TSL2581CS TAOS, TSL2581CS Datasheet

Light to Digital Converters Light to Digital 30x Sensitivity

TSL2581CS

Manufacturer Part Number
TSL2581CS
Description
Light to Digital Converters Light to Digital 30x Sensitivity
Manufacturer
TAOS
Datasheet

Specifications of TSL2581CS

Data Bus Width
16 bit
Peak Wavelength
625 nm, 850 nm
Maximum Operating Frequency
795 KHz
Operating Supply Voltage
2.7 V to 3.6 V
Operating Current
175 uA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
- 30 C
Interface Type
I2C
Maximum Fall Time
300 ns
Maximum Rise Time
300 ns
Mounting Style
SMD/SMT
Resolution
16 bit
Package / Case
DFN-6
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TSL2581CS
Manufacturer:
TAOS
Quantity:
8 000
r
Description
The LUMENOLOGY r Company
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The TSL2580 and TSL2581 are very-high sensitivity light-to-digital converters that transform light intensity to
a digital signal output capable of direct I
one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS
integrated circuit capable of providing a near-photopic response over an effective 16-bit dynamic range (16-bit
resolution). Two integrating ADCs convert the photodiode currents to a digital output that represents the
irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance
(ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The
TSL2580 device permits an SMB-Alert style interrupt, and the TSL2581 device supports a traditional level style
interrupt that remains asserted until the firmware clears it.
While useful for general purpose light sensing applications, the TSL2580/81 devices are designed particularly
for display panels (LCD, OLED, etc.) with the purpose of extending battery life and providing optimum viewing
in diverse lighting conditions. Display panel backlighting, which can account for up to 30 to 40 percent of total
platform power, can be automatically managed. Both devices are also ideal for controlling keyboard illumination
based upon ambient lighting conditions. Illuminance information can further be used to manage exposure
control in digital cameras. The TSL2580/81 devices are ideal in notebook/tablet PCs, LCD monitors, flat-panel
televisions, cell phones, and digital cameras. In addition, other applications include street light control, security
lighting, sunlight harvesting, machine vision, and automotive instrumentation clusters.
Approximately 30
TSL2560/61 Device
Approximates Human Eye Response
Programmable ALS Interrupt Function with
User-Defined Upper and Lower Threshold
Settings
16-Bit Digital Output with SMBus (TSL2580)
at 100 kHz or I
400 kHz
Programmable Analog Gain and Integration
Time Supporting 1,000,000-to-1 Dynamic
Range
Automatically Rejects 50/60-Hz Lighting
Ripple
Low Quiescent Current 3 mA in Power
Down Mode
RoHS Compliant
2
C (TSL2581) Fast-Mode at
Features
Texas Advanced Optoelectronic Solutions Inc.
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More Sensitive Than the
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
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C (TSL2581) or SMBus (TSL2580) interface. Each device combines
www.taosinc.com
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Ambient Light Sensor (ALS) for Smart
Phones, Digital Photo Frames, and Portable
Navigation Systems
ALS for LED Signs, Laptop Computers, and
LCD TVs
ADDR SEL 2
GND 3
V
LIGHT-TO-DIGITAL CONVERTER
dd
Package Drawings are Not to Scale
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1
DUAL FLAT NO-LEAD
Applications
PACKAGE FN
(TOP VIEW)
TSL2580, TSL2581
Copyright E 2010, TAOS Inc.
TAOS098 − MARCH 2010
6 SDA
5 INT
4 SCL
1

Related parts for TSL2581CS

TSL2581CS Summary of contents

Page 1

... ALS for LED Signs, Laptop Computers, and LCD TVs 2 C (TSL2581) or SMBus (TSL2580) interface. Each device combines r www.taosinc.com TSL2580, TSL2581 TAOS098 − MARCH 2010 PACKAGE FN DUAL FLAT NO-LEAD (TOP VIEW) 6 SDA 1 5 INT 4 SCL Package Drawings are Not to Scale Applications Copyright E 2010, TAOS Inc ...

Page 2

... The TSL258x devices have the ability to define a threshold above and below the current light level. An interrupt is generated when the value of a conversion exceeds either of these limits. Copyright E 2010, TAOS Inc. 2 Channel 0 ...

Page 3

... TSL2580 (Note 2) TSL2581 (Note BUS r www.taosinc.com TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 ORDERING NUMBER FN TSL2580FN FN TSL2581FN −0 3.8 V − −40°C to 85°C 2000 V MIN NOM MAX 2.7 3 3.6 −30 70 0 Copyright E 2010, TAOS Inc. r † 3.8 V UNIT V ° ...

