EPC134_17 Datasheet, PDF (1/11 Pages) Espros Photonics corp – Photo-receiver Amplifier

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epc134/epc135/epc136/epc137/epc138/epc139
Photo-receiver Amplifier
General Description
Features
The epc13x family products are monolithic, integrated high sensi- 
tive 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 am- 
plified 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.
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.
This device allows the design of short to long range light barriers Applications
from a few millimeters up to tens of meters.
 Light barriers ranging from millimeters to tens of meters
epc130/epc131 are the same devices but with an analog output. _{ Light curtains}
Please refer to the corresponding data sheet epc130/epc131.
 Smoke detectors
 Liquid detectors
 Heart beat monitors
Device selection table
Model
Output
Light
Reserve
Output
Response
Time
Sensitivity
digital analog w/o
with slow
fast
low medium high
very
high
epc130
xx
x
x
epc131
xx
xx
epc134 x
x
x
x
epc135 x
xx
x
epc136 x
x
xx
epc137 x
xx
x
epc138 x
x
x
x
epc139 x
x
xx
Functional Block Diagram
OUT
PD
AMP
SIGNAL
PROCESSOR
CN
CONTROLLER
VSS
© 2014 ESPROS Photonics Corporation
Characteristics subject to change without notice
1
Datasheet_epc134-139_digital-V2.5
www.espros.ch