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OPB780KIT

Description
Optical sensor development tool color sensing kit
CategoryDevelopment board/suite/development tools   
File Size290KB,9 Pages
ManufacturerOPTEK(TT Electronics)
Websitehttp://www.ttelectronics.com/optek-technology
Environmental Compliance
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OPB780KIT Overview

Optical sensor development tool color sensing kit

OPB780KIT Parametric

Parameter NameAttribute value
MakerOPTEK(TT Electronics)
Product CategoryOptical sensor development tools
RoHSyes
Maximum operating temperature+ 85 C
Minimum operating temperature- 40 C
EncapsulationBox
Description/FunctionColor sensor light to frequency ki
OPB780-Kit
Color Sensor Evaluation Kit
The OPB780-Kit is designed to provide the design engineer an
easy way to evaluate the capability of the OPB780 Color Sensor.
The
OPB780Z
is a full color sensor with 4
different frequencies relating directly to a
specific color seen by the sensor.
Block
The
OPB780Z
color sensor uses a
Photodiode Array
Light
programmable
light-to-frequency
S2
S3
converter that combines 64 configurable
silicon photodiodes (on a 144 um center
array and measuring 120 um x 120 um
6
4
each) and a current-to-frequency
converter on a single monolithic CMOS integrated
circuit, packaged in a small, lightweight package that
makes it ideal for using in miniature applications.
The output is a square wave (50% duty cycle) with a
frequency directly proportional to light chromaticity and
irradiance from four filtered diode arrays.
The light-to-frequency converter reads an 8 x 8 array of
photodiodes that consists of four groups of 16
photodiodes each, segregated by color:
16
photodiodes with red filters, 16 photodiodes with green
filters, 16 photodiodes with blue filters and 16
photodiodes with clear filters. Each color’s group of 16
photodiodes is interdigitated to minimize the effect of
non-uniformity of incident irradiance. Each color’s
group is also connected in parallel. The type of
photodiode used during operation is pin-selectable.
The internal photodiode used by the device is controlled
by two logic inputs, S2 and S3.
Pin 4 (S2)
H
H
L
L
Pin 6 (S3)
H
L
L
H
Diode Filter
Green
Clear
Red
Blue
7,8
Current-to-Frequency
Out
Converter
3
SO
S1
OE
Gnd
S3
S2
Out
V
DD
Cap (0.1µf)
6
4
3
1,2
5
LED
Pin Name
V
DD
OUT
S2
LED Anode
S3
GND/OE
Pin #
1, 2
3
4
5
6
7, 8
Description
Supply voltage
Output Frequency (F
O
)
Photodiode type selection input
LED input
Photodiode type selection input
Sensor & LED Ground
DO NOT LOOK DIRECTLY AT LED
WITH UNSHIELDED EYES OR
DAMAGE TO RETINA MAY OCCUR.
The
OPB780Z
includes 10” [25.4cm] a Flat Flexible
interface Cable. Custom lengths of the cable can be
ordered either from OPTEK or most Flat Flexible Cable
(FFC) manufactures. The FFC is designed to interface
with an any standard 0.5mm spacing FFC connector
similar to the AVX ELCO connector.
(part number 04 6249 0080 00 800+).
The output of the device is designed to drive a standard
TTL or CMOS logic input over short distances.
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.2
11/09
Page 1 of 9

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