TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C SEPTEMBER 2007
2
r
r
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
www.taosinc.com
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
DD
(see Note 1)
6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, I
O
?0 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duration of short-circuit current at (or below) 25癈 (see Note 2)
5 s
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
25癈 to 85癈
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
25癈 to 85癈
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds (S Package)
260癈
. . . . . . . . . . . . . . . . . . . .
Reflow solder, in accordance with J-STD-020C or J-STD-020D (SM Package)
260癈
. . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltages are with respect to GND.
2. Output may be shorted to supply.
Recommended Operating Conditions
MIN
NOM
MAX
UNIT
Supply voltage, V
DD
2.7
5.5
V
Operating free-air temperature, T
A
0
70
癈
Electrical Characteristics at V
DD
= 5 V, T
A
= 25?/SPAN>C, ?/SPAN>p = 635 nm, R
L
= 10 k?/SPAN> (unless otherwise noted)
(see Notes 3, 4, and 5)
TEST
TSL254R
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
V
D
Dark voltage
E
e
= 0
0
5
10
mV
V
OM
Maximum output voltage
V
DD
= 4.5 V
3.0
3.3
V
V
O
Output voltage
E
e
= 222 糤/cm
2
1.5
2
2.5
V
V = 2 V @ 25癈,
2
mV/癈
?/DIV>
vo
Temperature coefficient of output voltage (V
O
)
O
=
,
T
A
= 0癈 to 70癈 (see Note 6)
0.1
%/癈
R
e
Irradiance responsivity
See Notes 5 and 7
9
mV/(糤/cm
2
)
I
DD
Supply current
E
e
= 222 糤/cm
2
1.1
1.7
mA
NOTES: 3. Measurements are made with R
L
= 10 k?between output and ground.
4. Optical measurements are made using small-angle incident radiation from an LED optical source.
5. The input irradiance E
e
is supplied by an AlInGaP LED with peak wavelength ?/DIV>
p
= 635 nm
6. The temperature coefficient of output voltage measurement is made by adjusting irradiance such that V
O
is approximately 2 V at
25癈 and then with irradiance held constant, measuring V
O
while varying the temperature between 0癈 and 70癈.
7. Irradiance responsivity is characterized over the range V
O
= 0.05 to 2.9 V. The best-fit straight line of Output Voltage V
O
versus
irradiance E
e
over this range will typically have a positive extrapolated V
O
value for E
e
= 0.
Dynamic Characteristics at V
DD
= 5 V, T
A
= 25?/SPAN>C, ?/SPAN>p = 635 nm, R
L
= 10 k?/SPAN> (see Figure 1)
TSL254R
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
t
r
Output pulse rise time
V
O(peak)
= 2 V
2.5
約
t
f
Output pulse fall time
V
O(peak)
= 2 V
2.5
約
E
e
= 0, V
O
= V
D
f = 1 kHz
1
E
e
= 0, V
O
= V
D
f = 10 kHz
1
V
n
Output noise voltage
V
O
= 2 V
f = 1 kHz
1.5
糣/Hz
V
O
= 2 V
f = 10 kHz
1.5
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