NVEs AA and AB-Series analog GMR and TMR sensors have high sensitivity,
excellent temperature stability, low power consumption, and small size. Their
unmatched versatility make them an excellent choice for a wide range of analog
sensing applications from rugged industrial and automotive position, speed, and
current sensors to low voltage, battery-powered sensors for handheld instrumentation,
and implantable medical devices.
AA-Series sensors use NVE's patented spintronic materials to provide a directionally-sensitive
output. These sensors are sensitive in one direction in the plane of the IC. These
devices provide omnipolar output, that is the same output for magnetic fields
in the positive or negative direction along the axis of sensitivity. All sensors
use a temperature compensating Wheatstone bridge configuration. Five AA-Series
families are available: the standard AA-Series; the AAH-Series; AAL-Series; the
AAT-Series, and the AAV-Series. Their key characteristics are summarized in the
Very, Very High
Operating Field Range
AB-Series sensors are differential devices, or gradiometers. Two families of
AB sensors are offered: the standard AB-Series and the high-sensitivity ABH-Series.
They have operational characteristics similar to the AA and AAH sensors described
above, but with the bipolar linear output characteristics of a differential sensor.
AAV-Series sensors are used as current sensors because of their very low hysteresis.
AAT-Series sensors are run in saturation as angle sensors because of their very
low hysteresis and high sensitivity.