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EPC111 Datasheet(PDF) 1 Page - Espros Photonics corp

Part No. EPC111
Description  Fully integrated standalone light barrier driver & receiver
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Manufacturer  EPC [Espros Photonics corp]
Direct Link  http://www.espros.ch
Logo EPC - Espros Photonics corp

EPC111 Datasheet(HTML) 1 Page - Espros Photonics corp

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epc111/112
Fully integrated standalone light barrier driver & receiver
General Description
The epc111/112 is a general purpose, fully integrated self-contained
CMOS circuit family to be used in light-barrier applications.
The chip contains a controller which drives an LED, typically an IR-
LED. The LED is used in a pulsed mode to increase the signal-to-
noise ratio even when there is very strong sunlight biasing the photo
diode.
It contains also a high sensitive photo diode amplifier and a signal
conditioning circuitry to cancel unwanted environmental light including
strong sunlight and pulsed light sources. The receiver is built around a
synchronous demodulator circuitry. Two output signals with different
threshold levels are implemented in order to trigger the light barrier
output or to indicate light reserve.
The chip also includes a power supply circuitry to establish all
internally required voltages from one source only.
It can be used as a standalone device forming the whole core of an
industrial light barrier.
Features
Fully integrated light barrier chip
Needs just a photo diode and a LED with a LED driver
Various types are available, i.e. high sensitivity or high speed
Integrated clock generator
CSP10 package with very small footprint
or standard QFN16 package available
Applications
Light barriers ranging from millimeters to tens of meters
Smoke detectors
Liquid detectors
Functional Block Diagram
for 10-Pin Chip Scale Package (for 16-pin QFN Package)
Functional Block diagram epc70x
LST
OUTH
Parameter
Memory
Interface
OUTN
NC
VDD33
PD
16.12.2010
Page 1
File:
This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission
.
LED
D1
V
LED
f
VDD18
Signal
Processor
Processor
Controller
GND
VDD
LED
9 (12)
10 (10)
7 (15)
4 (4)
1 (9)
VDD
2 (7)
8 (14)
3 (6)
5 (2)
6 (1)
NC
Figure 1: Block Diagram
Type
Response Time
Sensitivity
Typical Application
epc111
Medium
Medium (High)
Long range light barrier
epc112
Fast
Medium
High speed detection rate
Table 1: Characteristics of available types
© 2011 ESPROS Photonics Corporation
Characteristics subject to change without notice
1
Datasheet epc111_112 - V2.2
www.espros.ch


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