|
|
 |
|
|
 TMR
Angle Sensor |
|
|
The new AAT003-10E
angle sensor is a high-output magnetic sensor element for position measurements
when a rotating magnetic field is applied.
The new part has the same best-in-class accuracy as the groundbreaking AAT001-10E,
but with lower bridge resistance for a relatively low-noise interface to signal-processing
circuitry while still maintaining low power operation.
Key features include:
• Tunneling Magnetoresistance (TMR) technology
• 0.5 degrees maximum angular measurement error
• Large output signal without amplification
• 40 kilohms nominal bridge resistance
• Wide airgap tolerance
• Sine and cosine outputs for direction detection
• Ultraminiature 2.5 mm x 2.5 mm x 0.8 mm
TDFN6
• Not damaged by large magnetic fields
AAT-Series Sensor outputs are proportional to the supply voltage and peak-to-peak
output voltages are much larger than other sensor technologies. Typical applications
include rotary encoders and motor shaft position sensors.
The other member of the AAT family, the AAT001
Angle Sensor, has 1.25 megohm nominal bridge resistance for microwatt
power consumption and is ideal for battery applications.
Product specifications are summarized as follows:
| Parameter |
Min. |
Typ. |
Max. |
Units |
Bridge
Resistance
(each resistor; 25°C) |
AAT001 |
600 |
1250 |
2500 |
kΩ |
| AAT003 |
20 |
40 |
60 |
Peak-to-Peak
Output
(25°C) |
130 |
160 |
|
mV/V |
Angular Measurement
Error (fixed bias) |
|
|
0.5 |
Deg. |
Required Applied
Magnetic Field Strength |
|
30 |
200 |
Oe |
Download
AAT-Series Datasheets >
|
|
|
|
Upcoming
Exhibitions |
|
|
Isolator distributor HY LINE
Power Components is exhibiting at the Embedded World exhibition, February 25
to 27 in Nuremberg, Germany. IsoLoop
Isolated Bus Transceivers are popular for embedded applications.
|
|
|
|
Reference
Design |
|
|
Buffering
Angle Sensors
AAT-Series Angle Sensors can be directly connected to high-impedance analog front
ends or other circuitry, or a buffer can be used if necessary for lower impedance
circuitry:
AAT001/AAT003 Buffer Reference Circuit
The op amp minimum supply voltage is 1.5 volts, while the AAT-Series sensors
have no minimum. Sensitivity increases proportionately to the sensor supply voltage,
as does current consumption. |
|
