TSL4531 TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS], TSL4531 Datasheet

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TSL4531

Manufacturer Part Number
TSL4531
Description
DIGITAL AMBIENT LIGHT SENSOR
Manufacturer
TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS]
Datasheet
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Description
Functional Block Diagram
The LUMENOLOGY r Company
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The TSL4531 family of devices provides ambient light sensing (ALS) that approximates human eye response
under a variety of lighting conditions. The devices have three selectable integration times and provide a direct
16-bit lux output via an I
outdoor applications where it is exposed to direct sunlight. The device is ideal for use in automatic control of
street lights and security, billboard, and automotive lighting. The TSL4531 devices can also be used in solid state
and general lighting for automatic control and daylight harvesting to maximize energy conservation. Other
applications include display backlight control to extend battery life and optimize visibility in cell phones, tablets,
and notebooks.
Simple Direct Lux Output
Approximates Human Eye Response in
Diverse Lighting Conditions
Three User-Selectable Integration Times
(400 ms, 200 ms, and 100 ms)
Wide Dynamic Range — 3 lux to 220k lux
Rejects 50 Hz/60 Hz Lighting Ripple
Low Active Current (110 mA typical) with
Power Down Mode (2.2 mA typical) Enables
Green Products
16-bit Digital Output with I
Ultra-Small 2 mm y 2 mm ChipLED package
2.5-V Supply Voltage with 1.8-V Logic
Interface
Features
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
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C bus interface. The wide dynamic range of the ALS makes it particularly useful in
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C Compatibility
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Photodiode
Array
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Outdoor Lighting Control
− Street Lights
− Security Lights
− Traffic Signals
− Commercial Billboards
Display Backlight Control
− Automotive Instrumentation
− Cell Phones
− Tablets and Notebooks
Solid-State and General Lighting and
Daylight Harvesting
− Commercial Lighting
− Industrial Lighting
GND 2
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DIGITAL AMBIENT LIGHT SENSOR
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Package Drawing Not to Scale
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Applications
PACKAGE CL
(TOP VIEW)
SCL
SDA
ChipLED
Copyright E 2011, TAOS Inc.
TAOS112 − OCTOBER 2011
4 SCL
3 SDA
TSL4531
1

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TSL4531 Summary of contents

Page 1

... The device is ideal for use in automatic control of street lights and security, billboard, and automotive lighting. The TSL4531 devices can also be used in solid state and general lighting for automatic control and daylight harvesting to maximize energy conservation. Other applications include display backlight control to extend battery life and optimize visibility in cell phones, tablets, and notebooks ...

Page 2

... ORDERING NUMBER Interface TSL45311CL TSL45313CL Interface TSL45315CL TSL45317CL 4.5 V −0 4.5 V −0 4.5 V − ...

Page 3

... A TEST CONDITIONS Active (Note 1) 2 Power down — activity TSL45311, TSL45315 TSL45313, TSL45317 TSL45311, TSL45315 TSL45313, TSL45317 = 255C, TCNTRL = 1y (Tint = 400 ms) (unless otherwise noted) A TEST CONDITIONS λ = white LED, CCT = 4000K λ = 345 μW/cm = 880 nm + 940 nm, E ...

Page 4

... TSL4531 DIGITAL AMBIENT LIGHT SENSOR TAOS112 − OCTOBER 2011 AC Electrical Characteristics, V † PARAMETER f Clock frequency (SCL) t Bus free time between start and stop condition (BUF) Hold time after (repeated) start condition. After t (HDSTA) this period, the first clock is generated. t Repeated start condition setup time ...

Page 5

... ANGULAR DISPLACEMENT — CL PACKAGE 1.0 0.8 0.6 0.4 0.2 0 900 1100 −90 −60 1000k 10k −155C 100 1 3 3.2 3 www.taosinc.com TSL4531 TAOS112 − OCTOBER 2011 vs − − Angular Displacement − ° Figure 3 OUTPUT vs ILLUMINANCE 100 10k 1000k Illuminance — lux Figure 5 Copyright E 2011, TAOS Inc. r ...

