AB Sensors
- 24 -
www.nve.com
phone: 952-829-9217 fax: 952-829-9189
AB Sensors
Features:
" Excellent Sensitivity to Applied Magnetic Fields
" Wheatstone Bridge Analog Output
" Temperature Tolerance to 125癈 Continuous
" Wide Linear Range of Operation
" Near-Zero Voltage Operation
" DC to >1MHz Frequency Response
" Small, Low-Profile Surface Mount Packages
Applications:
" General Differential Field Sensing
" Gear Tooth and Encoder Speed and Position Sensing
" Low Power, Low Voltage Applications
Description:
The AB-Series GMR sensors are general-purpose gradiometers for use in a wide variety of
applications. Two pairs of unshielded GMR sensor elements provide for directional sensing of small
gradients in large and small magnetic fields. The ability to detect only magnetic gradients allows low
sensitivity to external sources of uniform magnetic field allowing these sensors to work successfully in
high magnetic noise environments such as near electric motors or current carrying wires.
V- (ground)
OUT B
Pin 1
OUT A
V+ (supply)
Pinout
NVE
ABxxx-02
Axis of Sensitivity
X
Y
GMR
pin 5, OUT B
Functional Block diagram
pin 1, OUT A
pin 4, V-
(ground)
pin 8, V+(supply)
Y
Y
X
X
Magnetic Characteristics:
Part
Number
Saturation
Field (Oe
1
)
Linear
Range
(|Oe
1
|)
Resistor
Sensitivity
(%R / Oe
1
)
Resistance
(Ohms)
Package
2
Die Size
3
(?/SPAN>m)
Min Max Min Max
AB001-02
250
10
175 0.02 0.03 2.5K ?0%
SOIC8
651x1231
AB001-00
250
10
175 0.02 0.03 2.5K ?0%
MSOP8
651x1231
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