r
r
TSL250R, TSL251R, TSL252R
LIGHT-TO-VOLTAGE OPTICAL SENSORS
TAOS028H
−
SEPTEMBER 2007
D
Monolithic Silicon IC Containing
D
D
D
D
D
D
D
D
D
Photodiode, Operational Amplifier, and
Feedback Components
Converts Light Intensity to a Voltage
High Irradiance Responsivity, Typically
137 mV/(mW/cm
2
) at
l
p
= 635 nm (TSL250R)
Compact 3-Lead Clear Plastic Package
Single Voltage Supply Operation
Low Dark (Offset) Voltage....10 mV Max
Low Supply Current......1.1 mA Typical
Wide Supply-Voltage Range.... 2.7 V to 5.5 V
Replacements for TSL250, TSL251, and
TSL252
RoHS Compliant (−LF Package Only)
PACKAGE S
SIDELOOKER
(FRONT VIEW)
PACKAGE SM
SURFACE MOUNT
SIDELOOKER
(FRONT VIEW)
1
GND
2
V
DD
3
OUT
Description
1
GND
2
V
DD
3
OUT
The TSL250R, TSL251R, and TSL252R are light-to-voltage optical sensors, each combining a photodiode and
a transimpedance amplifier (feedback resistor = 16 MΩ, 8 MΩ, and 2.8 MΩ respectively) on a single monolithic
IC. Output voltage is directly proportional to the light intensity (irradiance) on the photodiode. These devices
have improved amplifier offset-voltage stability and low power consumption and are supplied in a 3-lead clear
plastic sidelooker package with an integral lens. When supplied in the lead (Pb) free package, the device is
RoHS compliant.
Functional Block Diagram
−
+
Voltage
Output
Available Options
DEVICE
TSL250R
TSL250R
TSL250R
TSL251R
TSL251R
TSL251R
TSL252R
TSL252R
TSL252R
T
A
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
PACKAGE
−
LEADS
3-lead Sidelooker
3-lead Sidelooker — Lead (Pb) Free
3-lead Surface-Mount Sidelooker — Lead (Pb) Free
3-lead Sidelooker
3-lead Sidelooker — Lead (Pb) Free
3-lead Surface-Mount Sidelooker — Lead (Pb) Free
3-lead Sidelooker
3-lead Sidelooker — Lead (Pb) Free
3-lead Surface-Mount Sidelooker — Lead (Pb) Free
PACKAGE DESIGNATOR
S
S
SM
S
S
SM
S
S
SM
ORDERING NUMBER
TSL250R
TSL250R−LF
TSL250RSM−LF
TSL251R
TSL251R−LF
TSL251RSM−LF
TSL252R
TSL252R−LF
TSL252RSM−LF
The
LUMENOLOGY
r
Company
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road
S
Suite 300
S
Plano, TX 75074
S
(972) 673-0759
r
www.taosinc.com
1
r
Copyright
E
2007, TAOS Inc.
TSL250R, TSL251R, TSL252R
LIGHT-TO-VOLTAGE OPTICAL SENSORS
TAOS028H
−
SEPTEMBER 2007
Terminal Functions
TERMINAL
NAME
GND
OUT
V
DD
NO.
1
3
2
Output voltage
Supply voltage
DESCRIPTION
Ground (substrate). All voltages are referenced to GND.
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
10 mA
Duration of short-circuit current at (or below) 25°C (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 s
Operating free-air temperature range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−25°C
to 85°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−25°C
to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds (S Package) . . . . . . . . . . . . . . . . . . . . 260°C
Reflow solder, in accordance with J-STD-020C or J-STD-020D (SM Package) . . . . . . . . . . . . . . . . . . . 260°C
†
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
Supply voltage, V
DD
Operating free-air temperature, T
A
2.7
0
NOM
MAX
5.5
70
UNIT
V
°C
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r
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LUMENOLOGY
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TSL250R, TSL251R, TSL252R
LIGHT-TO-VOLTAGE OPTICAL SENSORS
TAOS028H
−
SEPTEMBER 2007
Electrical Characteristics at V
DD
= 5 V, T
A
= 25
°
C,
λ
p = 635 nm, R
L
= 10 k
Ω
(unless otherwise noted)
(see Notes 3, 4, and 5)
PARAMETER
V
D
V
OM
Dark voltage
Maximum output
voltage
Output voltage
TEST
CONDITIONS
E
e
= 0
V
DD
= 4.5 V
E
e
= 14.6
μW/cm
2
V
O
E
e
= 38.5
μW/cm
2
E
e
= 196
μW/cm
2
1.6
0.08
1.6
0.08
1.6
0.08
137
127
1.1
1.7
1.1
1.7
1.1
1.7
mA
52
48
10.2
mV/(μW/cm
mV/( W/cm
2
)
9.4
E
e
= 14.6
μW/cm
2
,
T
A
= 0°C to 70°C
E
e
= 38.5
μW/cm
2
,
T
A
= 0°C to 70°C
E
e
= 196
μW/cm
2
,
T
A
= 0°C to 70°C
λ
p
= 635 nm,
See Notes 5 and 7
λ
p
= 880 nm,
See Notes 6 and 7
E
e
= 14.6
μW/cm
2
I
DD
Supply current
pp y
E
e
= 38.5
E
e
= 196
NOTES: 3.
