AG003-01 NVE, AG003-01 Datasheet - Page 104
AG003-01
Manufacturer Part Number
AG003-01
Description
ASSEMBLY CURRENT SENSOR EVAL
Manufacturer
NVE
Specifications of AG003-01
Rohs Status
RoHS non-compliant
Sensor Type
Magnetic. GMR (Giant Magnetoresistive)
Interface
Analog
Embedded
No
Utilized Ic / Part
AA Series Current Sensors
Voltage - Supply
-
Sensitivity
-
Sensing Range
-
Other names
391-1004
- Current page: 104 of 143
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Threshold Detection Circuit
The figure below shows the implementation of a low power threshold detection circuit that utilizes the
AAxxx-02 GMR Magnetic Field Sensor and the Burr Brown INA118 instrumentation amplifier.
Comparator hysteresis has been added around the LM311 comparator to minimize random triggering
of the circuit on potential noise sources and pickup. The gain of the instrumentation amplifier is the
same as before. The hysteresis of the comparator is approximately:
V
h
≈
2.5
R
1
8 Vin+
4 Vin-
+
R
R
+5V
2
1
+
C1 0.1uF
R
1 Vout-
5 Vout+
3
www.nve.com
−
R
T
1
R
HRESHOLD
RG
+
2
+2.5V
R
2
Vref
phone: 952-829-9217 fax: 952-829-9189
R1
3 IN+
1 RG1
2 IN-
8 RG2
5 REF
R2
Neglecting the finite output swing of the comparator.
D
- 104 -
INA118/BB
3 -
2 +
ETECTION
+5V
7
4
U2
-5 V
U3 IM311
C2 0.1uF
+5V
6
4 V-
8 V+
C3 0.1uF
1 G
C
7
IRCUIT
Application Notes
R3
Vout
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