TAOS Inc.
is now
ams AG
The technical content of this TAOS datasheet is still valid.
Contact information:
Headquarters:
ams AG
Tobelbaderstrasse 30
8141 Unterpremstaetten, Austria
Tel: +43 (0) 3136 500 0
e-Mail:
ams_sales@ams.com
Please visit our website at
www.ams.com
r
r
TCS3404, TCS3414
DIGITAL COLOR SENSORS
TAOS137A − APRIL 2011
Features
D
Programmable Interrupt Function with
User-Defined Upper and Lower Threshold
Settings
PACKAGE CS
6-LEAD CHIPSCALE
(TOP VIEW)
SCL
A1
SYNC
A2
GND
A3
D
Internal Filter Eliminates Signal Fluctuation
Due to AC Lighting Flicker — No External
Capacitor Required
Accurate Means to Achieve
System-to-System Repeatability
Time Supporting 1,000,000-to-1 Dynamic
Range
to Modulated Light Sources (e.g. PWM)
D
SYNC Input Synchronizes Integration Cycle
D
Operating Temperature Range
−405C to 855C (CS Package)
−305C to 705C (FN Package)
D
Operating voltage of 2.7 V to 3.6 V
D
Available in Both an FN and a CS Package.
The CS Package is the Industry’s Smallest
Digital RGB Color Sensor
Applications
D
Provides Method to Derive Chromaticity
Coordinates to Manage Display
Backlighting (i.e. RGB LED, CCFL, etc.)
D
Provides Means to Derive Color
Temperature to White-Color Balance
Displays Under Various Lighting
Conditions
Description
Te
The
LUMENOLOGY
r
Company
ch
ni
c
The TCS3404 and TCS3414 digital color light sensors are designed to accurately derive the color chromaticity
and illuminance (intensity) of ambient light and provide a digital output with 16-bits of resolution. The devices
include an 8
×
2 array of filtered photodiodes, analog-to-digital converters, and control functions on a single
monolithic CMOS integrated circuit. Of the 16 photodiodes, 4 have red filters, 4 have green filters, 4 have blue
filters, and 4 have no filter (clear). With the advanced patent pending in-package trim capability,
device-to-device and system-to-system tolerance can be minimized allowing very precise repeatability to be
attained.
am
al
co s
A
nt G
en
ts
til
lv
SCL 1
6 GND
5 V
DD
4 INT
SYNC 2
SDA 3
Package Drawings are Not to Scale
D
16-Bit Digital Output with I
2
C at 400 kHz
D
Programmable Analog Gain and Integration
PACKAGE FN
DUAL FLAT NO-LEAD
(TOP VIEW)
End Products and Market Segments
D
HDTVs
D
Tablets, Laptops, Monitors
D
Medical Instrumentation
D
Consumer Toys
D
Industrial/Commercial Lighting
D
Industrial Process Control
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road
S
Suite 300
S
Plano, TX 75074
S
(972) 673-0759
r
www.taosinc.com
1
r
al
id
Copyright
E
2011, TAOS Inc.
D
In-Package Trim Provides an Easy and
B1
SDA
B2
VDD
B3
INT
TCS3404, TCS3414
DIGITAL COLOR SENSORS
TAOS137A − APRIL 2011
A synchronization input (SYNC) provides precise external control of sensor integration allowing the internal
conversion cycles to be synchronized to a pulsed light source. Furthermore, the synchronization feature
supports the following advanced modes of operation to maximize flexibility across a broad range of hardware
systems: (1) sync for one internal-time cycle, and (2) accumulate for specified number of pulses. The device
also supports free-running and serial-bus-controlled integration modes if precise coupling between the sensor
and light source is not required.
Four parallel analog-to-digital converters (ADC) transform the photodiode currents to an SMBus (TCS3404) or
I
2
C (TCS3414) digital output that, in turn, can be input to a microprocessor. The RGB values can be read in a
single read cycle to minimize the number of read command protocols defined in the communication interface.
The slave address for this device is 39h (0111001b). A single SMB-Alert style interrupt (TCS3404) as well as
a single traditional
level-style
interrupt (TCS3414) can be dynamically configured for any one of the four
channels including a corresponding high/low threshold setting. The interrupt will remain asserted until the
firmware clears the interrupt.
These devices are also ideal in controlling keyboard illumination in low ambient light conditions. Chromaticity
coordinates (x,y) can be used to derive color temperature for the purpose of white-color balancing of displays
and/or captured images. Illuminance, in lux, can be used to approximate the human eye response of ambient
light and to manage exposure control in digital cameras. The TCS3404/14 devices are ideal in notebook/tablet
PCs, LCD monitors, flat-panel televisions, cell phones, and digital cameras. Additional applications include
street light control, security lighting, sunlight harvesting, and automotive instrumentation clusters.
Functional Block Diagram
IR-Blocking Filter
(CS Package Only)
ch
ni
c
Te
V
DD
SYNC
Copyright
E
2011, TAOS Inc.
