuracy over this range.
However some of the benefits and drawbacks of the different current sensor technologies are provided as a table below:
Low resistance Shunt
Very low cost, Good Linearity
Poor high current capability, DC offset, parasitic inductance
High current performance, Low power consumption
Hysteresis/Saturation due to DC, phase shift
Hall Effect Sensor
High current performance, wide dynamic range
Hysteresis/Saturation, Higher cost, temperature drift
Rogowski coil (Air-Core CT)
Low cost, No saturation limit, low power consumption, immunity to DC offset, wide dynamic range, very low temperature range
Output is derivative of voltage signal- requires an analog (or digital) integrator. EMI sensitivity.
Most of the newer chips have a built-in digital integrator for easy interface with a Rogowski coil. In all cases, the integrator can be turned off to interface with a current transformer (CT) or shunt.
Some of the current sensor manufacturers are listed in the attached file. Please note that we do not recommend or partner with any of these companies.
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