epc130/epc131
Photo-receiver Amplifier
Features
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.
Low current consumption
High sensitivity
Analog output
CSP6 package with very small footprint and standard QFN16 pack -
age available
Applications
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.
Light barriers ranging from millimeters to tens of meters
Light curtains
Smoke detectors
Liquid detectors
Heart beat monitors
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.
Device selection table
Light
Reserve
Output
Response
Time
Output
Sensitivity
Model
very
high
digital analog w/o
with slow
fast
low medium high
epc130
epc131
epc134
epc135
epc136
epc137
epc138
epc139
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Functional Block Diagram
VDD
SIGNAL
PROCESSOR
AMP
OUT
PD
CN
CONTROLLER
VSS
© 2011 ESPROS Photonics Corporation
Characteristics subject to change without notice
1
Datasheet epc13x analog - V2.1
www.espros.ch