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參數(shù)資料
| 型號(hào)： | UGN3055U |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | MULTIPLEXED TWO-WIRE HALL-EFFECT SENSOR ICs |
| 中文描述： | 復(fù)用雙線霍爾效應(yīng)傳感器集成電路 |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 111K |
| 代理商： | UGN3055U |
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
3055
MULTIPLEXED
TWO-WIRE HALL EFFECT
SENSOR IC
ADDRESSING PROTOCOL
The device may be addressed by modulating
the supply voltage as shown in Figure 1. A
preferred addressing protocol is as follows:
the bus supply voltage is brought down to 0 V
so that all devices on the bus may be reset.
The voltage is then raised to the address
LOW voltage (V
L
) and the bus quiescent
current is measured. The bus is then toggled
between V
L
and V
H
(address HIGH voltage),
with each positive transition representing an
increment in the bus address. After each
voltage transition, the bus current is moni-
tored to check for diagnostic and signal
responses from sensor ICs.
Sensor Addressing
When a sensor detects a bus address equal
to its factory programmed address, it re-
sponds with an increase in its supply current drain (called I
S
during the
HIGH portion of the address cycle). This response may be used as an
indication that the sensor is alive and well on the bus and is also called
the diagnostic response. If the sensor detects an ambient magnetic
field, it also responds with I
S
during the low portion of the address
cycle. This response from the sensor is called the signal response.
When the next positive transition is detected, the sensor becomes
disabled, and its contribution to the bus signal current returns to I
Q
.
Bus Current
Figure 1 displays the above described addressing protocol. The top
trace represents the bus voltage transitions as controlled by the bus
driver (see applications note for an optimal bus driver schematic). The
second trace represents the bus current contribution of sensor (ad-
dress 02). The diagnostic response from the sensor indicates that it
detected its address on the bus; however, no signal response current
is returned, which indicates that sufficient magnetic field is not de-
tected at the chip surface. The third trace represents the current drain
of sensor 03 when a magnetic field is detected. Note both the diag-
nostic and signal response from the sensor. The last trace represents
FIGURE 1
BUS TIMING D1
SAND SIGNAL CURRENTS
DIAGNOSTIC
DIAGNOSTIC
DIAGNOSTIC
DIAGNOSTIC
ADDRESS
n
RESET
DIAGNOSTIC
SENSOR 02 —
DIAGNOSTIC
NSENSOR 01
VH
VL
VRST
0
IS
IQL
IQH
0
IS
0
IS
n IQL
n IQH
0
tphl
tplh
VCLH
VCHL
Dwg. WH-005
BUS
VOLTAGE
SCURRENT
MWIFIELD
SCURRENT
MAGFIELD
BUS CUTWITH
MFIELD AT
SENSOR 03
RESET
IQL
IQH
SENSOR 01
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UGN3056U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| UGN-3056U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Hall-Effect Switch |
| UGN3059KA | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:HALL-EFFECT GEAR-TOOTH SENSORS -AC COUPLED |
| UGN3059TL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Hall-Effect Switch |
| UGN3060KA | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:HALL-EFFECT GEAR-TOOTH SENSORS -ACCOUPLED |
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