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General Description TSL2580, TSL2581 Light-to-Digital Converter The TSL2580 and TSL2581 are very-high sensitivity light-to-digital converters that transform light intensity to a digital signal output capable of direct I²C (TSL2581) or SMBus (TSL2580) interface. Each device combines 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. Ordering Information and Content Guide appear at end of datasheet. ams Datasheet [v1-00] 2016-Apr-05 Page 1 Document Feedback

TSL2580, TSL2581 − General Description Key Benefits & Features The benefits and features of TSL2580, TSL2581, Light-to-Digital Converter are listed below: Figure 1: Added Value Of Using TSL2580, TSL2581 Benefits Features • Enables Operation in IR Light Environments • Patented Dual-Diode Architecture • Enables Dark Room to High Lux Sunlight Operation • 1M:1 Dynamic Range • Digital Interface is Less Susceptible to Noise • SMBus Digital Interface • Enables Low Standby Power Consumption • 3μA Quiescent Current • Reduces Board Space Requirements while • Available in 1.25mm x 1.75mm Chipscale or 2mm x 2mm Simplifying Designs Dual Flat No-Lead (FN) Packages • Approximately 30x More Sensitive Than the 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 I²C (TSL2581) Fast-Mode at 400 kHz • Programmable Analog Gain and Integration Time Supporting 1,000,000-to-1 Dynamic Range • Automatically Rejects 50/60-Hz Lighting Ripple Applications TSL2580, TSL2581, Light-to-Digital Converter is ideal for: • Ambient Light Sensor (ALS) for Smart Phones, Digital Photo Frames, and Portable Navigation Systems • ALS for LED Signs, Laptop Computers, and LCD TVs Page 2 Document Feedback ams Datasheet [v1-00] 2016-Apr-05

TSL2580, TSL2581 − General Description Figure 2: TSL2580, TSL2581 Block Diagram Block Diagram The functional blocks of this device are shown below: Channel 0 Visible and IR Channel 1 IR Only Integrating A/D Converter VDD = 2.7 V to 3.6 V ADDR SEL Address Select Command Register ADC Register Interrupt Two-Wire Serial Interface INT SCL SDA ams Datasheet [v1-00] 2016-Apr-05 Page 3 Document Feedback

Pin Assignments The TSL2580, TSL2581 pin assignments are described below: Figure 3: Package CS 6-Lead Chipscale TSL2580, TSL2581 − Pin Assignments Package CS 6-Lead Chipscale (Top View): Package Drawings are Not to Scale Vdd 1 ADDR SEL 2 GND 3 6 SDA 5 INT 4 SCL Figure 4: Package FN Dual Flat No-Lead Package FN Dual Flat No-Lead (Top View): Package Drawings are Not to Scale Vdd 1 ADDR SEL 2 GND 3 6 SDA 5 INT 4 SCL Figure 5: Terminal Functions Terminal Name CS Pkg No FN Pkg No Type Description VDD ADDR SEL GND SCL INT SDA 1 2 3 4 5 6 Page 4 Document Feedback 1 2 3 4 5 6 Supply voltage I Address select — three-state Power supply ground. All voltages are referenced to GND I O Serial clock input terminal — clock signal Level or SMB Alert interrupt — open drain I/O Serial data I/O terminal — serial data I/O ams Datasheet [v1-00] 2016-Apr-05

TSL2580, TSL2581 − Pin Assignments Detailed Description The TSL2580 and TSL2581 are second-generation ambient light sensor devices. Each contains two integrating analog-to-digital converters (ADC) that integrate currents from two photodiodes. Integration of both channels occurs simultaneously. Upon completion of the conversion cycle, the conversion result is transferred to the Channel 0 and Channel 1 data registers, respectively. The transfers are double-buffered to ensure that the integrity of the data is maintained. After the transfer, the device automatically begins the next integration cycle. Communication to the device is accomplished through a standard, two-wire SMBus or I²C serial bus. Consequently, the TSL258x device can be easily connected to a microcontroller or embedded controller. No external circuitry is required for signal conditioning, thereby saving PCB real estate as well. Since the output of the TSL258x device is digital, the output is effectively immune to noise when compared to an analog signal. The TSL258x devices also support an interrupt feature that simplifies and improves system efficiency by eliminating the need to poll a sensor for a light intensity value. The primary purpose of the interrupt function is to detect a meaningful change in light intensity. The concept of a meaningful change can be defined by the user both in terms of light intensity and time, or persistence, of that change in intensity. 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. ams Datasheet [v1-00] 2016-Apr-05 Page 5 Document Feedback

