ISL29023 ® Data Sheet March 3, 2009 Integrated Digital Ambient Light Sensor with Interrupt Function The ISL29023 is an integrated ambient and infrared light to digital converter with I2C (SMBus Compatible) Interface. Its advanced self-calibrated photodiode array emulates human eye response with excellent IR rejection. The on-chip ADC is capable of rejecting 50Hz and 60Hz flicker caused by artificial light sources. The lux range select feature allows users to program the lux range for optimized counts/lux. For ambient light sensing, an internal 16-bit ADC has been designed based upon the charge-balancing technique. The ADC conversion time is nominally 90ms and is user adjustable from 11µs to 90ms, depending on oscillator frequency and ADC resolution. In normal operation, typical current consumption is 70µA. In order to further minimize power consumption, two power-down modes have been provided. If polling is chosen over continuous measurement of light, the auto-power-down function shuts down the whole chip after each ADC conversion for the measurement. The other power-down mode is controlled by software via the I2C interface. The power consumption can be reduced to less than 0.3µA when powered down. The ISL29023 supports a software and hardware interrupt that remains asserted until the host clears it through I2C interface. Function of ADC conversion continues without stopping after interrupt is asserted. Designed to operate on supplies from 2.25V to 3.63V with an I2C supply from 1.7V to 3.63V, the ISL29023 is specified for operation over the -40°C to +85°C ambient temperature range. FN6691.0 Features Ambient Light Sensing • Simple Output Code Directly Proportional to lux • Variable Conversion Resolution up to 16-bits • Adjustable Sensitivity up to 65 Counts per lux • Selectable Range (via I2C) - Range 1 = 0.015 lux to 1,000 lux - Range 2 = 0.06 lux to 4,000 lux - Range 3 = 0.24 lux to 16,000 lux - Range 4 = 0.96 lux to 64,000 lux • Integrated 50/60Hz Noise Rejection • Temperature Compensated • Works Under Various Light Sources, Including Sunlight Excellent Spectral Response • Light Sensor Close to Human Eye Response - Excellent Light Sensor IR and UV Rejection Ultra Low Power • 85μA Max Operating Current • Software Shutdown and Automatic Shutdown - 0.3μA Max Shutdown Current Additional Features • I2C and SMBus Compatible • 1.7V to 3.63V Supply for I2C Interface • 2.25V to 3.63V Sensor Power Supply • Small Form Factor - 6 Ld 2.0x2.1x0.7mm ODFN Package Pinout ISL29023 (6 LD ODFN) TOP VIEW • Pb-Free (RoHS compliant) Applications VDD 1 6 SDA GND 2 5 SCL REXT 3 4 INT *EXPOSED PAD CAN BE CONNECTED TO GND OR ELECTRICALLY ISOLATED 1 • Display and Keypad Dimming Adjustment for: - Mobile Devices: Smart Phone, PDA, GPS - Computing Devices: Notebook PC, Webpad - Consumer devices: LCD-TV, Digital Picture Frame, Digital Camera • Industrial and Medical Light Sensing CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2009. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL29023 Ordering Information PART NUMBER (Note) TEMP. RANGE (°C) ISL29023IROZ-T7* -40 to +85 ISL29023IROZ-EVALZ PACKAGE (Pb-Free) 6 Ld ODFN PKG. DWG. # L6.2x2.1 Evaluation Board (Pb-free) *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Pin Descriptions PIN NUMBER PIN NAME 1 VDD DESCRIPTION Positive supply; connect this pin to a 2.25V to 3.63V supply. 2 GND Ground pin. 3 REXT External resistor pin for ADC reference; connect this pin to ground through a (nominal) 499kΩ resistor. 4 INT Interrupt pin; low for interrupt alarming. INT pin is open drain. INT remains asserted until the interrupt flag status bit is reset. 5 SCL I2C serial clock SDA I2C serial data 6 The I2C bus lines can be pulled from 1.7V to above VDD, 3.63V max. Exposed pad connected to ground or electrically isolated. Block Diagram VDD 1 COMMAND REGISTER PHOTODIODE ARRAY LIGHT DATA PROCESS INTEGRATION ADC DATA REGISTER I2C/SMBus IREF 5 SCL 6 SDA INTERRUPT REGISTER fOSC 3 2 4 REXT GND INT ISL29023 2 FN6691.0 March 3, 2009 ISL29023 Absolute Maximum Ratings (TA = +25°C) Thermal Information VDD Supply Voltage between VDD and GND . . . . . . . . . . . . . 