r
r
TSL12T, TSL13T
LIGHT-TO-VOLTAGE CONVERTERS
TAOS062D
−
APRIL 2007
D
Converts Light Intensity to Output Voltage
D
Monolithic Silicon IC Containing
D
D
Photodiode, Transconductance Amplifier,
and Feedback Components
Single-Supply Operation . . . 2.7 V to 5.5 V
High Irradiance Responsivity . . . Typical
96 mV/(μW/cm
2
) at
λ
p
= 640 nm (TSL12T)
Low Supply Current . . . 1.1 mA Typical
N/C 1
GND 2
PACKAGE T
4-LEAD SMD
(TOP VIEW)
4 OUT
3 V
DD
D
D
Low-Profile Surface-Mount Package
D
RoHS Compliant
Description
The TSL12T and TSL13T are cost-optimized, highly integrated light-to-voltage optical sensors, each combining
a photodiode and a transimpedance amplifier (feedback resistor = 80 MΩ and 20 MΩ, respectively) on a single
monolithic integrated circuit. The photodiode active area is 0.5 mm
×
0.5 mm and the sensors respond to light
in the range of 320 nm to 1050 nm. Output voltage is linear with light intensity (irradiance) incident on the sensor
over a wide dynamic range. These devices are supplied in a low-profile surface-mount package (T).
Functional Block Diagram
−
+
Voltage
Output
Available Options
DEVICE
TSL12
TSL13
T
A
0°C to 70°
0°C to 70°
PACKAGE
−
LEADS
4-lead Low-Profile Surface-Mount
4-lead Low-Profile Surface-Mount
PACKAGE DESIGNATOR
T
T
ORDERING NUMBER
TSL12T
TSL13T
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.
TSL12T, TSL13T
LIGHT-TO-VOLTAGE CONVERTERS
TAOS062D
−
APRIL 2007
Terminal Functions
TERMINAL
NAME
GND
OUT
V
DD
N/C
T PKG
NO.
2
4
3
1
Output voltage.
Supply voltage.
No connection.
DESCRIPTION
Power supply 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
Solder conditions in accordance with JEDEC J−STD−020A, maximum temperature . . . . . . . . . . . . . . . 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
Copyright
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2007, TAOS Inc.
r
r
The
LUMENOLOGY
r
Company
2
www.taosinc.com
TSL12T, TSL13T
LIGHT-TO-VOLTAGE CONVERTERS
TAOS062D
−
APRIL 2007
Electrical Characteristics at V
DD
= 5 V, T
A
= 25
°
C,
λ
p
= 640 nm, R
L
= 10 k
Ω
(unless otherwise noted)
(see Notes 3, 4, 5)
PARAMETER
V
OM
Maximum output voltage
E
e
=
20.5
μW/cm
2
V
O
Output voltage
E
e
= 83
μW/cm
2
E
e
=
41
μW/cm
2
E
e
= 166
μW/cm
2
R
e
V
OS
V
d
I
D
Irradiance responsivity
Extrapolated offset voltage
Dark voltage
Supply current
Note 6
Note 6
E
e
=
0
E
e
=
20.5
μW/cm
2
E
e
= 83
μW/cm
2
−0.02
0
1.1
96
0.03
0.08
0.08
1.7
1.1
1.7
−0.02
0
4
4
24
0.03
0.08
0.08
mV/
(μW/
cm
2
)
V
V
mA
TEST CONDITIONS
TSL12T
MIN
4.6
1.5
TYP
4.9
2
2.5
1.5
2
2.5
V
MAX
MIN
4.6
TSL13T
TYP
4.9
MAX
UNIT
V
NOTES: 3.
4.
5.
6.
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 640 nm input irradiance E
e
is supplied by an AlInGaP LED with peak wavelength
λ
p
= 640 nm.
Irradiance responsivity is characterized over the range V
O
= 0.2 to 4 V. The best-fit straight line of Output Voltage V
O
versus
irradiance E
e
over this range may have a positive or negative extrapolated V
O
value for E
e
= 0. For low irradiance values, the output
voltage V
O
versus irradiance E
e
characteristic is non linear with a deviation toward V
O
= 0, E
e
= 0 origin from the best-fit straight
line referenced above.
