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ADT002 Datasheet Preview

ADT002 Datasheet

Ultralow Power Rotation Sensors

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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
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 mm x 2.5 mm x
0.8 mm TDFN6 surface-mount package.
1
NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.nve.com ©NVE Corporation




NVE

ADT002 Datasheet Preview

ADT002 Datasheet

Ultralow Power Rotation Sensors

No Preview Available !

ADT001/ADT002 Rotation Sensors
Absolute Maximum Ratings
Parameter
Supply Voltage
Storage Temperature
ESD (Human Body Model)
Applied Magnetic Field
Min.
−0.5
−40
Max.
7
170
2000
Unlimited
Units
Volts
°C
Volts
Oe
Operating Specifications
Parameter
Operating Temperature
Supply Voltage
Supply Current
Applied Magnetic Field Strength
Tmin to Tmax; 2.4 V < VDD < 5.5 V unless otherwise stated.
Symbol
Min.
Typ.
Max.
Tmin; Tmax
−40
125
VDD 2.4
5.5
0.55 1.8
3.1
IDDQ
0.8
2.2
2.7
4.6
6.95
30 200
Fault Output Field Strength Threshold
200 300 500
Low-Level Output Voltage
High-Level Output Voltage
Angular Precision/Repeatability
Angular Hysteresis
ADT001
ADT002
Frequency Response
VOL 0
VOH VDD − 0.25
| θH θL |
fMAX
12
3
2
20
4
0.24
VDD
±1.5
28
6
Units
°C
V
μA
Oe
Oe
V
V
deg.
Test Condition
VDD = 2.4V
VDD = 3V
3V < VDD < 3.6V
VDD = 5.5V
Pin 4 not
connected;
field in any
direction
IL = −50 μA
IL = 50 μA
deg. VDD = 3.6V; 25°C
kHz
2
NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.nve.com ©NVE Corporation


Part Number ADT002
Description Ultralow Power Rotation Sensors
Maker NVE
Total Page 13 Pages
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