4.0V I2C Bus (SCL, SDA) and INT Pin Voltage . . . . . . . . . . -0.2V to 4.0V I2C Bus (SCL, SDA) and INT Pin Current . . . . . . . . . . . . . . . <10mA REXT Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . -0.2V to VDD+0.5V Thermal Resistance (Typical, Note 1) θJA (°C/W) 6 Ld ODFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +90°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTE: 1. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA VDD = 3V, TA = +25°C, REXT = 499kΩ 1% tolerance, 16-bit ADC operation, unless otherwise specified. Electrical Specifications PARAMETER DESCRIPTION VDD Power Supply Range CONDITION MIN TYP 2.25 IDD Supply Current IDD1 Supply Current when Powered Down VI2C Supply Voltage Range for I2C Interface 1.7 fOSC Internal Oscillator Frequency 675 tint ADC Integration/Conversion Time FI2C I2C Clock Rate Range Software disabled or auto power-down 16-bit ADC data DATA_0 Count Output When Dark DATA_F Full Scale ADC Code E = 0 lux, Range 1 (1k lux) ΔDATA DATA Count Output Variation Over Three Light Sources: Fluorescent, Incandescent and Sunlight Ambient light sensing DATA_1 Light Count Output With LSB of 0.015 lux/count E = 300 lux, Fluorescent light (Note 2), Ambient light sensing, Range 1 (1k lux) DATA_2 Light Count Output With LSB of 0.06 lux/count DATA_3 MAX UNIT 3.63 V 70 85 µA 0.01 0.3 µA 750 3.63 V 825 kHz 90 ms 1 to 400 kHz 1 5 Counts 65535 Counts ±10 15000 % 20000 25000 Counts E = 300 lux, Fluorescent light (Note 2), Ambient light sensing, Range 2 (4k lux) 5000 Counts Light Count Output With LSB of 0.24 lux/count E = 300 lux, Fluorescent light (Note 2), Ambient light sensing, Range 3 (16k lux) 1250 Counts DATA_4 Light Count Output With LSB of 0.96 lux/count E = 300 lux, Fluorescent light (Note 2), Ambient light sensing, Range 4 (64k lux) 312 Counts DATA_IR1 Infrared Count Output E = 210 lux, Sunlight (Note 3), IR sensing, Range 1 DATA_IR2 Infrared Count Output E = 210 lux, Sunlight (Note 3), IR sensing, Range 2 5000 DATA_IR3 Infrared Count Output E = 210 lux, Sunlight (Note 3), IR sensing, Range 3 1250 DATA_IR4 Infrared Count Output E = 210 lux, Sunlight (Note 3), IR sensing, Range 4 VREF Voltage of REXT Pin 15000 20000 25000 312 0.52 V VIL SCL and SDA Input Low Voltage VIH SCL and SDA Input High Voltage 0.55 ISDA SDA Current Sinking Capability 4 5 mA IINT INT Current Sinking Capability 4 5 mA 1.25 V V NOTES: 2. 550nm green LED is used in production test. The 550nm LED irradiance is calibrated to produce the same DATA count against an illuminance level of 300 lux fluorescent light. 3. 850nm IR LED is used in production test. The 850nm LED irradiance is calibrated to produce the same DATA_IR count against an illuminance level of 210 lux sunlight at sea level. 3 FN6691.0 March 3, 2009 ISL29023 Principles of Operation Photodiodes and ADC The ISL29023 contains two photodiode arrays which convert light into current. The spectral response for ambient light sensing and IR sensing is shown in Figure 5 in the performance curves section. After light is converted to current during the light signal process, the current output is converted to digital by a built-in 16-bit Analog-to-Digital Converter (ADC). An I2C command reads the ambient light or IR intensity in counts. The converter is a charge-balancing integrating type 16-bit ADC. The chosen method for conversion is best for converting small current signals in the presence of an AC periodic noise. A 100ms integration time, for instance, highly rejects 50Hz and 60Hz power line noise simultaneously. See “Integration and Conversion Time” on page 7. The built-in ADC offers user flexibility in integration time