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PDF TRS1766 Data sheet ( Hoja de datos )
| Número de pieza | TRS1766 | |
| Descripción | HIGH SENSITIVITY REFLECTIVE COLOR SENSOR | |
| Fabricantes | TAOS | |
| Logotipo |  |
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t TRS1722, TRS1755, TRS1766
HIGH SENSITIVITY REFLECTIVE COLOR SENSOR
t WITH LIGHTĆTOĆVOLTAGE CONVERTERS
TAOS034 – NOVEMBER 2002
D Converts Reflected Light Intensity to
Output Voltage
D Integral Color LEDs and Matching Color
Filters on Sensors
D Sensor is a Monolithic Silicon IC
Containing a Photodiode, Operational
Amplifier, Feedback Components, and
Color Filter
D High-Output LEDs and High-Sensitivity
Sensors
D Single Voltage Supply Operation
D Surface-Mount Package
ANODE 1
GND 2
PACKAGE
(TOP VIEW)
4 OUT
3 VDD
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
External
ÇÇÇÇÇÇÇÇReflecting
Surface
–
+
Voltage
Output
The LUMENOLOGYr Company
t
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205 S Plano, TX 75074 S (972t) 673-0759
www.taosinc.com
Copyright E 2002, TAOS Inc.
1
1 page  
TRS1722, TRS1755, TRS1766
HIGH SENSITIVITY REFLECTIVE COLOR SENSOR
WITH LIGHTĆTOĆVOLTAGE CONVERTERS
TAOS034 – NOVEMBER 2002
PARAMETER MEASUREMENT INFORMATION
ÇÇÇÇWhite Test Card
1 mm
1
LED
Input
Pulse
Generator
2
TEST CIRCUIT
–
+
3
VDD
4 Output
RL
Output
(see Note B)
tr
90%
90%
10%
10%
VOLTAGE WAVEFORM
tf
NOTES: A. The input irradiance is supplied by pulsing the LED with a white test card positioned 1 mm from the face of the device.
B. The output waveform is monitored on an oscilloscope with the following characteristics: tr < 100 ns, Zi ≥ 1 MΩ, Ci ≤ 20 pF.
C. The pulse generator output drive is adjusted until the sensor output voltage reaches 2 volts.
Figure 1. Switching Times
TYPICAL CHARACTERISTICS
DETECTOR SPECTRAL RESPONSIVITY
1
0.9 TRS1722
Normalized to
TRS1722
@ 670 nm
0.8
TRS1755
0.7
TA = 25°C
0.6
TRS1766
0.5
0.4
0.3
0.2
0.1
0
300 500 700 900 1100
λ – Wavelength – nm
Figure 2
DARK VOLTAGE
vs
FREE-AIR TEMPERATURE
10
VDD = 5 V
9
8
7
6
5
4
3
2
1
0
0 10 20 30 40 50 60
TA – Free-Air Temperature – °C
Figure 3
70
The LUMENOLOGYr Company
t
www.taosinc.com
t
Copyright E 2002, TAOS Inc.
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet TRS1766.PDF ] | |
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