t
t
TRS1722, TRS1755, TRS1766
HIGH SENSITIVITY REFLECTIVE COLOR SENSOR
WITH LIGHT TO VOLTAGE CONVERTERS
TAOS034 – NOVEMBER 2002
D
Converts Reflected Light Intensity to
D
D
Output Voltage
Integral Color LEDs and Matching Color
Filters on Sensors
Sensor is a Monolithic Silicon IC
Containing a Photodiode, Operational
Amplifier, Feedback Components, and
Color Filter
High-Output LEDs and High-Sensitivity
Sensors
PACKAGE
(TOP VIEW)
ANODE 1
4 OUT
GND 2
3 V
DD
D
D
Single Voltage Supply Operation
D
Surface-Mount Package
Description
The TRS1722, TRS1755, and TRS1766 are high-sensitivity reflective color sensors in red (630 nm), green
(567 nm), and blue (470 nm) — respectively — with light-to-voltage converters. Each device consists of a
colored LED light source, a photodiode light sensor with matching optical color filter, a transimpedance amplifier,
and on-board signal conditioning. Output voltage is directly proportional to the reflected light intensity on the
photodiode plus any ambient light (which may be considered noise).
Functional Block Diagram
LED
Anode
The
LUMENOLOGY
r
Company
t
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205
S
Plano, TX 75074
S
(972) 673-0759
t
www.taosinc.com
1
ÇÇÇÇ
ÇÇÇÇ
–
+
Voltage
Output
Copyright
E
2002, TAOS Inc.
External
Reflecting
Surface
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
