ADT002

ADT001/ADT002 Rotation Sensors ADT00X-10E Ultralow Power Rotation Sensors Features Tunneling Magnetoresistance (TMR) technology Extremely low power (1.8 μA typ. at 2.4 V) Precision digital quadrant outputs Wide airgap tolerance Operates with as little as 30 Oersteds of magnetic field Integrated fault detection 2.4 V to 5.5 V supply range −40°C to +125°C operating range Ultraminiature TDFN6 packages tation Functional Diagram and Pinout Vdd Sin FAULT Ro Angular Sensor Fault Sensor Truth Table Angle 0 -90 90 -180 180 -270 270 -360 Output Sin Cos HH HL LL LH Applications Water meters Rotational speed sensors Rotational position sensors GND Cos N/C (for test only) Description The ADT001 and ADT002 rotation sensors are ultralow power, digital-output magnetic rotation sensors. Tunneling Magnetoresistance (TMR) technology allows small size and low power, making the sensors ideal for battery operation. The sensors have two digital, binary outputs. The two outputs are 90 degrees out of phase to provide directional information. An additional output indicates a fault if the magnetic field is too high for accurate measurements. The ADT001 is optimized for edge-sensitive applications and the ADT002 for absolute position. The ADT001 has high hysteresis for noise immunity in applications such as speed sensing and counting rotations. The ADT002 is low hysteresis to provide accurate, absolute rotational quadrant information. The parts are packaged in NVE’s 2.5...