AA002-02

AA/AB-Series Analog Magnetic Sensors AA/AB-Series Analog Magnetic Sensors Equivalent Circuit V+ (Supply) OUT- OUT+ V- (GND) Idealized Transfer Functions Output Output Features Magnetometer and gradiometer configurations Field ranges from <<0.1 mT to >400 mT Ultrasensitive, high-field, and low-hysteresis versions Wheatstone bridge analog outputs Operation to near-zero voltage Up to 1 MHz bandwidth Up to 150°C operating temperature ULLGA4, TDFN6, MSOP8, and SOIC8 packages Applications Motion, speed, and position control Low-field sensing Motor commutator sensors Noncontact current sensing Field AA-Series Magnetometer Transfer Function Field Gradient AB-Series Gradiometer Transfer Function Description NVE’s analog GMR sensors have high sensitivity, excellent temperature stability, and small size. Their versatility and wide sensing range makes them an excellent choice for a variety of analog sensing applications including industrial and automotive position, speed, and current sensors. The sensors are configured as inherently temperaturecompensating Wheatstone bridges. AA-Series sensors are magnetometers, which detect absolute magnetic field. AB-Series sensors are differential gradiometers, which detect field gradients. Three magnetometer subtypes are available: the standard AA-Series; the ultrasensitive “H” subtype; the high-field, kilooersted range “K” subtype, and the low-hysteresis “L” subtype. Packages are as small as an ultraminiature 1.1 x...