AA and AB-Series Analog Sensors

Analog Sensor catalog section (.pdf) AAV-Series data sheet (.pdf) AAT-Series data sheet (.pdf)

Quick Reference Guide

NVE's 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, with a cosine-scaled fall-off in sensitivity as the sensor is rotated away from the sensitive direction. 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. The sensors are offered in SOIC8, MSOP8, and TDFN6 packages, and in die form by special order.

Five families of NVE's AA-Series sensors 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 following table:

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.

AB-Series sensors are differential devices, or gradiometers, utilizing the high sensitivity of NVE's GMR materials. 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.

(N. America Only)