AG003-01 NVE, AG003-01 Datasheet - Page 99
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
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Signal Conditioning Circuits
A number of methods exist for pre-amplification of an NVE GMR bridge sensor output. This section
shows some representative circuits and compares the relative advantages and disadvantages of some
common configurations. The circuits shown were designed for low power and 5V operation. Low
noise or high performance applications should be designed with lower noise, higher performance
components.
Operational Amplifier (Op Amp) Bridge Preamplifier Circuits
Single Op Amp Bridge Amplifier
The figure below shows a simple circuit for amplifying an NVE AAxxx-02 GMR Magnetic Field
Sensor’s bridge output using a single 5V supply. The advantages of this configuration are simplicity,
low component count, and low cost.
8 Vin+
4 Vin-
+5V
www.nve.com
C1 0.1uF
S
1 Vout-
5 Vout+
INGLE
O
P
phone: 952-829-9217 fax: 952-829-9189
R3
A
MP
R1
Vref
P
- 99 -
REAMPLIFIER
R4
2 -
3 +
LMC7101A/NS
+5V
U2
R2
7 V+
4 V-
C
Application Notes
C2 0.1uF
IRCUIT
6
Vout
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