TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
1
The LUMENOLOGY r Company r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
DMonolithic Silicon IC Containing
Photodiode, Operational Amplifier, and
Feedback Components
DConverts Light Intensity to a Voltage
DIrradiance Responsivity, Typically
9 mV/(mW/cm2) at lp = 635 nm
DCompact 3-Lead Clear Plastic Package
DSingle Voltage Supply Operation
DLow Dark (Offset) Voltage....10 mV Max
DLow Supply Current......1.1 mA Typical
DWide Supply-Voltage Range.... 2.7 V to 5.5 V
DReplacement for TSL254
DRoHS Compliant (−LF Package Only)
Description
The TSL254R is a light-to-voltage optical sensor combining a photodiode and a transimpedance amplifier
(feedback resistor = 1 MΩ) on a single monolithic IC. Output voltage is directly proportional to the light intensity
(irradiance) on the photodiode. The device has improved amplifier offset-voltage stability and low power
consumption and is 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 TAPACKAGE − LEADS PACKAGE DESIGNATOR ORDERING NUMBER
TSL254R 0°C to 70°C3-lead Sidelooker S TSL254R
TSL254R 0°C to 70°C3-lead Sidelooker — Lead (Pb) Free S TSL254R−LF
TSL254R 0°C to 70°C3-lead Surface-Mount Sidelooker — Lead (Pb) Free SM TSL254RSM−LF
Terminal Functions
TERMINAL
DESCRIPTION
NAME NO. DESCRIPTION
GND 1 Ground (substrate). All voltages are referenced to GND.
OUT 3 Output voltage
VDD 2Supply voltage
r
r
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
PACKAGE S
SIDELOOKER
(FRONT VIEW)
1
GND
2
VDD
3
OUT
PACKAGE SM
SURFACE MOUNT
SIDELOOKER
(FRONT VIEW)
1
GND
2
VDD
3
OUT
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, VDD (see Note 1) 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, IO ±10 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duration of short-circuit current at (or below) 25°C (see Note 2) 5 s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA −25°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg −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 NOM MAX UNIT
Supply voltage, VDD 2.7 5.5 V
Operating free-air temperature, TA0 70 °C
Electrical Characteristics at VDD = 5 V, TA = 25°C, λp = 635 nm, RL = 10 kΩ (unless otherwise noted)
(see Notes 3, 4, and 5)
PARAMETER
TEST TSL254R
UNIT
PARAMETER
TEST
CONDITIONS MIN TYP MAX UNIT
VDDark voltage Ee = 0 0 5 10 mV
VOM Maximum output voltage VDD = 4.5 V 3.0 3.3 V
VOOutput voltage Ee = 222 μW/cm21.5 2 2.5 V
Temperature coefficient of output voltage (V )
V
O
= 2 V @ 25°C, 2 mV/°C
αvo Temperature coefficient of output voltage (VO)
VO = 2 V @ 25 C
,
TA = 0°C to 70°C (see Note 6) 0.1 %/°C
R
Irradiance responsivity
See Notes 5 and 7
9
mV/( W/cm2)
ReIrradiance responsivity See Notes 5 and 7 9 mV/(μW/cm2)
IDD Supply current Ee = 222 μW/cm21.1 1.7 mA
NOTES: 3. Measurements are made with RL = 10 kΩ between output and ground.
4. Optical measurements are made using small-angle incident radiation from an LED optical source.
5. The input irradiance Ee is supplied by an AlInGaP LED with peak wavelength λp = 635 nm
6. The temperature coefficient of output voltage measurement is made by adjusting irradiance such that VO is approximately 2 V at
25°C and then with irradiance held constant, measuring VO while varying the temperature between 0°C and 70°C.
7. Irradiance responsivity is characterized over the range VO = 0.05 to 2.9 V. The best-fit straight line of Output Voltage VO versus
irradiance Ee over this range will typically have a positive extrapolated VO value for Ee = 0.
