AH49FZ3TR-G1 查看數據表（PDF） - BCD Semiconductor
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AH49FZ3TR-G1 Datasheet PDF : 10 Pages
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Preliminary Datasheet
LINEAR HALL EFFECT IC
AH49F
Electrical Characteristics
VCC=5V, TA=25°C, unless otherwise specified.
Parameter
Supply Current
Quiescent
Output
Voltage
Output
Voltage
Sensitivity
Output Voltage Span
Output Resistor
Linear Magnetic Range
Linearity of Span
Output Noise
Symbol
ICC
VNULL
VSEN
VOUT_S
ROUT
B
Conditions
Min
2
B=0 (Gauss)
2.25
B=0 to
(Gauss)
±600
1.7
1.0 to
(VCC-1.0)
±500
Bandwidth=10Hz
to 10kHz
Typ
3
2.5
2.1
0.8 to
(Vcc-0.8)
60
±800
0.7
90
Max
4
2.75
Unit
mA
V
2.5 mV/Gauss
V
120
Ω
Gauss
%
μV
Transferring Characteristics (VCC=5V)
When there is no outside magnetic field (B=0Gauss),
the quiescent output voltage is one-half the supply
voltage in general.
For TO-92S package, if a south magnetic pole
approaches the front face (the side with marking ID)
of the Hall effect sensor, the circuit will drive the
output voltage higher. In contrary, a north magnetic
pole will drive the output voltage lower. The
variations of voltage level up or down are
symmetrical. Because the SOT-23-3 is reversed
packaging with TO-92S, so the magnetic
performance is also reversed. Therefore, if the
reversed magnetic pole approaches the front face, the
output is the same as TO-92S package. Greatest
magnetic sensitivity is obtained with a supply voltage
of 8V, but at the cost of increased supply current and
a slight loss of output symmetry. So, it is not
recommended to work in such condition unless the
South Pole
output voltage magnitude is a main issue. The output
signal can be capacitively coupled to a next-level
amplifier for further amplifying if the changing
frequency of the magnetic field is high.
V
4.0V
Typical
Output
Voltage
2.5V
-800 -400
1.0V
0
400
B (Gauss)
800
Figure 4. Transferring Characteristic of AH49F
North Pole
For TO-92S
For SOT-23-3
Figure 5. Magnetic Characteristic of AH49F
Jun. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
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