or conversion time. There are two timing modes: Internal Timing Mode and External Timing Mode. In Internal Timing Mode, integration time is determined by an internal oscillator (fOSC), and the n-bit (n = 4, 8, 12, 16) counter inside the ADC. In External Timing Mode, integration time is determined by the time between two consecutive I2C External Timing Mode commands. A good balancing act of integration time and resolution (depending on the application) is required for optimal results. The ADC has I2C programmable range select to dynamically accommodate various lighting conditions. For very dim conditions, the ADC can be configured at its lowest range (Range 1) in the ambient light sensing. Low-Power Operation The ISL29023 initial operation is at the power-down mode after a supply voltage is provided. The data registers contain the default value of 0. When the ISL29023 receives an I2C command to do a one-time measurement from an I2C master, it will start ADC conversion with light sensing. It will go to the power-down mode automatically after one conversion is finished and keep the conversion data available for the master to fetch anytime afterwards. The ISL29023 will continuously do ADC conversion with light sensing if it receives an I2C command of continuous measurement. It will continuously update the data registers with the latest conversion data. It will go to the power-down mode after it receives the I2C command of power-down. Ambient Light and IR Sensing There are four operational modes in ISL29023: Programmable ALS once with auto power-down, programmable IR sensing once with auto power-down, programmable continuous ALS sensing and programmable continuous IR sensing. These four modes can be programmed in series to fulfill the application needs. The detailed program configuration is listed in “Command Register I 00(hex)” on page 5. 4 When the part is programmed for ambient light sensing, the ambient light with wavelength within the “Ambient Light Sensing” spectral response curve in Figure 5 is converted into current. With ADC, the current is converted to an unsigned n-bit (up to 16 bits) digital output. When the part is programmed for infrared (IR) sensing, the IR light with wavelength within the “IR Sensing” spectral response curve in Figure 5 is converted into current. With ADC, the current is converted to an unsigned n-bit (up to 16-bits) digital output. Interrupt Function The active low interrupt pin is an open drain pull-down configuration. The interrupt pin serves as an alarm or monitoring function to determine whether the ambient light level exceeds the upper threshold or goes below the lower threshold. It should be noted that the function of ADC conversion continues without stopping after interrupt is asserted. If the user needs to read the ADC count that triggers the interrupt, the reading should be done before the data registers are refreshed by the following conversions. The user can also configure the persistency of the interrupt pin. This reduces the possibility of false triggers, such as noise or sudden spikes in ambient light conditions. An unexpected camera flash, for example, can be ignored by setting the persistency to 8 integration cycles. I2C Interface There are eight 8-bit registers available inside the ISL29023. The two command registers define the operation of the device. The command registers do not change until the registers are overwritten. The two 8-bit data Read Only registers are for the ADC output. The data registers contain the ADC's latest digital output, or the number of clock cycles in the previous integration period. The ISL29023’s I2C interface slave address is internally hardwired as 1000100. When 1000100x with x as R or W is sent after the Start condition, this device compares the first 7 bits of this byte to its address and matches. Figure 1 shows a sample one-byte read. Figure 2 shows