Dynamic Characteristics at VDD = 5 V, TA = 25°C, λp = 635 nm, RL = 10 kΩ (see Figure 1)
PARAMETER
TSL254R
UNIT
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
trOutput pulse rise time VO(peak) = 2 V 2.5 μs
tfOutput pulse fall time VO(peak) = 2 V 2.5 μs
Ee = 0, VO = VDf = 1 kHz 1
V
Output noise voltage
Ee = 0, VO = VDf = 10 kHz 1
μV/√Hz
VnOutput noise voltage VO = 2 V f = 1 kHz 1.5 μV/
√
Hz
VO = 2 V f = 10 kHz 1.5
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
3
The LUMENOLOGY r Company r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORM
TEST CIRCUIT
Input
Ee
10%
90%
Output
(see Note B)
tr
TSL254R RL
VDD
2
1
3
+
−
Output
Pulse
Generator
LED
(see Note A) tf
90%
10%
NOTES: A. The input irradiance is supplied by a pulsed AlInGaP light-emitting diode with the following characteristics: λp = 635 nm,
tr < 1 μs, tf < 1 μs.
B. The output waveform is monitored on an oscilloscope with the following characteristics: tr < 100 ns, Zi ≥ 1 MΩ, Ci ≤ 20 pF.
Figure 1. Switching Times
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
4
r
r
Copyright E 2007, TAOS Inc. The LUMENOLOGY r Company
www.taosinc.com
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE
vs
IRRADIANCE
Figure 2
0.01
0.1
1
10
0.1 1 10 100 1000
Ee — Irradiance — mW/cm2
VDD = 5 V
λp = 635 nm
RL = 10 kW
TA = 25°C
Output Voltage (VO − VD) — V
Figure 3
300 400 500 600 700 1000800 900 1100
λ − Wavelength − nm
Relative Responsivity
0
0.2
0.4
0.6
0.8
1.0
1.2
PHOTODIODE SPECTRAL RESPONSIVITY
TA = 25°C
Figure 4
MAXIMUM OUTPUT VOLTAGE
vs
SUPPLY VOLTAGE
VDD − Supply Voltage − V
RL = 10 kΩ
TA = 25°C
0
1
2
3
4
5
2.5 3 3.5 4 4.5 5 5.5
VOM — Maximum Output Voltage — V
Figure 5
012 34
VO − Output Voltage − V
SUPPLY CURRENT
vs
OUTPUT VOLTAGE
VDD = 5 V
RL = 10 kW
TA = 25°C
IDD — Supply Current — mA
0.4
0.6
0.8
1
1.2
1.4
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
5
The LUMENOLOGY r Company r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
TYPICAL CHARACTERISTICS
θ − Angular Displacement
TSL254R
80°60°40°20°0°80°60°40°20°
Optical Axis
NORMALIZED OUTPUT VOLTAGE
vs
ANGULAR DISPLACEMENT
Figure 6
0
0.2
0.4
0.6
0.8
1
Normalized Output Voltage
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
6
r
r
Copyright E 2007, TAOS Inc. The LUMENOLOGY r Company
www.taosinc.com
APPLICATION INFORMATION
PCB Pad Layout
Suggested PCB pad layout guidelines for the SM surface mount package are shown in Figure 7.
3.2
1.0 1.0 1.0
1.01.0
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
Figure 7. Suggested SM Package PCB Layout
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
7
The LUMENOLOGY r Company r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
MECHANICAL INFORMATION
The device is supplied in a clear plastic three-lead package (S). The integrated photodiode active area is
typically 1,0 mm2 (0.0016 in2).
PACKAGE S PLASTIC SINGLE-IN-LINE SIDE-LOOKER PACKAGE
1.642.60
2.30
4.60
R 0.90
1.80
0.42
1
2y 2
0.47 TYP
TOP VIEW
SIDE VIEWFRONT VIEW
0.42
1.56
14.86 + 0.50
4.60
0.15
Note B
Lead Free
Available
Pb
NOTES: A. All linear dimensions are in millimeters; tolerance is ± 0.25 mm unless otherwise stated.
B. Dimension is to center of lens arc, which is located below the package face.
C. The integrated photodiode active area is typically located in the center of the lens and 0.97 mm below the top of the lens surface.
