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參數(shù)資料
| 型號(hào)： | HAL300 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Differential Hall Effect Sensor IC |
| 中文描述： | 差分霍爾效應(yīng)傳感器IC |
| 文件頁(yè)數(shù)： | 3/13頁(yè) |
| 文件大小： | 143K |
| 代理商： | HAL300 |
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HAL320
3
Micronas
Solderability
–
Package SOT-89A and SOT-89B: according to
IEC68-2-58
–
Package TO-92UA: according to IEC68-2-20
OUT
GND
3
2
1V
DD
Fig. 1:
Pin configuration
Functional Description
This Hall effect sensor is a monolithic integrated circuit
with 2 Hall plates 2.25 mm apart that switches in re-
sponse to differential magnetic fields. If magnetic fields
with flux lines at right angles to the sensitive areas are
applied to the sensor, the biased Hall plates force Hall
voltages proportional to these fields. The difference of
the Hall voltages 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 induction
of magnets at higher temperatures. If the differential
magnetic field exceeds the threshold levels, the open
drain output switches to the appropriate state. The built-
in hysteresis eliminates oscillation and provides switch-
ing behavior of the output without oscillation.
Magnetic offset caused by mechanical stress at the Hall
plates is compensated for by using the
“
switching offset
compensation technique
”
: An internal oscillator pro-
vides a two phase clock (see Fig. 3). The difference of
the Hall voltages is sampled at the end of the first phase.
At the end of the second phase, both sampled differen-
tial Hall voltages are averaged and compared with the
actual switching point. Subsequently, the open drain
output switches to the appropriate state. The amount of
time that elapses from crossing the magnetic switch lev-
el to the actual switching of the 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 re-
sistors. 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 values
ranging from 0 V to
–
15 V.
HAL320
Temperature
Dependent
Bias
Switch
Hysteresis
Control
Comparator
Output
V
DD
1
OUT
3
Clock
GND
2
Fig. 2:
HAL320 block diagram
Short Circuit &
Overvoltage
Protection
Reverse
Voltage &
Overvoltage
Protection
Hall Plate
S1
Hall Plate
S2
t
V
OL
V
OUT
V
OH
1/f
osc
= 16
μ
s
Fig. 3:
Timing diagram
B
B
ON
f
osc
t
t
t
f
t
I
DD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HAL300_1 | 制造商:MICRONAS 制造商全稱(chēng):MICRONAS 功能描述:Differential Hall Effect Sensor IC |
| HAL300S | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Analog IC |
| HAL300-S | 制造商:LEM 制造商全稱(chēng):LEM 功能描述:Current Transducer HAL 50~600-S |
| HAL300SF-A | 制造商:MICRONAS 制造商全稱(chēng):MICRONAS 功能描述:Differential Hall Effect Sensor IC |
| HAL300SF-K | 制造商:MICRONAS 制造商全稱(chēng):MICRONAS 功能描述:Differential Hall Effect Sensor IC |
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