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参数资料
| 型号： | A3054SU-23 |
| 元件分类： | 磁阻传感器 |
| 英文描述： | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.5-30mT, 3.90V, RECTANGULAR, THROUGH HOLE MOUNT |
| 封装： | 0.060 INCH, PLASTIC, SIP-3 |
| 文件页数： | 6/10页 |
| 文件大小： | 130K |
| 代理商： | A3054SU-23 |
3054
MULTIPLEXED
TWO-WIRE
HALL-EFFECT SENSOR ICs
www.allegromicro.com
5
ofthe address cycle. This response may be
used as an indication that the sensor is "alive
and well" on the bus and is called the
diag-
nostic response. If the sensor detects an
ambient magnetic field, it continues with IS
during the low portion of the address cycle.
This response from the sensor is called the
signal response. When the next positive
(address) transition is detected, the sensor
becomes disabled, and its contribution to the
bus signal current returns to IQ.
Bus Current
Figure 1 shows the addressing protocol.
The top trace represents the bus voltage
transitions as controlled by the bus driver
(see Applications Notes for an optimal bus
driver schematic). The second trace repre-
sents the bus current contribution of Sensor
02. The
diagnostic response from the sensor
indicates that it detected its address on the
bus. However, no
signal current is shown,
which indicates that sufficient magnetic field
is not detected at the chip surface and that
pin 3 is open circuited. The third trace
represents the current drain of Sensor 03
when a magnetic field is detected. Note both
the
diagnostic and signal currents from the
sensor. The last trace represents the overall
bus current drain. When no sensors are
addressed, the net bus current is the sum of
quiescent currents of all sensors on the bus
(for 'n' sensors, the bus current drain is
n IQ).
Bus Issues
After a reset, while at the address LOW
voltage (VL), and before the first address
pulse, bus current calibration may be per-
formed. This feature allows for fail-safe
detection of signal current and eliminates
detection problems caused by low signal
current (IS), the operation of sensors at
various ambient temperatures, lot-to-lot
variation of quiescent current, and the
addition or replacement of sensors to the bus
while in the field. At present, a maximum of
30 active sensors can coexist on the same
bus, each with a different address. Address
TYPICAL DEVICE QUIESCENT CURRENT
FIGURE 2
SENSOR CONNECTIONS
Dwg. EH-004
1
3
2
1
3
2
NC
SWITCH
POSITIVE BUS SUPPLY
BUS RETURN
X
6
912
15
SUPPLY VOLTAGE, V BUS IN VOLTS
0
Dwg. GH-045
3
QUIESCENT
CURRENT,
I
O
IN
mA
0
0.5
1.0
1.5
2.0
T
= +25
°C
A
相关PDF资料 |
PDF描述 |
|---|---|
| A3054KU-02 | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.5-30mT, 3.90V, RECTANGULAR, THROUGH HOLE MOUNT |
| A3054KU-16 | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.5-30mT, 3.90V, RECTANGULAR, THROUGH HOLE MOUNT |
| A3054SU-30 | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.5-30mT, 3.90V, RECTANGULAR, THROUGH HOLE MOUNT |
| A3054KU-06 | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.5-30mT, 3.90V, RECTANGULAR, THROUGH HOLE MOUNT |
| A3054KU-13 | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.5-30mT, 3.90V, RECTANGULAR, THROUGH HOLE MOUNT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A3054SU-XX | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Hall-Effect Switch |
| A305605 | 制造商:TE Connectivity 功能描述:CONNECTOR |
| A305606MTA1A2A3SPE | 制造商:MAGNUM / COOPER 功能描述: |
| A3056EU | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED |
| A3056LU | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED |
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