Absolute Maximum Ratings TSL2580, TSL2581 − Absolute Maximum Ratings 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. Figure 6: Absolute Maximum Ratings Over Operating Free-Air Temperature Range (unless otherwise noted) Symbol Parameter Min Max Units VDD (1) Supply voltage VO IO Tstrg Digital output voltage range Digital output current Storage temperature range -0.5 -1 -40 3.8 3.8 20 85 ESDHBM ESD tolerance, human body model ±2000 V V mA ºC V Note(s): 1. All voltages are with respect to GND. Page 6 Document Feedback ams Datasheet [v1-00] 2016-Apr-05

TSL2580, TSL2581 − Electrical Characteristics Electrical Characteristics Figure 7: Recommended Operating Conditions Symbol Parameter Min Nom Max Unit VDD TA VIL VIH Supply voltage Operating free-air temperature SCL, SDA input low voltage SCL, SDA input high voltage 3 2.7 -30 TSL2580(1) TSL2581(2) TSL2580(1) 2 TSL2581(2) 0.7 VDD 3.6 70 0.8 0.3 VDD V ºC V V Note(s): 1. Meets SMB specifications. 2. Meets I²C specifications where VDD = VBUS. Figure 8: Electrical Characteristics Over Recommended Operating Free-Air Temperature Range Symbol Parameter Test Conditions Min IDD Supply current VOL ILEAK INT, SDA output low voltage Leakage current Active Power down 3mA sink current 6mA sink current 0 0 -5 Typ 175 3 Max 250 10 0.4 0.6 5 Unit μA μA V V μA Figure 9: Operating Characteristics; VDD = 3 V, TA = 25ºC (unless otherwise noted) (1) (2) (3) (4) Parameter Test Conditions Channel Min Typ Max Unit Oscillator frequency fOSC 705 750 795 kHz Dark ADC count value Ee = 0, ITIME = 0xB6 (200 ms), gain=16x CH0 CH1 0 0 1 1 5 5 counts ams Datasheet [v1-00] 2016-Apr-05 Page 7 Document Feedback

Parameter Test Conditions Channel Min Typ Max Unit TSL2580, TSL2581 − Electrical Characteristics Full scale ADC count value ITIME = 0xDB (100 ms) ITIME = 0x6C (400 ms) ADC count value ADC count value ratio: CH1/CH0 Irradiance responsivity Re Gain scaling (relative to 1x) λp = 625 nm, ITIME = 0xF6 (27 ms), Ee = 171.6 μW/cm2, gain = 16x λp = 850 nm, ITIME = 0xF6 (27 ms), Ee = 220 μW/cm2, gain = 16x λp = 625 nm λp = 850 nm λp = 625 nm, ITIME = 0xF6 (27 ms) λp = 850 nm, ITIME = 0xF6 (27 ms) 8x 16x 111x CH0 CH1 CH0 CH1 CH0 CH1 CH0 CH1 CH0 CH1 CH0 CH1 CH0 CH1 CH0 CH1 CH0 CH1 37887 37887 65535 65535 4000 5000 6000 700 4000 5000 6000 2750 10.8 15.8 20.8 41 7 7 15 15 97 100 55 29.1 4 22.8 12.5 8 8 16 16 107 115 68 9 9 17 17 115 125 counts counts % counts/ (μW/cm2) x Note(s): 1. Optical measurements are made using small-angle incident radiation from light-emitting diode optical sources. Visible 640 nm LEDs and infrared 850 nm LEDs are used for final product testing for compatibility with high-volume production. 2. The 625 nm irradiance Ee is supplied by an AlInGaP light-emitting diode with the following characteristics: peak wavelength λp = 625 nm and spectral halfwidth Δλ½ = 20 nm. 3. The 850 nm irradiance Ee is supplied by a light-emitting diode with the following characteristics: peak wavelength λp = 850 nm and spectral halfwidth Δλ½ = 42 nm. 4. The integration time Tint, is dependent on internal oscillator frequency (fosc) and on the number of integration cycles (ITIME) in the Timing Register (0xFF) as described in the Register section. For nominal fosc = 750 kHz, nominal Tint = 2.7 ms × ITIME. Page 8 Document Feedback ams Datasheet [v1-00] 2016-Apr-05

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