Page 4

... The integration time dependent on internal oscillator frequency (f int Timing Register (0xFF) as described in the Register section. For nominal f Copyright E 2010, TAOS Inc. 4 TEST CONDITIONS Active Power down 3 mA sink current 6 mA sink current ...

Page 5

... TEST CONDITIONS r www.taosinc.com TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 MIN TYP MAX UNIT 2.7 688 ms 0 400 kHz 10 100 kHz μs 1.3 μs 0.6 μs 0.6 μs 0.6 μs 0 0.9 100 ns μs 1.3 μs 0 300 ns 300 Copyright E 2010, TAOS Inc ...

Page 6

... Master Frame 1 SMBus Slave Address Byte Figure 2. Example Timing Diagram for SMBus Send Byte Format 1 SCL SDA Start by Master Frame 1 SMBus Slave Address Byte Figure 3. Example Timing Diagram for SMBus Receive Byte Format Copyright E 2010, TAOS Inc (R) ( (HIGH) (SUSTA) t (SUDAT) Start t ...

Page 7

... The LUMENOLOGY r Company TYPICAL CHARACTERISTICS 1.0 0.8 0.6 0.4 0.2 0 −90 800 900 1000 1100 r www.taosinc.com TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 NORMALIZED RESPONSIVITY vs. ANGULAR DISPLACEMENT -Q +Q −60 − − Angular Displacement − ° Figure 5 Copyright E 2010, TAOS Inc ...

Page 8

... Block Read Protocol The TSL258x implements the following protocols of the Philips Semiconductor Write Protocol Read (Combined Format) Protocol Copyright E 2010, TAOS Inc. 8 PRINCIPLES OF OPERATION 2 C bus Fast-Mode. The TSL258x offers three slave Table 1. Slave Address Selection SLAVE ADDRESS 0101001 0111001 1001001 2 C protocols on pages 10 through 12 ...

Page 9

... Master-to-Slave Slave-to-Master Figure 6. SMBus and I The LUMENOLOGY r Company 2 C protocols, please review the Slave Address Wr A Data Byte Packet Protocol Element Key r www.taosinc.com TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 2 C) device to Master 2 C Specification Copyright E 2010, TAOS Inc ...

Page 10

... Slave Address Slave Address Slave Address Wr A Command Code Slave Address Slave Address Wr A Command Code Copyright E 2010, TAOS Inc Data Byte Figure 7. SMBus Send Byte Protocol Data Byte Figure 8. SMBus Receive Byte Protocol Command Code A Figure 9. SMBus Write Byte Protocol ...

Page 11

... ADC channel 1 LOW data register ADC channel 1 HIGH data register Manual integration timer LOW register Manual integration timer HIGH register r www.taosinc.com TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 ... A Data Byte ... A Data Byte ... Rd A Byte Count = ... A Data Byte R/W W R/W R Copyright E 2010, TAOS Inc ...

Page 12

... SMBus Block Read Protocol, the TSL258x device will automatically insert the appropriate Byte Count (Byte Count = 4) as illustrated in Figure 14. A write condition should not be used in conjunction with the 13h register. NOTE: Only the Send Byte Protocol should be used when clearing interrupts. Copyright E 2010, TAOS Inc. 12 Table 3. Command Register ...

Page 13

... ADC_EN. NOTE: The TSL258x device registers should be configured before ADC_EN is asserted. The LUMENOLOGY r Company Table 4. Control Register ADC_INTR ADC_VALID Resv Resv DESCRIPTION r www.taosinc.com TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 Reset Resv ADC_EN POWER 00h Copyright E 2010, TAOS Inc ...

Page 14

... If more than one device connected on the bus has pulled the SMBAlert line low, the highest priority (lowest address) device will win control of the bus during the slave address transfer. If the device loses this arbitration, the interrupt will not be cleared. The Alert Response Address is 0Ch. Copyright E 2010, TAOS Inc. 14 Table 5. Timing Register ...

Page 15

... TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 Reset PERSIST 00h Copyright E 2010, TAOS Inc ...

Page 16

... BITS Resv 7:3 Reserved. Write as 0. Gain Control. Sets the analog gain of the device according to the following table. Gain Gain 2:0 2:0 Copyright E 2010, TAOS Inc. 16 Table 9. Interrupt Threshold Register ADDRESS BITS 3h 7:0 ADC channel 0 lower byte of the low threshold 4h 7:0 ...

Page 17

... TSL2581 device is used. The LUMENOLOGY r Company LIGHT-TO-DIGITAL CONVERTER Table 11. ID Register DESCRIPTION Table 12. Constant Register CONSTANT DESCRIPTION r www.taosinc.com TSL2580, TSL2581 TAOS098 − MARCH 2010 1 0 Reset REVNO − − Reset − − protocol does not use Copyright E 2010, TAOS Inc ...

