参数资料
型号: A1321LUA-TL
元件分类: 磁阻传感器
英文描述: MAGNETIC FIELD SENSOR-HALL EFFECT, 10mT, 0.20-4.70V, RECTANGULAR, THROUGH HOLE MOUNT
封装: SIP-3
文件页数: 7/11页
文件大小: 763K
代理商: A1321LUA-TL
A1321/A1322/A1323
RATIOMETRIC, LINEAR
HALL EFFECT SENSOR
Rev. 1.6 28Aug03 CMG
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright 2003 Allegro MicroSystems, Inc.
CHARACTERISTIC DEFINITIONS
Quiescent Voltage Output. In the quiescent state (no
magnetic field), the output equals one half of the supply
voltage over the operating voltage and temperature
range. Due to internal component tolerances and
thermal considerations, there is a tolerance on the
quiescent voltage output and on the quiescent voltage
output as a function of supply voltage and ambient
temperature. For purposes of specification, the
quiescent voltage output as a function of temperature is
defined in magnetic flux density units (B) as
V
OQ(
T)(B)
)
25
(
)
25
(
)
(
)
(
C
OQ
T
OQ
Sens
V
A
°
=
(1)
This calculation yields the device’s equivalent accuracy,
over the operating temperature range, in gauss.
Sensitivity. The presence of a south-pole magnetic
field perpendicular to the package face (the branded
surface) will increase the output voltage from its
quiescent value toward the supply voltage rail by an
amount proportional to the magnetic field applied.
Conversely, the application of a north pole will decrease
the output voltage from its quiescent value. This
proportionality is specified as the sensitivity of the device
and is defined as
B
V
Sens
B
O
B
O
2
)
(
)
(
+
=
(2)
The stability of sensitivity as a function of temperature is
defined as
%
100
)
25
(
)
25
(
)
(
)
(
×
=
°
C
TA
T
Sens
(3)
Ratiometric. The A132X family features a ratiometric
output. The quiescent voltage output and sensitivity are
proportional to the supply voltage (ratiometric).
The percent ratiometric change in the quiescent voltage
output is defined as
V
OQ(
V)
%
100
5
/
)
5
(
)
(
×
=
V
CC
V
OQ
Vcc
OQ
(4)
and the percent ratiometric change in sensitivity is
defined as
%
100
5
/
)
5
(
)
(
)
(
×
=
V
Sens
CC
V
Vcc
V
(5)
Linearity and Symmetry. The on-chip output stage is
designed to provide a linear output with a supply voltage
of 5 V. Although application of very high magnetic fields
will not damage these devices, it will force the output
into a non-linear region. Linearity in percent is
measured and defined as
%
100
)
(
2
)
2
/
(
)
(
×
=
+
OQ
B
O
OQ
B
O
V
Lin
(6)
%
100
)
(
2
)
2
/
(
)
(
×
=
OQ
B
O
OQ
B
O
V
Lin
(7)
and output symmetry as
%
100
)
(
)
(
)
(
×
=
B
O
OQ
B
O
V
Sym
(8)
相关PDF资料
PDF描述
A1323LLHLT-T MAGNETIC FIELD SENSOR-HALL EFFECT, 0.20-4.70V, RECTANGULAR, SURFACE MOUNT
A1321LUA-T MAGNETIC FIELD SENSOR-HALL EFFECT, 0.20-4.70V, RECTANGULAR, THROUGH HOLE MOUNT
A1322LLHLT-T MAGNETIC FIELD SENSOR-HALL EFFECT, 0.20-4.70V, RECTANGULAR, SURFACE MOUNT
A1325LUA-T MAGNETIC FIELD SENSOR-HALL EFFECT, RECTANGULAR, THROUGH HOLE MOUNT
A1326LUA-T MAGNETIC FIELD SENSOR-HALL EFFECT, RECTANGULAR, THROUGH HOLE MOUNT
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