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TCS3103 Datasheet Preview

TCS3103 Datasheet

LIGHT-TO-VOLTAGE COLOR SENSOR

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r
r
D Three-Channel RGB Color Sensor
D Converts Light Intensity to Voltage
D Single-Voltage Supply Operation —
4.5 V to 5.5 V
D Rail-to-Rail Output
D Programmable gain settings:
− TCS3103 (2y, 4y)
− TCS3104 (4y, 1y)
D Low Supply Current — 270 mA Typical
D Fast Response Time —
Rise Time = 12 ms Typical
D Low Dark Offset
TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
PACKAGE FN
DUAL FLAT NO-LEAD
(TOP VIEW)
VDD 1
GND 2
MFP 3
6 VOR
5 VOG
4 VOB
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
Red
Channel
Green
Channel
Blue
Channel
Current-to-Voltage
Converter
VOR
VOG
VOB
MFP
Control
The LUMENOLOGY r Company
r
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972r) 673-0759
www.taosinc.com
Copyright E 2010, TAOS Inc.
1




TAOS

TCS3103 Datasheet Preview

TCS3103 Datasheet

LIGHT-TO-VOLTAGE COLOR SENSOR

No Preview Available !

TCS3103, TCS3104
LIGHT-TO-VOLTAGE COLOR SENSOR
TAOS108B − JULY 2010
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).
Device
TCS3103
TCS3104
Table 1. Device Programming Option
Mode
GSM (Gain Select Mode)
GSM (Gain Select Mode)
Details
2× (MFP = 0) or 4× (MFP = 1)
4× (MFP = 0) or 1× (MFP = 1)
Terminal Functions
TERMINAL
NAME
NO.
GND
2
MFP
3
VDD
VOB
VOG
VOR
1
4
5
6
TYPE
Power
I
Power
O
O
O
DESCRIPTION
Power supply ground. All voltages are referenced to GND.
Multi-function logic input.
Supply voltage.
Blue channel voltage output.
Green channel voltage output.
Red channel voltage output.
Available Options
DEVICE
TCS3103
TCS3104
Gain
2×, 4×
4×, 1×
PACKAGE − LEADS
Dual Flat No-Lead − 6
Dual Flat No-Lead − 6
PACKAGE DESIGNATOR
FN
FN
ORDERING NUMBER
TCS3103FN
TCS3104FN
Copyright E 2010, TAOS Inc.
2
r
www.taosinc.com
The LUMENOLOGY r Company
r


Part Number TCS3103
Description LIGHT-TO-VOLTAGE COLOR SENSOR
Maker TAOS
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