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AAT001-10E TMR Sensor
Functional Block Diagram, Marking, and Pinout
The AAT001-10E package is marked “FCVe.” The device contains four sensing resistors with the pinned
layer 90 degrees apart. The resistors are connected as two half-bridges, providing sine and cosine outputs:
FCVe
Vcc
R3 (Cosine)
Vcc
R2 (Sine)
Cosine Output
Cos
GND
R4 (Cosine)
Sin
R1 (Sine)
GND
Sine Output
Operating Specifications
Parameter
Resistance (Each Resistor) 6
Peak-to-Peak Signal Level
Required Applied Magnetic Field Strength
Angular Measurement Error, Variable Bias 3
Angular Measurement Error, Fixed Bias 4
Supply Voltage
Offset Voltage
Temperature Range of Operation
Temperature Coefficient of Resistance
TCOV 5
Test Condition
25°C
Operating at 25°C
Operating
Operating
Operating
Operating
Operating at 25°C
Operating
Operating
Operating
Min.
0.6
130
30
? 10
? 40
Typ.
1.25
160
? 0.13
? 0.16
Max.
2.5
180
200
3
0.5
5.5
10
125
Units
M ?
mV/V
Oe 2
Angular Degrees
Angular Degrees
V
mV/V
° C
%/ ° C
%/ ° C
Absolute Maximum Ratings
Parameter
Supply Voltage
Storage Temperature
ESD (Human Body Model)
Applied Magnetic Field 1
Min.
? 40
Typ.
Max.
7
170
2,000
Unlimited
Units
Volts
° C
Volts
Oe
Notes:
1.
2.
3.
4.
5.
6.
Large magnetic fields CANNOT damage NVE sensors.
1 Oe (Oersted) = 1 Gauss in air = 0.1 millitesla = 79.8 A/m.
Variable Bias means the magnetic field strength at the sensor can vary across the specification range; this is the same as a variable airgap between the
bias magnet and the sensor.
Fixed Bias means the magnetic field strength at the sensor is constant; this is the same as a fixed airgap between the bias magnet and the sensor.
TCOV is the percent change in voltage signal over temperature with a constant supply voltage.
Resistance is specified with the saturating magnetic field applied.
NVE Corporation
?
11409 Valley View Road, Eden Prairie, MN 55344-3617
?
(952) 829-9217
?
www.nve.com
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