TSL250R, TSL251R, TSL252R
LIGHT-TO-VOLTAGE OPTICAL SENSORS
TAOS028H
−
SEPTEMBER 2007
PARAMETER MEASUREMENT INFORMATION
V
DD
Pulse
Generator
LED
(see Note A)
TSL25xR
1
TEST CIRCUIT
−
+
R
L
Output
(see Note B)
10%
2
E
e
Input
3
Output
t
r
90%
90%
10%
t
f
VOLTAGE WAVEFORM
NOTES: A. The input irradiance is supplied by a pulsed AlInGaP light-emitting diode with the following characteristics:
λ
p
= 635 nm,
t
r
< 1
μs,
t
f
< 1
μs.
B. The output waveform is monitored on an oscilloscope with the following characteristics: t
r
< 100 ns, Z
i
≥
1 MΩ, C
i
≤
20 pF.
Figure 1. Switching Times
TYPICAL CHARACTERISTICS
NORMALIZED OUTPUT VOLTAGE
vs
ANGULAR DISPLACEMENT
1
0.8
VO
−
Normalized Output Voltage
TSL251R
0.6
TSL252R
TSL250R
0.4
0.2
0
80°
60°
40° 20°
0°
20° 40°
θ
−
Angular Displacement
Optical Axis
60°
80°
Figure 2
Copyright
E
2007, TAOS Inc.
r
r
The
LUMENOLOGY
r
Company
4
www.taosinc.com
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
