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“High throughput Salmonella
detector,” awarded by the U.S. Department of Agriculture National Institute
of Food and Agriculture.
More Info >
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Ultralow
Power
Rotation Quadrant Sensor |
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The new ADT002-10E rotation
sensor is an ultralow power, digital-output sensor providing accurate, absolute
rotational quadrant information based on a rotating magnet.
TMR technology enables low power and miniaturization, making the sensors ideal
for battery operation.
The New ADT002-10E Ultralow
Power Rotation Quadrant Sensor
Key features include:
• Precision digital quadrant outputs
• Extremely low power (2 µA typ. at 2.4 V)
• Wide airgap tolerance
• Integrated fault detection
• 2.4 V to 5.5 V supply range
• -40°C to +125°C operating range
• Ultraminiature TDFN6 package
The heart of the unique sensor is an array of four Tunneling Magnetoresistance
(TMR) elements, one for each quadrant:
 ADT002-10E
Functional Block Diagram
The binary outputs correspond
to the sign of the sine and cosine of the rotation, as shown in the truth table:
Angle of
Rotation |
Output |
| Sin |
Cos |
| 0° – 90° |
H |
H |
| 90° – 180° |
H |
L |
| 180° – 270° |
L |
L |
| 270° – 360° |
L |
H |
An additional output indicates a fault if the magnetic field is too high for accurate
measurements.
The new parts are in
stock and available for same-day shipment, with no minimum order.
Demo
Board
The AG932-07E
Evaluation Kit includes a circuit board with an ADT002 rotation sensor,
a rotating split-pole magnet, and simple circuitry to drive LEDs from the sensor
outputs.
Two LEDs follow the sensor outputs; four others indicate the rotational quadrant.
A 3-volt coin cell (included) powers the board.
This video demonstrates the evaluation board and typical external circuitry:
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