欢迎访问ic37.com |
会员登录 免费注册
发布采购

HAL560UA-A 参数 Datasheet PDF下载

HAL560UA-A图片预览
型号: HAL560UA-A
PDF下载: 下载PDF文件 查看货源
内容描述: 双线霍尔效应传感器系列 [Two-Wire Hall Effect Sensor Family]
分类和应用: 传感器
文件页数/大小: 21 页 / 223 K
品牌: MICRONAS [ MICRONAS ]
 浏览型号HAL560UA-A的Datasheet PDF文件第1页浏览型号HAL560UA-A的Datasheet PDF文件第2页浏览型号HAL560UA-A的Datasheet PDF文件第3页浏览型号HAL560UA-A的Datasheet PDF文件第4页浏览型号HAL560UA-A的Datasheet PDF文件第6页浏览型号HAL560UA-A的Datasheet PDF文件第7页浏览型号HAL560UA-A的Datasheet PDF文件第8页浏览型号HAL560UA-A的Datasheet PDF文件第9页  
HAL55x, HAL56x  
2. Functional Description  
HAL55x, HAL56x  
The HAL55x, HAL56x two-wire sensors are monolithic  
integrated circuits which switch in response to magnetic  
fields. If a magnetic 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 induction  
of magnets at higher temperatures.  
Reverse  
V
Temperature  
Hysteresis  
Dependent  
Control  
DD  
1
Voltage &  
Overvoltage  
Protection  
Bias  
Hall Plate  
Comparator  
Current  
Switch  
Source  
Clock  
If the magnetic field exceeds the threshold levels, the  
current source switches to the corresponding state. In  
the low current consumption state, the current source is  
switched off and the current consumption is caused only  
bythecurrentthroughtheHallsensor. Inthehighcurrent  
consumption state, the current source is switched on  
and the current consumption is caused by the current  
through the Hall sensor and the current source. The  
built-in hysteresis eliminates oscillation and provides  
switching behavior of the output signal without bounc-  
ing.  
GND  
2
Fig. 2–1: HAL55x, HAL56x block diagram  
f
osc  
Magnetic offset caused by mechanical stress is com-  
pensated for by using the “switching offset compensa-  
tion technique”. An internal oscillator provides a two-  
phaseclock. Ineachphase, thecurrentisforcedthrough  
the Hall plate in a different direction, and the Hall voltage  
is measured. At the end of the two phases, the Hall volt-  
ages are averaged and thereby the offset voltages are  
eliminated. The average value is compared with the  
fixed switching points. Subsequently, the current con-  
sumption switches to the corresponding state. The  
amount of time elapsed from crossing the magnetic  
switching level to switching of the current level can vary  
t
t
t
t
B
B
B
OFF  
ON  
I
DD  
I
DDhigh  
I
DDlow  
between zero and 1/f  
.
osc  
I
DD  
Shunt protection devices clamp voltage peaks at the  
-pin together with external series resistors. Reverse  
V
DD  
current is limited at the V -pin by an internal series  
DD  
1/f  
osc  
= 6.9 µs  
resistor up to –15 V. No external protection diode is  
needed for reverse voltages ranging from 0 V to –15 V.  
Fig. 2–2: Timing diagram (example: HAL56x)  
Micronas  
5