D. Index of refraction of clear plastic is 1.55.
E. Lead finish for TSL254R solder dipped, 63% Sn/37% Pb. Lead finish for TSL254R−LF: solder dipped, 100% Sn.
F. This drawing is subject to change without notice.
Figure 8. Package S — Single-In-Line Side-Looker Package Configuration
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
8
r
r
Copyright E 2007, TAOS Inc. The LUMENOLOGY r Company
www.taosinc.com
MECHANICAL DATA
PACKAGE SM PLASTIC SURFACE MOUNT SIDE-LOOKER PACKAGE
1.642.60
2.30
4.60
R 0.90
1.80
0.42
1.00
0.47 TYP
TOP VIEW
SIDE VIEWFRONT VIEW
0.42
5.73 + 0.50
4.60
0.15 Note B
2.59
0.62 + 0.10 1.97
0.62 +0.10
−0.15
Lead Free
Pb
2y 2
NOTES: A. All linear dimensions are in millimeters; tolerance is ± 0.25 mm unless otherwise stated.
B. Dimension is to center of lens arc, which is located below the package face.
C. The integrated photodiode active area is typically located in the center of the lens and 0.97 mm below the top of the lens surface.
D. Index of refraction of clear plastic is 1.55.
E. Lead finish for TSL254RSM−LF: solder dipped, 100% Sn.
F. This drawing is subject to change without notice.
Figure 9. Package SM — Surface Mount Side-Looker Package Configuration
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
9
The LUMENOLOGY r Company r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
PRODUCTION DATA — information in this document is current at publication date. Products conform to
specifications in accordance with the terms of Texas Advanced Optoelectronic Solutions, Inc. standard
warranty. Production processing does not necessarily include testing of all parameters.
LEAD-FREE (Pb-FREE) and GREEN STATEMENT
Pb-Free (RoHS) TAOS’ terms Lead-Free or Pb-Free mean semiconductor products that are compatible with the current
RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous
materials. Where designed to be soldered at high temperatures, TAOS Pb-Free products are suitable for use in specified
lead-free processes.
Green (RoHS & no Sb/Br) TAOS defines Green to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and
Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material).
Important Information and Disclaimer The information provided in this statement represents TAOS’ knowledge and
belief as of the date that it is provided. TAOS bases its knowledge and belief on information provided by third parties,
and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate
information from third parties. TAOS has taken and continues to take reasonable steps to provide representative
and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and
chemicals. TAOS and TAOS suppliers consider certain information to be proprietary, and thus CAS numbers and other
limited information may not be available for release.
NOTICE
Texas Advanced Optoelectronic Solutions, Inc. (TAOS) reserves the right to make changes to the products contained in this
document to improve performance or for any other purpose, or to discontinue them without notice. Customers are advised
to contact TAOS to obtain the latest product information before placing orders or designing TAOS products into systems.
TAOS assumes no responsibility for the use of any products or circuits described in this document or customer product
design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that
the circuits are free of patent infringement. TAOS further makes no claim as to the suitability of its products for any particular
purpose, nor does TAOS assume any liability arising out of the use of any product or circuit, and specifically disclaims any
and all liability, including without limitation consequential or incidental damages.
TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, INC. PRODUCTS ARE NOT DESIGNED OR INTENDED FOR
USE IN CRITICAL APPLICATIONS IN WHICH THE FAILURE OR MALFUNCTION OF THE TAOS PRODUCT MAY
RESULT IN PERSONAL INJURY OR DEATH. USE OF TAOS PRODUCTS IN LIFE SUPPORT SYSTEMS IS EXPRESSLY
UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER’S RISK.
LUMENOLOGY, TAOS, the TAOS logo, and Texas Advanced Optoelectronic Solutions are registered trademarks of Texas Advanced
Optoelectronic Solutions Incorporated.
TSL254R
LIGHT-TO-VOLTAGE OPTICAL SENSOR
TAOS071C − SEPTEMBER 2007
10
r
r
Copyright E 2007, TAOS Inc. The LUMENOLOGY r Company
www.taosinc.com