TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
1
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DThree-Channel RGB Color Sensor
DConverts Light Intensity to Voltage
DSingle-Voltage Supply Operation —
4.5 V to 5.5 V
DRail-to-Rail Output
DProgrammable gain settings:
− TCS3103 (2, 4)
− TCS3104 (4, 1)
DLow Supply Current — 270 mA Typical
DFast Response Time —
Rise Time = 12 ms Typical
DLow Dark Offset
Description
The TCS3103 and TCS3104 RGB Light-to-Voltage Converters combine three photodiodes with optical filters,
amplifiers, and gain-switching circuitry on a single chip. The output of each channel is a voltage that is linearly
proportional to light intensity (irradiance) on the corresponding photodiode element. Gain is switchable via a
digital input pin from 1× to 4× on the TCS3104, and from 2× to 4× on the TCS3103 (as compared to 1× of
TCS3104).
Each channel on the device consists of a photodiode with a red, green, or blue optical filter, a current-to-voltage
converter, and gain control elements. The voltage from each of the red, green, and blue channels is output on
the VOR, VOG, and VOB pins, respectively. The single MFP pin controls the gain for all three channels. Each of
the three photodiode channels is split into three elements, which are dispersed in a 3 ×3 array. This makes the
device less sensitive to non-uniform illumination across the sensing area. The overall photodiode active area
is 378 μm × 378 μm. Each channel is factory-trimmed for low dark offset voltage and uniform sensitivity from
device-to-device.
The TCS3103 and TCS3104 are intended for use in a variety of applications including color-point feedback
control in solid-state illumination and backlight systems, color adjustment in printers, process controls,
diagnostic systems, paper and product handling, toys, and games.
Functional Block Diagram
VDD = 4.5 V to 5.5 V
VOR
Red
Channel
Current-to-Voltage
Converter
MFP
Green
Channel
Blue
Channel
VOG
VOB
Control
r
r
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
6 VOR
5 VOG
4 VOB
VDD 1
GND 2
MFP 3
PACKAGE FN
DUAL FLAT NO-LEAD
(TOP VIEW)
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
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Detailed Description
The TCS3103 and TCS3104 devices output a voltage that is linearly proportional to light intensity in the spectral
range of interest on each of the three sensor channels. Figure 2 shows how each sensor responds to light of
various wavelengths. The peak response of each of the three channels roughly corresponds to blue, green, and
red portions of the visible light spectrum. Thus, when light impinges upon the three elements, each element
gives an output that corresponds to the blue, green, and red components of the light. By measuring the
amplitude and ratios of the three channels, information about the color of the light can be obtained.
Each channel responds linearly to light intensity from a range of near zero light to a maximum value that is
determined by the gain and the supply voltage of the device. The output of the device can swing from near
ground level to near the supply voltage of the device. The dark voltage, or output of the device with no light input,
is determined by internal amplifier offsets and is factory-trimmed to be a minimum value. If very accurate,
low-level light measurement is required, the dark voltage value for each channel can be measured and
subtracted from subsequent light readings to obtain a more accurate light measurement.
The Multifunction Pin (MFP) on each device can be used for selecting gain mode (Table 1).
Table 1. Device Programming Option
Device Mode Details
TCS3103 GSM (Gain Select Mode) 2× (MFP = 0) or 4× (MFP = 1)
TCS3104 GSM (Gain Select Mode) 4× (MFP = 0) or 1× (MFP = 1)
Terminal Functions
TERMINAL
TYPE
DESCRIPTION
NAME NO. TYPE DESCRIPTION
GND 2 Power Power supply ground. All voltages are referenced to GND.
MFP 3 I Multi-function logic input.
VDD 1 Power Supply voltage.
VOB 4 O Blue channel voltage output.
VOG 5 O Green channel voltage output.
VOR 6 O Red channel voltage output.
Available Options
DEVICE Gain PACKAGE − LEADS PACKAGE DESIGNATOR ORDERING NUMBER
TCS3103 2×, 4×Dual Flat No-Lead − 6 FN TCS3103FN
TCS3104 4×,1×Dual Flat No-Lead − 6 FN TCS3104FN
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VDD (see Note 1) 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg −40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ESD tolerance, human body model 2000 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moisture sensitivity level 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
NOTE 1: All voltages are with respect to GND.