2
am
al
co s
A
nt G
en
ts
til
lv
Integrating
A/D Converter
Red Channel
Integrating
A/D Converter
Green Channel
Integrating
A/D Converter
Blue Channel
Integrating
A/D Converter
Clear Channel
Command
Register
4-Parallel ADC
Registers
Interrupt
INT
SCL
Synchronization
Two-Wire Serial Interface
SDA
The TCS3404/14 devices can help (1) automatically adjust the display brightness of a backlight to extend
battery, increase lamp life, and provide optimum viewing in diverse lighting conditions, (2) white-color balance
display panel and/or captured images in diverse lighting conditions, and (3) manage RGB LED backlighting to
maintain color consistency over a long period of time.
r
r
www.taosinc.com
The
LUMENOLOGY
r
Company
al
id
TCS3404, TCS3414
DIGITAL COLOR SENSORS
TAOS137A − APRIL 2011
Terminal Functions
TERMINAL
NAME
GND
INT
SCL
SDA
SYNC
V
DD
CS PKG
NO.
A3
B3
A1
B1
A2
B2
FN PKG
NO.
6
4
1
3
2
5
O
I
I/O
I
TYPE
DESCRIPTION
Power supply ground. All voltages are referenced to GND.
Level interrupt — open drain.
Serial clock input terminal — clock signal for I
2
C serial data.
Synchronous input.
Supply voltage.
Serial data I/O terminal — serial data I/O for I
2
C.
DEVICE
TCS3404
TCS3404
TCS3413
TCS3413
TCS3414
†
TCS3414
†
TCS3415
TCS3415
TCS3416
TCS3416
†
INTERFACE
SMBus
SMBus
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
Recommended device for single-device systems..
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
DD
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8 V
Digital output voltage range, V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 3.8 V
Digital output current, I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1 mA to 20 mA
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 85°C
ESD tolerance, human body model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 V
†
NOTE 1: All voltages are with respect to GND.
Recommended Operating Conditions
MIN
2.7
−40
−30
−0.5
2.1
NOM
3
MAX
3.6
85
70
0.8
3.6
UNIT
V
°C
°C
V
V
Supply voltage, V
DD
Te
Operating free-air temperature, T
A
(CS PAckage)
Operating free-air temperature, T
A
(FN PAckage)
SCL, SDA input low voltage, V
IL
SCL, SDA input high voltage, V
IH
The
LUMENOLOGY
r
Company
ch
ni
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.
am
al
co s
A
nt G
en
ts
til
lv
I
2
C ADDRESS
−
−
PACKAGE − LEADS
Chipscale−6
Chipscale−6
Chipscale−6
Chipscale−6
Chipscale−6
PACKAGE DESIGNATOR
CS
FN
FN
FN
FN
FN
CS
CS
CS
CS
Dual Flat No-Lead−6
Dual Flat No-Lead−6
Dual Flat No-Lead−6
Dual Flat No-Lead−6
Dual Flat No-Lead−6
0x29
0x29
0x39
0x39
0x49
0x49
0x59
0x59
r
r
www.taosinc.com
Available Options
al
id
ORDERING NUMBER
TCS3404CS
TCS3404FN
TCS3413FN
TCS3414FN
TCS3415FN
TCS3416FN
TCS3413CS
TCS3414CS
TCS3415CS
TCS3416CS
Copyright
E
2011, TAOS Inc.
3
TCS3404, TCS3414
DIGITAL COLOR SENSORS
TAOS137A − APRIL 2011
Electrical Characteristics, T
A
= 255C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Power on (ADC inactive)
I
DD
V
OL
I
LEAK
Supply current @ V
DD
= 3.6 V
INT, SDA output low voltage
Input leakage current (SDA, SCL, SYNC)
Power on (ADC active)
Power down
3 mA sink current
V
IH
= V
DD,
V
IL
= GND
0
−5
MIN
TYP
7.7
8.7
700
MAX
10
11
1000
0.4
5
UNIT
mA
mA
μA
V
μA
AC Electrical Characteristics, V
DD
= 3.3 V, T
A
= 255C (unless otherwise noted)
PARAMETER
†
Clock frequency 400 kHz (I
2
C)
f
(SCL)
t
(BUF)
t
(HDSTA)
t
(SUSTA)
t
(SUSTO)
t
(HDDAT)
t
(SUDAT)
t
(LOW)
t
(HIGH)
t
(TIMEOUT)
t
F
t
R
C
i
t
LOW (SYNC)
t
HIGH (SYNC)
t
F (SYNC)
t
R (SYNC)
†
TEST CONDITIONS
MIN
0
10
TYP
Clock frequency 100 kHz (SMBus)
Bus free time between start and stop condition
Hold time after (repeated) start condition. After
this period, the first clock is generated.
Repeated start condition setup time
Stop condition setup time
Data hold time
Data setup time
SCL clock low period
SCL clock high period
Detect clock/data low timeout (SMBus only)
Clock/data fall time
Clock/data rise time
Input pin capacitance
SYNC low period (see Figure 1)
SYNC high period (see Figure 1)
SYNC fall time (see Figure 1)
SYNC rise time (see Figure 1)
Specified by design and characterization; not production tested.
ch
ni
c
Te
Copyright
E
2011, TAOS Inc.
4
am
al
co s
A
nt G
en
ts
til
lv
100
kHz
μs
μs
μs
μs
μs
ns
μs
μs
1.3
0.6
0.6
0.6
0
0.9
100
1.3
0.6
25
35
ms
ns
ns
300
300
10
pF
μs
μs
ns
ns
50
50
50
50
t
LOW (SYNC)
t
R (SYNC)
t
F (SYNC)
t
HIGH (SYNC)
Figure 1. Timing Diagram for Sync
r
r
www.taosinc.com
The
LUMENOLOGY
r
Company
al
id
MAX
UNIT
kHz
400
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