Page 6

... TAOS112 − OCTOBER 2011 Analog-to-Digital Converter The TSL4531 contains one integrating analog-to-digital converter (ADC) that integrates the current from the photodiode array. Upon completion of the conversion cycle, the conversion result is transferred to the data registers. Transfers are double-buffered to ensure that invalid data is not read during the transfer. After the transfer, the device will either automatically begin another integration cycle, or enter power-down mode, depending upon the mode setting in the control register ...

Page 7

... Data Read Protocol Slave Address 8 Data 2 C Read Protocol — Combined Format 2 Figure Protocols r www.taosinc.com TSL4531 DIGITAL AMBIENT LIGHT SENSOR TAOS112 − OCTOBER 2011 2 C protocol, please ... Data Byte ... Data ...

Page 8

... TSL4531 DIGITAL AMBIENT LIGHT SENSOR TAOS112 − OCTOBER 2011 Register Set The device is controlled and monitored by data registers and a command register accessed through the serial interface. These registers provide for a variety of control functions and can be read to determine results of the ADC conversions. ...

Page 9

... T = 400 ms int × 200 ms int × 100 ms int Reserved −− + (60/MULTIPLIER) ms. When PSAVESKIP = 1, the typical total cycle int r www.taosinc.com TSL4531 TAOS112 − OCTOBER 2011 1 0 Reset MODE 0x00 1 0 Reset TCNTRL 0x00 PURPOSE Copyright E 2011, TAOS Inc ...

Page 10

... Value = ID AND 0xF0, where AND represents a bit-wise AND function Copyright E 2011, TAOS Inc. 10 Table 5. ALS Data Registers BITS 0x04 7:0 ADC conversion low byte 0x05 7:0 ADC conversion high byte Table 6. ID Register DESCRIPTION DEVICE PART NUMBER TSL45317 TSL45313 TSL45315 TSL45311 r www.taosinc.com DESCRIPTION Reset Reserved The LUMENOLOGY r Company r ID ...

Page 11

... Suggested PCB pad layout guidelines for the CL package is shown in Figure 8. 0.55 0.85 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. Figure 8. Suggested CL Package PCB Layout The LUMENOLOGY r Company DIGITAL AMBIENT LIGHT SENSOR 0.95 0.70 1.2 1.35 r www.taosinc.com TSL4531 TAOS112 − OCTOBER 2011 Copyright E 2011, TAOS Inc ...

Page 12

... TSL4531 DIGITAL AMBIENT LIGHT SENSOR TAOS112 − OCTOBER 2011 PACKAGE CL TOP VIEW 0.277 Nominal Pin 1 0.277 Nominal 2.0 + 0.1 END VIEW 0.7 + 0.1 BOTTOM VIEW Solder Contacts and Photodiode Array Area (Note B) 0.60 0.30 Pin 1 (Note E) 0.10 0.15 NOTES: A. All linear dimensions are in millimeters. B. The die is offset within the package to center the photodiode array to the solder contacts within a tolerance of ± 50 μm. ...

Page 13

... G. This drawing is subject to change without notice. The LUMENOLOGY r Company DIGITAL AMBIENT LIGHT SENSOR 2.00 + 0.05 4. 0. and K are defined in ANSI EIA Standard 481−B 2001 Figure 10. Package CL Carrier Tape r www.taosinc.com TSL4531 TAOS112 − OCTOBER 2011 1.75 j 1.50 B 3.50 + 0.05 B DETAIL B 55 Max 2. Copyright E 2011, TAOS Inc ...

Page 14

... TSL4531 DIGITAL AMBIENT LIGHT SENSOR TAOS112 − OCTOBER 2011 The CL package has been tested and has demonstrated an ability to be reflow soldered to a PCB substrate. 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 ...

Page 15

... Rebaking Instructions When the shelf life or floor life limits have been exceeded, rebake at 50°C for 12 hours. The LUMENOLOGY r Company DIGITAL AMBIENT LIGHT SENSOR STORAGE INFORMATION r www.taosinc.com TSL4531 TAOS112 − OCTOBER 2011 Copyright E 2011, TAOS Inc ...

Page 16

... TSL4531 DIGITAL AMBIENT LIGHT SENSOR TAOS112 − OCTOBER 2011 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. ...

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