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EPC111 参数 Datasheet PDF下载

EPC111图片预览
型号: EPC111
PDF下载: 下载PDF文件 查看货源
内容描述: 完全集成的独立光栅驱动与接收器 [Fully integrated standalone light barrier driver & receiver]
分类和应用: 驱动栅驱动
文件页数/大小: 14 页 / 456 K
品牌: EPC [ 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)
VDD
VDD
1 (9)
LED
8 (14)
V
LED
Interface
Parameter
Memory
VDD33
9 (12)
Voltage Regulator
LED
Processor
VDD18
10 (10)
Controller
Signal
Processor
PD
f
3 (6)
D1
2 (7)
4 (4)
7 (15)
6 (1)
5 (2)
GND
NC
NC
OUTN OUTH
Figure 1: Block Diagram
Type
epc111
epc112
Response Time
Medium
Fast
Sensitivity
Medium (High)
Medium
Typical Application
Long range light barrier
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