a sample one-byte write. The I2C bus master always drives the SCL (clock) line, while either the master or the slave can drive the SDA (data) line. Figure 2 shows a sample write. Every I2C transaction begins with the master asserting a start condition (SDA falling while SCL remains high). The following byte is driven by the master, and includes the slave address and read/write bit. The receiving device is responsible for pulling SDA low during the acknowledgement period. Every I2C transaction ends with the master asserting a stop condition (SDA rising while SCL remains high). For more information about the I2C standard, please consult the Philips™ I2C specification documents. FN6691.0 March 3, 2009 ISL29023 I2C DATA DEVICE ADDRESS START I2C SDA IN REGISTER ADDRESS W A DEVICE ADDRESS STOP START A6 A5 A4 A3 A2 A1 A0 W A R7 R6 R5 R4 R3 R2 R1 R0 A DATA BYTE0 A A6 A5 A4 A3 A2 A1 A0 W SDA DRIVEN BY ISL29023 A I2C SDA OUT A SDA DRIVEN BY MASTER A SDA DRIVEN BY MASTER SDA DRIVEN BY MASTER A D7 D6 D5 D4 D3 D2 D1 D0 I2C CLK 1 2 3 5 4 7 6 8 1 9 2 3 5 4 6 7 8 1 9 2 3 4 5 6 7 9 8 1 2 4 3 6 5 7 8 9 FIGURE 1. I2C READ TIMING DIAGRAM SAMPLE I2C DATA DEVICE ADDRESS START A REGISTER ADDRESS FUNCTIONS W A W A R7 R6 R5 R4 R3 R2 R1 R0 A B7 B6 B5 B4 B3 B2 B1 B0 A SDA DRIVEN BY MASTER A SDA DRIVEN BY MASTER STOP A I2C SDA IN A6 A5 A4 A3 A2 A1 A0 A I2C SDA OUT SDA DRIVEN BY MASTER A I2C CLK IN 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 5 4 6 7 8 9 FIGURE 2. I2C WRITE TIMING DIAGRAM SAMPLE Register Set There are eight registers that are available in the ISL29023. Table 1 summarizes their functions. TABLE 1. REGISTER SET BIT ADDR REG NAME 7 6 5 4 3 2 00h COMMANDI OP2 OP1 OP0 01h COMMANDII 0 0 0 1 0 DEFAULT 0 0 FLAG PRST1 PRST0 00h 0 RES1 RES0 RANGE1 RANGE0 00h 02h DATALSB D7 D6 D5 D4 D3 D2 D1 D0 00h 03h DATAMSB D15 D14 D13 D12 D11 D10 D9 D8 00h 04h INT_LT_LSB TL7 TL6 TL5 TL4 TL3 TL2 TL1 TL0 00h 05h INT_LT_MSB TL15 TL14 TL13 TL12 TL11 TL10 TL9 TL8 00h 06h INT_HT_LSB TH7 TH6 TH5 TH4 TH3 TH2 TH1 TH0 FFh 07h INT_HT_MSB TH15 TH14 TH13 TH12 TH11 TH10 TH9 TH8 FFh TABLE 2. OPERATION MODE Command Register I 00(hex) The first command register has the following functions: 1. Operation Mode: Bits 7, 6, and 5. These three bits determine the operation mode of the device. 5 BITS 7 TO 5 OPERATION 000 Power-down the device 001 ALS once 010 IR once 100 Reserved (Do not use) 101 ALS continuous 110 IR continuous 111 Reserved (Do not use) FN6691.0 March 3, 2009 ISL29023 2. Interrupt flag; Bit 2. This is the status bit of the interrupt. The bit is set to logic high when the interrupt thresholds have been triggered (out of threshold window), and logic low when not yet triggered. Once activated and the interrupt is triggered, the INT pin goes low and the interrupt status bit goes high until the status bit is polled through the I2C read command. Both the INT output and the interrupt status bit are automatically cleared at the end of the 8-bit (00h) command register transfer. Data Registers (02 hex and 03 hex) The device has two 8-bit read-only registers to hold the data from LSB to MSB for ADC. The most significant bit (MSB) is accessed at 03 hex, and the least significant bit (LSB) is accessed at 02 hex. For 16-bit resolution, the data is from D0 to D15; for 12-bit resolution, the data is from D0 to D11; for 8-bit resolution, the data is from D0 to D7. The registers are refreshed after every conversion cycle. TABLE 7. DATA REGISTERS TABLE 3. INTERRUPT FLAG BIT 2 ADDRESS (hex) OPERATION 0 Interrupt is cleared or not triggered yet 1 Interrupt is triggered 3. Interrupt persist; Bits 1 and 0. The interrupt pin and the interrupt flag are triggered/set when the data sensor reading is out of the interrupt threshold window after m consecutive number of integration cycles. The interrupt persist bits determine m. TABLE 4. INTERRUPT PERSIST BIT 1:0 NUMBER OF INTEGRATION CYCLES 