TSL253R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS053 - JULY 2003
1
The
LUMENOLOGY
r
Company
r
r
Copyright
E
2003, TAOS Inc.
www.taosinc.com
D
Monolithic Silicon IC Containing
Photodiode, Operational Amplifier, and
Feedback Components
D
Converts Light Intensity to a Voltage
D
High Irradiance Responsivity, Typically 137
mV/(
m
W/cm
2
) at
l
p
= 635 nm (TSL253R)
D
Compact 3-Lead Clear Plastic Package
D
Single Voltage Supply Operation
D
Low Dark (Offset) Voltage....10 mV Max
D
Low Supply Current......1.1 mA Typical
D
Wide Supply-Voltage Range.... 2.7 V to 5.5 V
D
Replacement for TSL253
Description
The TSL253R is a light-to-voltage optical sensor combining a photodiode and a transimpedance amplifier
(feedback resistor = 16 M
) 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.
Functional Block Diagram
Voltage
Output
+
-
Terminal Functions
TERMINAL
DESCRIPTION
NAME
NO.
DESCRIPTION
GND
1
Ground (substrate). All voltages are referenced to GND.
OUT
3
Output voltage
V
DD
2
Supply voltage
r
r
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205
S
Plano, TX 75074
S
(972) 673-0759
3
2
1
OUT
V
DD
GND
PACKAGE
(FRONT VIEW)
TSL253R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS053 - JULY 2003
2
r
r
Copyright
E
2003, 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
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
240
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
NOM
MAX
UNIT
Supply voltage, V
DD
2.7
5.5
V
Operating free-air temperature, T
A
0
70
C
Electrical Characteristics at V
DD
= 5 V, T
A
= 25
C,
p = 635 nm, R
L
= 10 k
(unless otherwise noted)
(see Notes 3, 4, and 5)
PARAMETER
TEST
TSL253R
UNIT
PARAMETER
TEST
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
= 14.6
W/cm
2
1.5
2
2.5
V
Temperature coefficient of output voltage (V )
V
O
= 2 V @ 25
C,
2
mV/
C
vo
Temperature coefficient of output voltage (V
O
)
V
O
= 2 V @ 25 C,
T
A
= 0
C to 70
C (see Note 6)
0.1
%/
C
R
Irradiance responsivity
See Notes 5 and 7
137
mV/( W/cm
2
)
R
e
Irradiance responsivity
See Notes 5 and 7
137
mV/(
W/cm
2
)
I
DD
Supply current
E
e
= 14.6
W/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 Al
I
nGaP LED with peak wavelength
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
C and then with irradiance held constant, measuring V
O
while varying the temperature between 0
C and 70
C.
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
C,
p = 635 nm, R
L
= 10 k
(see Figure 1)
PARAMETER
TEST CONDITIONS
TSL253R
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
t
r
Output pulse rise time
V
O(peak)
= 2 V
7
s
t
f
Output pulse fall time
V
O(peak)
= 2 V
7
s
E
e
= 0, V
O
= V
D
f = 1 kHz
1
V
Output noise voltage
E
e
= 0, V
O
= V
D
f = 10 kHz
3
V/
Hz
V
n
Output noise voltage
V
O
= 2 V
f = 1 kHz
4
V/
Hz
V
O
= 2 V
f = 10 kHz
5
TSL253R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS053 - JULY 2003
3
The
LUMENOLOGY
r
Company
r
r
Copyright
E
2003, TAOS Inc.
www.taosinc.com
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORM
TEST CIRCUIT
Input
E
e
10%
90%
Output
(see Note B)
t
r
TSL253R
R
L
V
DD
2
1
3
+
-
Output
Pulse
Generator
LED
(see Note A)
t
f
90%
10%
NOTES: A. The input irradiance is supplied by a pulsed Al
I
nGaP light-emitting diode with the following characteristics:
p
= 635 nm,
t
r
< 1
s, t
f
< 1
s.
B. The output waveform is monitored on an oscilloscope with the following characteristics: t
r
< 100 ns, Z
i
1 M
, C
i
20 pF.
Figure 1. Switching Times
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