EPC138-CSP6-D.pdf

General Description 

The epc13x family products are monolithic, integrated high sensitive photo-diode amplifiers for light-barrier, light-curtain, and the like applications. It amplifies current pulses from reverse-biased PIN photodiodes (e.g. epc200, epc3xx) and discriminates the amplified input light pulse before driving the open-drain output stage. The device is controlled by an internal digital controller, which uses no external clock signal. The power supply of the device can be connected in anti-polar mode to decrease the wiring effort in matrix operated light-curtain products. The device has been optimized to utilize the least count of external components. This device allows the design of short to long range light barriers from a few millimeters up to tens of meters. epc130/epc131 are the same devices but with an analog output. Please refer to the corresponding data sheet epc130/epc131.

Features 

Low current consumption 

 Digital output 

 Reverse polarity protection 

 Two-wire and open drain output interface

 High sensitivity (epc135/138)

 Fast versions available (epc136/139)

 Light reserve output (epc135/136) 

 High sensitivity and light reserve output (epc134) 

 CSP6 package with very small footprint.

Applications 

 Light barriers ranging from millimeters to tens of meters 

 Light curtains

 Smoke detectors 

 Liquid detectors 

 Heart beat monitors