00 1 01 4 10 8 11 16 1. Resolution: Bits 3 and 2. Bits 3 and 2 determine the ADC’s resolution and the number of clock cycles per conversion. Changing the number of clock cycles does more than just change the resolution of the device; it also changes the integration time, which is the period the device’s analog-todigital (A/D) converter samples the photodiode current signal for a measurement. TABLE 5. ADC RESOLUTION DATA WIDTH NUMBER OF CLOCK CYCLES n-BIT ADC 00 216 = 65,536 16 01 212 = 4,096 12 10 28 = 256 8 11 24 = 16 4 2. Range: Bits 1 and 0. The Full Scale Range (FSR) can be adjusted via I2C using Bits 1 and 0. Table 6 lists the possible values of FSR for the 499kΩ REXT resistor. TABLE 6. RANGE/FSR LUX BITS 1:0 k RANGE(k) FSR (LUX) @ ALS SENSING FSR @ IR SENSING 00 1 Range1 1,000 Refer to page 3 01 2 Range2 4,000 Refer to page 3 10 3 Range3 16,000 Refer to page 3 11 4 Range4 64,000 Refer to page 3 6 03 D15 is MSB for 16-bit resolution; D11 is MSB for 12-bit resolution Interrupt Registers (04, 05, 06 and 07 hex) Registers 04 and 05 hex set the low (LO) threshold for the interrupt pin and the interrupt flag. 04 hex is the LSB and 05 hex is the MSB. By default, the Interrupt threshold LO is 00 hex for both LSB and MSB. Calculating Lux The second command register has the following functions: BITS 3:2 D0 is LSB for 4, 8, 12 or 16-bit resolution; D3 is MSB for 4-bit resolution; D7 is MSB for 8-bit resolution Registers 06 and 07 hex set the high (HI) threshold for the interrupt pin and the interrupt flag. 06 hex is the LSB and 07 hex is the MSB. By default, the Interrupt threshold HI is FF hex for both LSB and MSB. Command Register II 01(hex) . CONTENTS 02 The ISL29023’s ADC output codes, DATA, are directly proportional to lux in the ambient light sensing. (EQ. 1) E cal = α × DATA Here, Ecal is the calculated lux reading. The constant α is determined by the Full Scale Range and the ADC’s maximum output counts. The constant is independent of the light sources (fluorescent, incandescent and sunlight) because the light sources’ IR component is removed during the light signal process. The constant can also be viewed as the sensitivity (the smallest lux measurement the device can measure). Range ( k ) α = ---------------------------Count max (EQ. 2) Here, Range(k) is defined in Table 6. Countmax is the maximum output counts from the ADC. The transfer function used for n-bits ADC becomes: Range ( k ) E cal = --------------------------- × DATA n 2 (EQ. 3) Here, n = 4, 8, 12 or 16. This is the number of ADC bits programmed in the command register. 2n represents the maximum number of counts possible from the ADC output. Data is the ADC output stored in the data registers (02 hex and 03 hex). FN6691.0 March 3, 2009 ISL29023 Integration and Conversion Time The ADC resolution and fOSC determine the integration time, tint. R EXT n n 1 t int = 2 × -------------- = 2 × ---------------------------------------------725kHz × 499kΩ f OSC (EQ. 4) Here, EIR is the received IR intensity. The constant β changes with the spectrum of background IR noise, such as sunlight and incandescent light. The β also changes with the ADC’s range and resolution selections. Suggested PCB Footprint where n is the number of bits of resolution and n = 4, 8, 12 or 16. Therefore, 2n is the number of clock cycles. n can be programmed at the command register 01(hex) bits 3 and 2. TABLE 8. INTEGRATION TIME OF n-BIT ADC It is important that the users check the “Surface Mount Assembly Guidelines for Optical Dual FlatPack No Lead (ODFN) Package” before starting ODFN product board mounting. http://www.intersil.com/data/tb/TB477.pdf REXT (kΩ) n = 16-BIT n = 12-BIT n = 8-BIT n = 4-BIT 250 45ms 2.8ms 176µs 11µs 499** 90ms 5.6ms 352µs 22µs **Recommended REXT resistor value External Scaling Resistor REXT for fOSC and Range The ISL29023 uses an external resistor REXT to fix its internal