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參數(shù)資料
| 型號： | A3054 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Multiplexed Two-Wire Hall Effect Sensor(多路復用2線霍爾效應傳感器) |
| 中文描述： | 復用兩線霍爾效應傳感器（多路復用2線霍爾效應傳感器） |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 87K |
| 代理商： | A3054 |
3054
MULTIPLEXED
TWO-WIRE
HALL-EFFECT SENSOR ICs
FUNCTIONAL BLOCK DIAGRAM
SENSOR LOCATION
(
±
0.005” [0.13 mm] die placement)
CLOCK
Dwg. FH-009
BUS
SWITCH IN
(OPTIONAL)
GROUND
CMOS LOGIC
REG
COMP
COMP
RESET
1
3
2
1
3
2
Dwg. MH-002-10A
0.015"
0.38 mm
NOM
BRANDED
SURFACE
ACTIVE AREA DEPTH
0.073"
1.85 mm
A
0.090"
2.29 mm
DEFINITION OF TERMS
Sensor Address
Each bus sensor has a factory-specified predefined
address. At present, allowable sensor addresses are
integers from 01 to 30.
LOW-to-HlGH Clock Threshold (V
CLH
)
Minimum voltage required during the positive-going
transition to increment the bus address and trigger a
diagnostic response from the bus sensors. This is also
the maximum threshold of the on-chip comparator that
monitors the supply voltage, V
BUS
.
HlGH-to-LOW Threshold (V
HL
)
Maximum voltage required during the negative-going
transition to trigger a signal current response from the bus
sensors. This is also the maximum threshold of the
on-chip comparator that monitors the supply voltage,
V
BUS
.
Bus HIGH Voltage (V
H
)
Bus HIGH voltage during addressing. Voltage should
be greater than V
CLH
.
Address LOW Voltage (V
L
)
Bus LOW voltage during addressing. Voltage should
be greater than V
RST
and less than V
CHL
.
Bus Reset Voltage (V
RST
)
Voltage level while resetting sensors.
Sensor Quiescent Current Drain (I
Q
)
The current drain of bus sensors when active but not
addressed. I
QH
is the quiescent current drain when the
sensor is not addressed and is at V
H
I
QL
is the quiescent
current drain when the sensor is not addressed and is at
V
L
. Note that I
QL
is greater than I
QH
.
Diagnostic Phase
Period on the bus when the address voltage is at V
H
.
During this period, a correctly addressed sensor responds
by increasing its current drain on the bus. This response
from the sensor is called the
diagnostic response
and
the bus current increase s called the
diagnostic current.
Signal Phase
Period on the bus when the address voltage is at V
L
.
During this period, a correctly addressed sensor that
detects a magnetic field greater than the magnetic oper-
ate point, B
OP
, responds by maintaining a current drain of
I
S
on the bus. This response from the sensor is called the
signal response
and the bus current is called the
signal
current.
Sensor Address Response Current (I
S
)
Sensor current during the diagnostic and the signal
responses of the bus sensor. This is accomplished by
enabling an internal constant-current source.
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