AG920-07E NVE, AG920-07E Datasheet - Page 125

• Manufacturer Part Number: AG920-07E
• Description: KIT EVALUATION GT SENSOR
• Manufacturer: NVE

Specifications of AG920-07E

• Sensor Type: Magnetic. GMR (Giant Magnetoresistive)
• Interface: Analog
• Embedded: No
• Utilized Ic / Part: ABL & AKL Series GT Sensors
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Sensitivity: -
• Sensing Range: -
• Other names: 391-1063

Current Sensing - Detailed Considerations
Care must be taken in interpreting the output waveform when using GMR as current sensors. GMR
sensors function as omnipolar sensors by producing positive output regardless of the magnetic field
direction. In the case of AC excitation, the bipolar field created by a sinusoidal AC current will
produce an output that will look like a full-wave rectified sinusoidal waveform. Biasing the sensor
partway up the curve will restore a sinusoidal output with a DC component.
Although most of the examples given in this section use the AA003-02 sensor element, any of NVE’s
AA-Series, AAH-Series, or AAL-Series analog sensors will function as a current sensor as described
above. The customer can select from a wide range of magnetic sensitivities in order to have the best
sensing characteristics for the current range to be detected.
Current Sensing Application Examples
NVE has a current sensor evaluation kit, AG003-01, which has a variety of different size traces
complete with on-board sensors, available directly or through our distributors.
• Non-intrusive AC or DC current detection or sensing
• PCB mounted current detection or sensing (PCB trace or strap current carrier)
• Toroidal Hall effect current detector or sensor replacements
• Industrial instrumentation
• Industrial process control
• Current probes
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Application Notes