Dynamic Characteristics at V
DD
= 5 V, T
A
= 25
°
C,
λ
p
= 640 nm, R
L
= 10 kΩ (unless otherwise noted)
(see Figure 1)
PARAMETER
t
dr
t
r
t
df
t
f
Output pulse delay time for rising edge (0%
to 10%)
Output pulse rise time (10% to 90%)
Output pulse delay time for falling edge
(100% to 90%)
Output pulse fall time (90% to 10%)
TEST CONDITIONS
Min V
O
= 0 V; Peak V
O
= 2 V
Min V
O
= 0.5 V; Peak V
O
= 2 V
Min V
O
= 0 V; Peak V
O
= 2 V
Min V
O
= 0.5 V; Peak V
O
= 2 V
Min V
O
= 0 V; Peak V
O
= 2 V
Min V
O
= 0.5 V; Peak V
O
= 2 V
Min V
O
= 0 V; Peak V
O
= 2 V
Min V
O
= 0.5 V; Peak V
O
= 2 V
TSL12T
MIN
TYP
13
2.3
20
10
2.3
2.2
10
9
MAX
MIN
TSL13T
TYP
1.7
1.2
7.2
6.5
1.2
1.1
6.8
6.4
MAX
UNIT
μs
s
μs
s
μs
s
μs
s
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LUMENOLOGY
r
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2007, TAOS Inc.
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3
TSL12T, TSL13T
LIGHT-TO-VOLTAGE CONVERTERS
TAOS062D
−
APRIL 2007
PARAMETER MEASUREMENT INFORMATION
V
DD
Pulse
Generator
LED
(see Note A)
TSL1x
2
TEST CIRCUIT
−
+
R
L
Output
Min V
O
3
Input
Min E
e
4
Peak V
O
t
dr
t
r
90%
10%
90%
10%
t
df
t
f
Peak E
e
OUTPUT VOLTAGE WAVEFORM (See Note B)
NOTES: A. The input irradiance is supplied by a pulsed AlInGaP light-emitting diode with the following characteristics:
λ
p
= 640 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
PHOTODIODE SPECTRAL RESPONSIVITY
1
0.8
Relative Responsivity
0.6
0.4
0.2
0
300
400
500
600 700 800 900
λ
−
Wavelength
−
nm
1000 1100
Figure 2
Copyright
E
2007, TAOS Inc.
r
r
The
LUMENOLOGY
r
Company
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TSL12T, TSL13T
LIGHT-TO-VOLTAGE CONVERTERS
TAOS062D
−
APRIL 2007
TYPICAL CHARACTERISTICS
TSL12T
RISING EDGE DYNAMIC CHARACTERISTICS
vs.
PEAK OUTPUT VOLTAGE
1000
Min V
O
= 0 V
1000
RISING EDGE DYNAMIC CHARACTERISTICS
vs.
PEAK OUTPUT VOLTAGE
Min V
O
= 0.5 V
100
Time —
ms
t
r
Time —
ms
100
10
t
dr
10
t
r
1
0
0.5
1
1.5
2
2.5
3
3.5
4
V
O
−
Peak Output Voltage
−
V
1
0
0.5
1
1.5
t
dr
2
2.5
3
3.5
4
V
O
−
Peak Output Voltage
−
V
Figure 3
FALLING EDGE DYNAMIC CHARACTERISTICS
vs.
PEAK OUTPUT VOLTAGE
1000
Min V
O
= 0 V
1000
Figure 4
FALLING EDGE DYNAMIC CHARACTERISTICS
vs.
PEAK OUTPUT VOLTAGE
Min V
O
= 0.5 V
100
Time —
ms
Time —
ms
100
t
f
10
10
t
f
t
df
1
0
0.5
1
1.5
2
2.5
3
3.5
4
V
O
−
Peak Output Voltage
−
V
1
0
0.5
1
1.5
t
df
2
2.5
3
3.5
4
V
O
−
Peak Output Voltage
−
V
Figure 5
Figure 6
The
LUMENOLOGY
r
Company
r
r
Copyright
E
2007, TAOS Inc.
www.taosinc.com
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