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EPC110 参数 Datasheet PDF下载

EPC110图片预览
型号: EPC110
PDF下载: 下载PDF文件 查看货源
内容描述: 完全集成的可配置的光障的驱动程序和接收器 [Fully integrated configurable light barrier driver & receiver]
分类和应用: 驱动
文件页数/大小: 27 页 / 588 K
品牌: EPC [ ESPROS PHOTONICS CORP ]
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epc110  
The same principle applies to the counter and signal of OUTH.  
The parameter INC defines the delay nV in number of clock cycles from the start of a pulse chain to the negative edge of OUTN.  
The parameter DEC defines the delay nM from the end of a pulse chain to the positive edge of OUTN.  
Application  
example  
No. of  
Pulses nM  
No. of  
missing Pulses nV  
Long range  
High speed  
8
3
8
2
Table 2: Example: Settings based of filter coefficients INC and DEC  
Light Pulse Detection Output OUTN  
The epc110 contains two digital outputs to indicate that a valid signal of light pulses are received by the photo diode. The first output OUTN is  
triggered, when the lower threshold is reached by the input signal (see Figure 5). This output is used usually to drive the output of the light  
barrier. This is a fully CMOS compatible digital output.  
Light Reserve Output OUTH  
However, if the incoming signal is just at the trigger threshold of OUTN, an unstable situation can occur. Thus, a second output OUTH is  
integrated with a higher trigger threshold to indicate that a certain 'light reserve' is reached (see Figure 5). This output is usually used to drive  
a visible LED to indicate to the operator a stable detection function of the light barrier. To have not too short pulses OUTH, this signal is  
stimulated by signal OUTH Filter and synchronized reseted by OUTN.  
Emitter LED  
OUTN Filter  
OUTH Filter  
OUTN  
OUTH  
Figure 7: synchronization OUTH with OUTN  
The trigger threshold of OUTH is set usually approx. 50% above the trigger threshold of OUTN.  
This output is not CMOS compatible. Its voltage is depending of the load according to Figure 8.  
OUTH low max.  
OUTH high max.: 3.6V / - 40ºC  
OUTH high typ.  
OUTH high min.: 3.0V / + 85ºC  
Voltage OUTH [V]  
Figure 8: Output voltage versus output current of output OUTH  
© 2011 ESPROS Photonics Corporation  
Characteristics subject to change without notice  
9
Datasheet epc110 - V2.1  
www.espros.ch  
 
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