NVE AAH004-00E

The AAH004-00E analog magnetic sensor from NVE detect absolute magnetic fields, with a sensitivity range of 1.5Oe to 7.5Oe and sensitivity of 3.2mV/V-Oe to 4.8mV/V-Oe. NVE’s AAH series of analog Giant MagnetoResistive (GMR) sensors offer unique and unparalleled magnetic sensing capabilities. Utilising NVE’s patented GMR materials and on-chip flux concentrators to provide a directionally sensitive output signal, these sensors are characterised by high sensitivity to applied magnetic fields, excellent temperature stability, low power consumption, and small size, making them suitable for use in a wide variety of applications from rugged industrial and automotive position, speed, and current sensors, to low-voltage, battery-powered sensors for use in hand-held instrumentation and implantable medical devices.

• Analog magnetic sensor
• Sensitivity range of 1.5Oe to 7.5Oe
• Saturation of 15Oe
• Sensitivity of 3.2mV/V-Oe to 4.8mV/V-Oe
• Frequency response (DC) to 100KHz
• Temperature range to −50°C to +150°C
• Supply voltage +12V
• MSOP8 package (die-form available for custom applications)
• Output at maximum field of 40mV/V
• High magnetic field sensitivity
• Power dissipation 0.5W
• Maximum hysteresis 15%

The AAH magnetic sensor series are sensitive in one direction in the plane of the IC, with a cosine-scaled falloff in sensitivity as the sensor is rotated away from the sensitive direction. Also, these devices provide the same output for magnetic fields in the positive or negative direction along the axis of sensitivity (omnipolar output). All GMR sensors are designed in a Wheatstone bridge configuration to provide temperature compensation.

The basic AAH series of GMR sensors are general purpose magnetometers for use in a wide variety of applications. They exhibit excellent linearity, a large output signal with applied magnetic fields, stable and linear temperature characteristics, and a purely ratiometric output.

Typical applications for the AAH series include:

• Motion, speed and position sensing
• Low-field sensing
• Motor commutator sensors
• Non-contact current sensing

The below table gives the full specifications of the NVE AAH magnetic sensor series including the AAH004-00E: