TCS3104 datasheet(2/13 Pages) AMSCO

2 / 13 page

TCS3103, TCS3104

LIGHT-TO-VOLTAGE COLOR SENSOR

TAOS108B − JULY 2010

The LUMENOLOGY

r Company

E 2010, TAOS Inc.

www.taosinc.com

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 (2

y, 4y)

− TCS3104 (4

y, 1y)

D Low Supply Current — 270 mA Typical

D Fast Response Time —

Rise Time = 12

ms Typical

D Low 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

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

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