Page 18

... Address 18h 19h REGISTER ADDRESS BITS TIMERLOW 18h 7:0 TIMERHIGH 19h 7:0 Copyright E 2010, TAOS Inc. 18 Table 13. ADC Channel Data Registers BITS 14h 7:0 ADC channel 0 lower byte 15h 7:0 ADC channel 0 upper byte 16h 7:0 ADC channel 1 lower byte ...

Page 19

... Power =1) Figure 15. State Diagram //Set Command bit and Control Reg //Set Command bit and ALS Timing Reg //200 ms integration cycle //Set Command bit and Control Reg //Enable ADC Channels r www.taosinc.com TSL2580, TSL2581 TAOS098 − MARCH 2010 Copyright E 2010, TAOS Inc ...

Page 20

... DataLow and DataHigh variables ReadWord (Address, Command, DataLow, DataHigh) Channel1 = 256 * DataHigh + DataLow Copyright E 2010, TAOS Inc. 20 //Set Command bit and Word bit //Set Command bit and Word bit ...

Page 21

... PERSIST field in the Interrupt Control Register (02h) is set to 0000b. Either Level or SMBus Alert style can be used. An interrupt will be generated upon completion of each conversion. The interrupt threshold registers are ignored. The LUMENOLOGY r Company LIGHT-TO-DIGITAL CONVERTER r www.taosinc.com TSL2580, TSL2581 TAOS098 − MARCH 2010 Copyright E 2010, TAOS Inc ...

Page 22

... Module Name: // lux.cpp // //**************************************************************************** #define LUX_SCALE 16 // scale by 2^16 #define RATIO_SCALE 9 // scale ratio by 2^9 Copyright E 2010, TAOS Inc. 22 Lux = 0.13  CH0 − 0.24  CH1 Lux = 0.1649  CH0 − 0.3562  CH1 Lux = 0.0974  CH0 − 0.1786  CH1 Lux = 0.062  CH0 − 0.10  CH1 Lux/CH0 = 0 r www ...

Page 23

... TSL2581 // unsigned int iType − package type (1:CS Return: unsigned int − the approximate illuminance (lux) // The LUMENOLOGY r Company LIGHT-TO-DIGITAL CONVERTER See Timing Register r www.taosinc.com TSL2580, TSL2581 TAOS098 − MARCH 2010 Copyright E 2010, TAOS Inc ...

Page 24

... FN package if ((ratio >= 0) && (ratio <= K1C)) {b=B1C; m=M1C;} else if (ratio <= K2C) {b=B2C; m=M2C;} else if (ratio <= K3C) Copyright E 2010, TAOS Inc scale. Nominal setting // Scale/multiply value by 1/8 // Scale/multiply value by 1/16 r www.taosinc.com The LUMENOLOGY r Company r ...

Page 25

... LUX_SCALE; return(lux); } The LUMENOLOGY r Company LIGHT-TO-DIGITAL CONVERTER r www.taosinc.com TSL2580, TSL2581 TAOS098 − MARCH 2010 Copyright E 2010, TAOS Inc ...

Page 26

... PI fashion to the SCL and SDA lines. A typical impedance value between 10 kΩ and 100 kΩ can be used. Please note that while Figure 16 shows INT being pulled Copyright E 2010, TAOS Inc ...

Page 27

... NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. Figure 17. Suggested FN Package PCB Layout The LUMENOLOGY r Company LIGHT-TO-DIGITAL CONVERTER 2.3 0.9 0.9 r www.taosinc.com TSL2580, TSL2581 TAOS098 − MARCH 2010 0.40 1.70 0.40 Copyright E 2010, TAOS Inc ...

Page 28

... 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 18. Package FN — Dual Flat No-Lead Packaging Configuration Copyright E 2010, TAOS Inc. 28 MECHANICAL DATA V 1 ...

Page 29

... 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− 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. ...

Page 30

... Soak time Time above 217°C Time above 230°C Time above T −10°C peak Peak temperature in reflow Temperature gradient in cooling T peak Time (sec) Figure 20. TSL2580/TSL2581 Solder Reflow Profile Graph Copyright E 2010, TAOS Inc. 30 MANUFACTURING INFORMATION REFERENCE t soak peak t soak r www.taosinc.com TSL2580/81 2.5° ...

Page 31

... If rebaking is required, it should be done at 90°C for 4 hours. The LUMENOLOGY r Company MANUFACTURING INFORMATION 5°C to 50°C 60% maximum 6 months from the date code on the aluminized envelope — if unopened 168 hours or fewer r www.taosinc.com TSL2580, TSL2581 LIGHT-TO-DIGITAL CONVERTER TAOS098 − MARCH 2010 Copyright E 2010, TAOS Inc ...

Page 32

... 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 ...

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