ADV Sensors
ADV-Series Sensors—Bipiolar Digital Switches
Features:
•
•
•
•
•
Bipolar operation (south field ON, north field OFF)
Extremely low operate points for high sensitivity
Digital switch output
MSOP8 and TDFN6 packages
Cannot be damaged by large magnetic fields
Description:
The ADV001-00E is a GMR Digital Switch™ product using a unique bipolar output GMR material. This
material allows the sensor to maintain an operate point with the application of a negative (south pole)
magnetic field, and a release point with the application of a positive (north pole) magnetic field. The
sensoris ideal for magnetic encoders that have alternating north and south poles, or in any other application
where one polarity of field is required to turn the part on and the opposite polarity is required to turn it off.
The magnetic operate/release points are extremely low—approximately +4 Gauss for the operate point
and
−4
Gauss for the release point. Despite the very low values, the operate points are stable over a
temperature range of
−40°C
to +125°C. The high sensitivity to magnetic field and excellent
temperature stability give the ADV001-00E better airgap performance and switching precision
compared to other products. The output is configured for use as a current-sinking on/off type. The IC is
available in an MSOP8 or 2.5 mm x 2.5 mm TDFN6 package.
The following specifications are valid over all operating voltage and temperature ranges:
Parameter
Magnetic Operate Point
1
Magnetic Release Point
1
Operate/Release Differential
Operating Supply Voltage (V
CC
)
Quiescent Supply Current
(V
CC
= 12 V)
Output Drive Current
V
OL
(V
CC
≥
5 V;
20 mA output sink current
2
)
Frequency Response
Temperature Range of Operation
Notes:
1.
2.
3.
4.
Min.
0
−10
2
4.5
2.5
0
Typ.
4
−4
Max.
10
0
12
30
4.5
20
Units
|Oersteds|
|Oersteds|
|Oersteds|
Volts
mA
mA
0.400
100
−40
125
Volts
KHz
°C
Other operate and release points are available; contact NVE for details.
V
OL
at V
CC
= 4.5 V may be higher than 0.400 V.
Large magnetic fields WILL NOT damage NVE GMR Sensors.
1 Oe (Oersted) = 1 Gauss in air = 0.1 mT.
-1-
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