欢迎访问ic37.com |
会员登录 免费注册
发布采购

TLE4917 参数 Datasheet PDF下载

TLE4917图片预览
型号: TLE4917
PDF下载: 下载PDF文件 查看货源
内容描述: 低功耗霍尔开关 [Low Power Hall Switch]
分类和应用: 模拟IC开关信号电路光电二极管
文件页数/大小: 13 页 / 261 K
品牌: INFINEON [ Infineon ]
 浏览型号TLE4917的Datasheet PDF文件第1页浏览型号TLE4917的Datasheet PDF文件第2页浏览型号TLE4917的Datasheet PDF文件第4页浏览型号TLE4917的Datasheet PDF文件第5页浏览型号TLE4917的Datasheet PDF文件第6页浏览型号TLE4917的Datasheet PDF文件第7页浏览型号TLE4917的Datasheet PDF文件第8页浏览型号TLE4917的Datasheet PDF文件第9页  
VS  
1
Bias and  
Com pensation  
Circuits  
Oscillator  
&
Sequencer  
Active Error  
Com pensation  
Threshold  
Generator  
2, 4, 5  
GND  
Comparator  
with  
Hall  
Probe  
Hysteresis  
3
Decision  
Logic  
Q
Latch  
Chopped  
A m plifier  
6
PRG  
AEB02800_C  
Figure 2 Block Diagram  
Circuit Description  
The Low Power Hall IC Switch comprises a Hall probe, bias generator, compensation  
circuits, oscillator, output latch and an n-channel open drain output transistor.  
The bias generator provides currents for the Hall probe and the active circuits.  
Compensation circuits stabilize the temperature behavior and reduce technology variations.  
The Active Error Compensation rejects offsets in signal stages and the influence of  
mechanical stress to the Hall probe caused by molding and soldering processes and other  
thermal stresses in the package. This chopper technique together with the threshold  
generator and the comparator ensures high accurate magnetic switching points.  
Very low power consumption is achieved with a timing scheme controlled by an oscillator  
and a sequencer. This circuitry activates the sensor for 50 µs (typical operating time) sets  
the output state after sequential questioning of the switch points and latches it with the  
beginning of the following standby phase (typ. 130 ms). In the standby phase the average  
current is reduced to typical 3.5 µA. Because of the long standby time compared to the  
operating time the overall averaged current is only slightly higher than the standby current.  
By connecting the programming pin to GND (normal to VS) the Output State can be inverted  
to further reduce the current consumption in applications where a high magnetic field is the  
Data Sheet  
3