
TRS1722, TRS1755, TRS1766
HIGH SENSITIVITY REFLECTIVE COLOR SENSOR
WITH LIGHTTOVOLTAGE CONVERTERS
TAOS034 – NOVEMBER 2002
4
Copyright 2002, TAOS Inc.
The LUMENOLOGY Company
www.taosinc.com
Electrical Characteristics at V
DD
= 5 V, T
A
= 25
°
C, R
L
= 10 k
(unless otherwise noted) (continued)
Coupled (see Note 2)
PARAMETER
TEST CONDITIONS
TRS1722
TYP
TRS1755
TYP
TRS1766
TYP
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
I
F
LED forward current
V
O
= 2 V,
d = 1 mm (Note 11)
0.5
2.1
4
2
5
8
0.1
0.4
1.75
mA
I
f
= 2.5 mA,
d = 1 mm (Note 11)
2.4
V
O
Output voltage
I
f
= 5 mA,
d = 1 mm (Note 11)
2
V
I
f
= 0.25 mA,
d = 1 mm (Note 11)
1.3
V
ox
Crosstalk
I
f
= 5 mA, no surface
(see Note 12)
0
80
300
0
30
200
mV
I
f
= 1 mA, no surface
(see Note 12)
0
130
500
NOTES: 11. Measured using Eastman Kodak neutral white test card having 90% diffuse reflectance located a distance from the front surface
of the reflective sensors. Reference: Eastman Kodak catalog number #1257795.
12. Crosstalk is the output voltage measured with the indicated current on the LED and with no reflecting surface. Ambient light is
excluded with a black box approximately 20 cm in each dimension.
Switching Characteristics at V
DD
= 5 V, T
A
= 25
°
C, R
L
= 10 k
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
μ
s
μ
s
μ
s
μ
Vrms
t
r
t
f
t
s
Output pulse rise time, 10% to 90% of final value
See Note 13 and Figure 1
160
250
Output pulse fall time, 10% to 90% of final value
See Note 13 and Figure 1
150
250
Output settling time to 1% of final value
See Note 13 and Figure 1
330
Integrated noise voltage
f = dc to 1 kHz
f = 10 Hz
E
e
= 0
E
e
= 0
E
e
= 0
E
e
= 0
200
6
V
Output noise voltage, rms
f = 100 Hz
6
V/
Hz rms
μ
√
n
g ,
f = 1 kHz
7
NOTE 13: Switching characteristics apply over the range V
O
= 0.1 V to 4.5 V.