Recommended Operating Conditions
MIN NOM MAX UNIT
Supply voltage, VDD 4.5 5 5.5 V
Operating free-air temperature, TA−30 70 °C
Input low voltage on MFP pin, VIL VDD = 5 V −0.5 1.5 V
Input high voltage on MFP pin, VIH VDD = 5 V 3.5 5.5 V
Load capacitance, CLVDD = 5 V 100 pF
Electrical Characteristics VDD = 5 V, TA = 25C, RL = 10 kW (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VDDark voltage, VOR, VOG, VOB Ee = 0 0 10 mV
VOM Maximum output voltage VDD = 5 V 4.8 V
IDD Supply current VDD = 5 V, Ee = 0 270 500 μA
λp = 470 nm, Gain select = 1×0.02
V/
ReR Irradiance responsivity, VOR λp = 524 nm, Gain select = 1×0.09 mV/
(μW/cm
2
)
ReR
Irradiance
responsivity,
VOR
λp = 640 nm, Gain select = 1×0.3 0.4 0.5
(
μ
W/
cm
2)
λp = 470 nm, Gain select = 1×0.13
V/
ReG Irradiance responsivity, VOG λp = 524 nm, Gain select = 1×0.18 0.25 0.31 mV/
(μW/cm
2
)
ReG
Irradiance
responsivity,
VOG
λp = 640 nm, Gain select = 1×0.06
(
μ
W/
cm
2)
λp = 470 nm, Gain select = 1×0.15 0.2 0.25
V/
ReB Irradiance responsivity, VOB λp = 524 nm, Gain select = 1×0.13 mV/
(μW/cm
2
)
ReB
Irradiance
responsivity,
VOB
λp = 640 nm, Gain select = 1×0.12
(
μ
W/
cm
2)
Gain scaling, 1× to 2×1.9 2 2.1
Gain scaling, 1× to 4×3.8 4 4.2
TcTemperature coefficient of output voltage λp ≤ 700 nm, −30°C ≤ TA ≤70°C± 360 ppm/°C
Dynamic Characteristics, VDD = 5 V, TA = 25C, RL = 10 kW (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Gain select = 1×12 μs
trOutput pulse rise time, 10% to 90% of final value Gain select = 2×24 μs
tr
Output
pulse
rise
time,
10%
to
90%
of
final
value
Gain select = 4×40 μs
Gain select = 1×15 μs
tfOutput pulse fall time, 90% to 10% of final value Gain select = 2×28 μs
tf
Output
pulse
fall
time,
90%
to
10%
of
final
value
Gain select = 4×44 μs
Integrated noise voltage f = DC to 1 kHz, Ee = 0 200 μVrms
tPZX Propagation delay, output active VDD ramp 0 V to 5 V 50 ms
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
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PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORM
TEST CIRCUIT
Input
Ee
10%
90%
Output
(see Note B)
tr
1/3 TCS310x RL
VDD
13
+
−
VOX
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 = 640 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.
2
CL
MFP
Figure 1. Switching Times
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
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TYPICAL CHARACTERISTICS
Figure 2
PHOTODIODE SPECTRAL RESPONSIVITY
λ − Wavelength − nm
400 500 600 700 800 900 1000 1100300
0
0.2
0.4
0.6
0.8
1
Relative Responsivity
TA = 25°C
Normalized to
Red @ 750 nm
Red
Blue
Green
Figure 3
NORMALIZED OUTPUT FREQUENCY
vs.
ANGULAR DISPLACEMENT
Q − Angular Displacement − °
fO — Output Frequency — Normalized
0
0.2
0.4
0.6
0.8
1
−90 −60 −30 0 30 60 90
Optical Axis
Angular Displacement is
Equal for Both Aspects
Figure 4
VDARK vs. TEMPERATURE
Dark Voltage — mV
0 25 50 75 100
0
0.2
0.4
0.6
0.8
1
1.2
TA − Free-Air Temperature − °C
Gain = 1
Figure 5
IDD vs. TEMPERATURE
IDD — mA
25 50 750
250
260
280
300
320
330
270
290
310
100
TA − Free-Air Temperature − °C
Ee = 0
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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APPLICATION INFORMATION
Power Supply Considerations
The power supply lines (VDD and GND) should be bypassed by placing an 0.1-μF capacitor with low ESR and
short leads (ideally, a surface mount ceramic type) as close as possible to the device package.
Output Interface
Although the output of the device can be connected to a comparator for simple threshold measurements, or to
another amplifier stage, most applications will require that the three channels be connected to analog-to-digital
converters (ADCs) so that the light and color information can be processed by a microcontroller, computer, or
other device. In many cases, the outputs can be directly connected to the ADC inputs. In some cases, for
example if the light is modulated, it may be desirable to insert active or passive low-pass filters on the channels
prior to the ADC, to smooth out the modulation ripple that would otherwise result in noisy measurements. The
cutoff frequency of the filters would, of course, depend upon the modulation frequency of the incoming light. With
a pulse-width modulated (PWM) input light signal, it may be possible to synchronize the ADC sampling with the
on-time of the PWM signal. In this case, a low-pass filter would not be required because the device output would
be sampled only during the on time of the input light source. A recommendation for minimum pulse width
would be 3 × the rise time of the device under the chosen gain setting.
