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HAL505SF-K 参数 Datasheet PDF下载

HAL505SF-K图片预览
型号: HAL505SF-K
PDF下载: 下载PDF文件 查看货源
内容描述: 霍尔效应传感器系列 [Hall-Effect Sensor Family]
分类和应用: 传感器换能器
文件页数/大小: 48 页 / 1632 K
品牌: MICRONAS [ MICRONAS ]
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HAL 5xy  
DATA SHEET  
5. Application Notes  
5.3. Start-Up Behavior  
5.1. Ambient Temperature  
Due to the active offset compensation, the sensors  
have an initialization time (enable time ten(O)) after  
applying the supply voltage. The parameter ten(O) is  
specified in the Electrical Characteristics (see  
page 15).  
Due to the internal power dissipation, the temperature  
on the silicon chip (junction temperature TJ) is higher  
than the temperature outside the package (ambient  
temperature TA).  
During the initialization time, the output state is not  
defined and the output can toggle. After ten(O), the out-  
put will be low if the applied magnetic field B is above  
TJ = TA + ΔT  
B
ON. The output will be high if B is below BOFF. In case  
of sensors with an inverted switching behavior  
(HAL 516 ... HAL 519), the output state will be high if B  
Under static conditions and continuous operation, the  
following equation applies:  
> BOFF and low if B < BON  
.
Note: For magnetic fields between BOFF and BON, the  
output state of the HAL sensor will be either low  
or high after applying VDD. In order to achieve a  
defined output state, the applied magnetic field  
ΔT = IDD × VDD × Rth  
must be above BON, respectively, below BOFF  
.
For all sensors, the junction temperature range TJ is  
specified. The maximum ambient temperature TAmax  
can be calculated as:  
5.4. EMC and ESD  
TAmax = TJmax ΔT  
For applications with disturbances on the supply line or  
radiated disturbances, a series resistor and a capacitor  
are recommended (see Fig. 5–1). The series resistor  
and the capacitor should be placed as closely as pos-  
sible to the HAL sensor.  
For typical values, use the typical parameters. For  
worst case calculation, use the max. parameters for  
IDD and Rth, and the max. value for VDD from the appli-  
cation.  
Applications with this arrangement passed the EMC  
tests according to the product standards ISO 7637.  
5.2. Extended Operating Conditions  
Please contact Micronas for the detailed investigation  
reports with the EMC and ESD results.  
All sensors fulfil the electrical and magnetic character-  
istics when operated within the Recommended Oper-  
ating Conditions (see page 14).  
R
V
Supply Voltage Below 3.8 V  
220 Ω  
Typically, the sensors operate with supply voltages  
above 3 V, however, below 3.8 V some characteristics  
may be outside the specification.  
R
1.2 kΩ  
L
1
V
DD  
V
V
EMC  
OUT  
3
P
4.7 nF  
20 pF  
Note: The functionality of the sensor below 3.8 V is  
not tested on a regular base. For special test  
conditions, please contact Micronas.  
2
GND  
Fig. 5–1: Test circuit for EMC investigations  
46  
Jan. 11. 2010; DSH000020_004EN  
Micronas  
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