GMR sensor has on-chip current strap
Rhopoint Components
Linear, low hysteresis GMR current sensor
Rhopoint Components has announced the AAV003-10E, a highly linear, low hysteresis Giant Magneto Resistance (GMR) current sensor with an on-chip current strap.
A GMR bridge sensor element close to the strap senses the current.
The output of the bridge voltage is bipolar and proportional to the current through the strap over a -80 to +80mA input range.
The sensing element of this device is a bridge of GMR resistors, whose resistance varies with applied magnetic field.
Typical sensitivity is 1mV/V with a 12V supply and no amplification.
The parts come in an ultra-miniature 2.5 x 2.5mm six-pin TDFN package.
AAV003-10E current sensors are targeted at circuit board current sensing for process control and instrumentation.
Their sensitivity makes them ideal for isolated 4-20mA current loop detection.
These devices are suitable for both AC and DC current measurement.
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