Device Power Up
The TCS310x should use the following power up sequence: A stable ground reference from the system should
be applied first, followed by the VDD power applied second. This means VDD cannot be applied while the GND
pin is floating or without a ground reference. Afterward, the MFP pin may be biased or driven. The MFP pin must
always have a valid logic reference level. The pin may be biased or driven to a logical high or logical low level.
PCB Pad Layout
Suggested PCB pad layout guidelines for the Dual Flat No-Lead (FN) surface mount package are shown in
Figure 6.
0.40
2.90
0.40
1.30
1.70
0.65
1.30
0.65
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
Figure 6. Suggested FN Package PCB Layout
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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MECHANICAL DATA
PACKAGE FN Dual Flat No-Lead
203 8
6 VOR
5 VOG
4 VOB
VDD 1
GND 2
MFP 3
TOP VIEW
SIDE VIEW
BOTTOM VIEW
Lead Free
Pb
300
50
650
2000
75
2000 75
PIN 1
PIN 1
END VIEW
650 100
Seating Plane
PIN OUT
TOP VIEW
Photo-Active Area
750 150
203
150
NOTES: A. All linear dimensions are in micrometers. Dimension tolerance is ± 20 μm unless otherwise noted.
B. The photo-active area is 378 μm by 378 μm, centered vertically and horizontally with a ± 75 μm tolerance.
C. Package top surface is molded with an electrically nonconductive clear plastic compound having an index of refraction of 1.55.
D. Contact finish is copper alloy A194 with pre-plated NiPdAu lead finish.
E. This package contains no lead (Pb).
F. This drawing is subject to change without notice.
Figure 7. Package FN — Dual Flat No-Lead Packaging Configuration
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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MECHANICAL DATA
TOP VIEW
DETAIL A
2.18 0.05
Ao
0.254
0.02
5 Max
4.00
8.00
3.50 0.05
1.50
4.00
2.00 0.05
+ 0.30
− 0.10
1.75
B
B
AA
1.00
0.25
DETAIL B
2.18 0.05
Bo
5 Max
0.83 0.05
Ko
NOTES: A. All linear dimensions are in millimeters. Dimension tolerance is ± 0.10 mm unless otherwise noted.
B. The dimensions on this drawing are for illustrative purposes only. Dimensions of an actual carrier may vary slightly.
C. Symbols on drawing Ao, Bo, and Ko are defined in ANSI EIA Standard 481−B 2001.
D. Each reel is 178 millimeters in diameter and contains 3500 parts.
E. TAOS packaging tape and reel conform to the requirements of EIA Standard 481−B.
F. In accordance with EIA standard, device pin 1 is located next to the sprocket holes in the tape.
G. This drawing is subject to change without notice.
Figure 8. Package FN Carrier Tape
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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MANUFACTURING INFORMATION
The FN package has been tested and has demonstrated an ability to be reflow soldered to a PCB substrate.
The process, equipment, and materials used in these test are detailed below.
The solder reflow profile describes the expected maximum heat exposure of components during the solder
reflow process of product on a PCB. Temperature is measured on top of component. The components should
be limited to a maximum of three passes through this solder reflow profile.
Table 2. TCS310x Solder Reflow Profile
PARAMETER REFERENCE TCS310x
Average temperature gradient in preheating 2.5°C/sec
Soak time tsoak 2 to 3 minutes
Time above 217°C t1Max 60 sec
Time above 230°C t2Max 50 sec
Time above Tpeak −10°C t3Max 10 sec
Peak temperature in reflow Tpeak 260°C
Temperature gradient in cooling Max −5°C/sec
t3
t2
t1
tsoak
T3
T2
T1
Tpeak
Not to scale — for reference only
Time (sec)
Temperature (C)
Figure 9. TCS310x Solder Reflow Profile Graph
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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MANUFACTURING INFORMATION
Moisture Sensitivity
Optical characteristics of the device can be adversely affected during the soldering process by the release and
vaporization of moisture that has been previously absorbed into the package molding compound. To ensure the
package molding compound contains the smallest amount of absorbed moisture possible, each device is
dry-baked prior to being packed for shipping. Devices are packed in a sealed aluminized envelope with silica
gel to protect them from ambient moisture during shipping, handling, and storage before use.
The FN package has been assigned a moisture sensitivity level of MSL 3 and the devices should be stored under
the following conditions:
Temperature Range 5°C to 50°C
Relative Humidity 60% maximum
Total Time 6 months from the date code on the aluminized envelope — if unopened
Opened Time 168 hours or fewer
Rebaking will be required if the devices have been stored unopened for more than 6 months or if the aluminized
envelope has been open for more than 168 hours. If rebaking is required, it should be done at 50°C for 12 hours.
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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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.
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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