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參數(shù)資料
| 型號(hào)： | HAL535UA-A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Hall Effect Sensor IC |
| 中文描述： | 霍爾效應(yīng)傳感器IC |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 292K |
| 代理商： | HAL535UA-A |
HAL525, HAL535
Micronas
5
2. Functional Description
The Hall effect sensor is a monolithic integrated circuit
that switches in response to magnetic fields. If a mag-
netic field with flux lines perpendicular to the sensitive
area is applied to the sensor, the biased Hall plate
forces a Hall voltage proportional to this field. The Hall
voltage is compared with the actual threshold level in
the comparator. The temperature-dependent bias
increases the supply voltage of the Hall plates and
adjusts the switching points to the decreasing induc-
tion of magnets at higher temperatures. If the magnetic
field exceeds the threshold levels, the open drain out-
put switches to the appropriate state. The built-in hys-
teresis eliminates oscillation and provides switching
behavior of output without bouncing.
Magnetic offset caused by mechanical stress is com-
pensated for by using the “switching offset compensa-
tion technique”. Therefore, an internal oscillator pro-
vides a two phase clock. The Hall voltage is sampled
at the end of the first phase. At the end of the second
phase, both sampled and actual Hall voltages are
averaged and compared with the actual switching
point. Subsequently, the open drain output switches to
the appropriate state. The time from crossing the mag-
netic switching level to switching of output can vary
between zero and 1/f
osc
.
Shunt protection devices clamp voltage peaks at the
Output-pin and V
DD
-pin together with external series
resistors. Reverse current is limited at the V
DD
-pin by
an internal series resistor up to
15 V. No external
reverse protection diode is needed at the V
DD
-pin for
reverse voltages ranging from 0 V to
15 V.
Fig. 2–1:
HAL525, HAL535 block diagram
Fig. 2–2:
Timing diagram
Reverse
Voltage &
Overvoltage
Protection
Temperature
Dependent
Bias
Hysteresis
Control
Short Circuit
and
Overvoltage
Protection
Hall Plate
Switch
Comparator
Output
Clock
3
OUT
GND
2
1
V
DD
t
V
OL
V
OUT
V
OH
1/f
osc
= 9
μ
s
B
B
ON
f
osc
t
t
t
f
t
I
DD
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| HAL535UA-E | Hall Effect Sensor IC |
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| HAL525 | ; Package/Case:1206; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes; Resistance:1kohm |
相關(guān)代理商/技術(shù)參數(shù) |
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| HAL535UA-E | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Hall Effect Sensor IC |
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| HAL542SF-K | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Hall-Effect Sensor Family |
| HAL542UA-E | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Hall-Effect Sensor Family |
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