4.
5.
6.
7.
μW/cm
2
μW/cm
2
TSL250R
MIN
0
3.0
1.5
TYP
4
3.3
2
2.5
1.5
2
2.5
1.5
2
2.5
mV/°C
%/°C
mV/°C
%/°C
mV/°C
%/°C
V
MAX
10
MIN
0
3.0
TSL251R
TYP
4
3.3
MAX
10
MIN
0
3.0
TSL252R
TYP
4
3.3
MAX
10
UNIT
mV
V
α
vo
Temperature
coefficient of
output voltage
p
g
(V
O
)
N
e
Irradiance
responsivity
Measurements are made with R
L
= 10 kΩ between output and ground.
Optical measurements are made using small-angle incident radiation from an LED optical source.
The input irradiance E
e
is supplied by an AlInGaP LED with peak wavelength
λ
p
= 635 nm
The input irradiance E
e
is supplied by a GaAlAs LED with peak wavelength
λ
p
= 880 nm
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 T
A
= 25
°
C (see Figure 1)
PARAMETER
t
r
t
f
V
n
Output pulse rise time
Output pulse fall time
Output noise voltage
TEST CONDITIONS
V
DD
= 5 V,
V
DD
= 5 V,
V
DD
= 5 V,
f = 1000 Hz
λ
p
= 635 nm
λ
p
= 635 nm
E
e
= 0,
TSL250R
MIN
TYP
260
260
0.8
MAX
MIN
TSL251R
TYP
70
70
0.7
MAX
MIN
TSL252R
TYP
7
7
0.6
MAX
UNIT
μs
μs
μV/√Hz
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2007, TAOS Inc.
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3
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
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E
2007, TAOS Inc.
r
r
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LUMENOLOGY
r
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TSL250R, TSL251R, TSL252R
LIGHT-TO-VOLTAGE OPTICAL SENSORS
TAOS028H
−
SEPTEMBER 2007
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE
vs
IRRADIANCE
10 V = 5 V
DD
λ
p
= 635 nm
R
L
= 10 kW
T
A
= 25°C
VO
−
Output Voltage
−
V
1
1.2
TSL251R
1.0
Relative Responsivity
PHOTODIODE SPECTRAL RESPONSIVITY
T
A
= 25°C
0.8
0.6
0.1
TSL250R
TSL252R
0.4
0.2
0.01
0.1
1
10
E
e
−
Irradiance
−
μW/cm
2
100
0
300
400
500
600 700 800 900
λ
−
Wavelength
−
nm
1000 1100
Figure 3
MAXIMUM OUTPUT VOLTAGE
vs
SUPPLY VOLTAGE
5
VOM
−
Maximum Output Voltage
−
V
R
L
= 10 kΩ
T
A
= 25°C
I DD
−
Supply Current
−
mA
1.6
V
DD
= 5 V
R
L
= 10 kW
T
A
= 25°C
Figure 4
SUPPLY CURRENT
vs
OUTPUT VOLTAGE
4
1.4
3
1.2
2
1
1
0.8
0
2.5
3
3.5
4
4.5
V
DD
−
Supply Voltage
−
V
5
5.5
0.6
0
1
2
3
V
O
−
Output Voltage
−
V
4
Figure 5
Figure 6
The
LUMENOLOGY
r
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Copyright
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2007, TAOS Inc.
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