epc130/epc131

Photo-receiver Amplifier

General Description

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. epc300) and generates an analog output

signal, driven by a push-pull output stage. This device allows the

design of short to long range light barriers from a few millimeters

up to tens of meters.

The analog output can be analyzed by signal processing circuitry

in oder to extract weak optical signals on a heavy noise floor.

Thus, very sensitive light barriers or other optical sensors can be

built with very limited effort.

The epc13x is controlled by a digital controller, which uses no ex-

ternal clock signal. The device has been optimized to utilize the

least count of external components.

epc134-epc139 are the same devices but with an digital output.

Please refer to the corresponding data sheet.

Features



Low current consumption



High sensitivity



Analog output



CSP6 package with very small footprint and standard QFN16 pack -

age available

Applications



Light barriers ranging from millimeters to tens of meters



Light curtains



Smoke detectors



Liquid detectors



Heart beat monitors

Device selection table

Model

Output

digital analog w/o

fast

high

epc130

x

x

x

epc131

x

x

x

epc134

x

x

x

x

epc135

x

x

x

x

epc136

x

x

x

x

epc137

x

x

x

x

epc138

x

x

x

x

epc139

x

x

x

x

Light

Reserve

Output

Response

Time

Sensitivity

with

slow

low medium

very

high

Functional Block Diagram

SIGNAL

PROCESSOR

OUT

AMP

PD

CN

CONTROLLER

VSS

VDD

© 2011 ESPROS Photonics Corporation

Characteristics subject to change without notice

1

Datasheet epc13x analog - V2.1

www.espros.ch