oscillator frequency fOSC and the light sensing range, Range. fOSC and Range are inversely proportional to REXT. For user simplicity, the proportionality constant is referenced to 499kΩ: 499kΩ Range = ------------------ × Range ( k ) R EXT (EQ. 5) 499kΩ f OSC = ------------------ × 725 kHz R EXT (EQ. 6) Layout Considerations The ISL29023 is relatively insensitive to layout. Like other I2C devices, it is intended to provide excellent performance even in significantly noisy environments. There are only a few considerations that will ensure best performance. Route the supply and I2C traces as far as possible from all sources of noise. Use two power-supply decoupling capacitors, 1µF and 0.1µF, placed close to the device. Typical Circuit A typical application for the ISL29023 is shown in Figure 3. The ISL29023’s I2C address is internally hardwired as 1000100. The device can be tied onto a system’s I2C bus together with other I2C compliant devices. Soldering Considerations Noise Rejection In general, integrating type ADC’s have excellent noise-rejection characteristics for periodic noise sources whose frequency is an integer multiple of the conversion rate. For instance, a 60Hz AC unwanted signal’s sum from 0ms to k*16.66ms (k = 1,2...ki) is zero. Similarly, setting the device’s integration time to be an integer multiple of the periodic noise signal, greatly improves the light sensor output signal in the presence of noise. Convection heating is recommended for reflow soldering; direct-infrared heating is not recommended. The plastic ODFN package does not require a custom reflow soldering profile, and is qualified to +260°C. A standard reflow soldering profile with a +260°C maximum is recommended. ADC Output in IR Sensing The ISL29023’s ADC output codes, DATA, are directly proportional to the IR intensity received in the IR sensing. DATA IR = β × E IR (EQ. 7) 7 FN6691.0 March 3, 2009 ISL29023 1.7V TO 3.63V R1 10k R2 10k I2C MASTER R3 RES1 MICROCONTROLLER SDA SCL INT 2.25V TO 3.63V I2C SLAVE_0 1 2 C1 1µF C2 0.1µF 3 REXT 499k VDD SDA GND SCL REXT INT I2C SLAVE_1 I2C SLAVE_n 6 SDA SDA 5 SCL SCL 4 ISL29023 FIGURE 3. ISL29023 TYPICAL CIRCUIT 8 FN6691.0 March 3, 2009 ISL29023 Typical Performance Curves (VDD = 3V, REXT = 499kΩ) 1.2 1.2 1.0 1.0 NORMALIZED RESPONSE SUN 0.8 HALOGEN 0.6 INCANDESCENT 0.4 FLUORESCENT 0.2 0 300 400 500 600 700 800 900 1000 1100 20° 10° 0° 10° 20° 30° 40° 50° 50° 60° 60° 70° 70° 80° 80° 90° 0.2 0.4 0.6 0.8 RELATIVE SENSITIVITY 90° 1.0 1000 1100 1000 ALS SENSING RANGE 1 (1k Lux) 16-BIT ADC NO COVER GLASS 900 800 700 65535 INCANDESCENT HALOGEN 600 500 32768 400 FLUORESCENT 300 200 Ecal = 100 1000 LUX 216 x DATA 0 100 200 300 400 500 600 700 800 900 1000 0 LUX METER READING (LUX) 1.10 0 Lux NORMALIZED OUTPUT CODE OUTPUT CODE (COUNTS) 0 FIGURE 7. SENSITIVITY TO THREE LIGHT SOURCES 8 6 4 2 0 -60 IR SENSING 0.2 0 FIGURE 6. RADIATION PATTERN 10 0.4 FIGURE 5. NORMALIZED SPECTRAL RESPONSE FOR AMBIENT LIGHT SENSING AND IR SENSING CALCULATED ALS READING (LUX) FIGURE 4. NORMALIZED SPECTRAL RESPONSE OF LIGHT SOURCES LUMINOSITY 30° ANGLE 40° 0.6 AMBIENT LIGHT SENSING -0.2 300 400 500 600 700 800 900 WAVELENGTH (nm) WAVELENGTH (nm) RADIATION PATTERN 0.8 ADC OUTPUT (COUNT) NORMALIZED LIGHT INTENSITY HUMAN EYE -20 20 60 100 TEMPERATURE (°C) FIGURE 8. OUTPUT CODE FOR 0 LUX vs TEMPERATURE 9 1.05 300 Lux FLUORESCENT LIGHT ALS SENSING RANGE 1 (1k Lux) 1.00 0.95 0.90 -60 -20 20 60 100 TEMPERATURE (°C) FIGURE 9. OUTPUT CODE vs TEMPERATURE FN6691.0 March 3, 2009 ISL29023 Typical Performance Curves (VDD = 3V, REXT = 499kΩ) (Continued) SUPPLY CURRENT (µA) 90 85 ALS SENSING 10,000 Lux 80 75 70 65 60 -40 -20 0 20 40 60 TEMPERATURE (°C) 80 100 120 SENSOR OFFSET FIGURE 10. SUPPLY CURRENT vs TEMPERATURE IN ALS SENSING 1 6 2 5 0.40 0.54 4 3 0.37 FIGURE 11. 6 LD ODFN SENSOR LOCATION OUTLINE All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 10 FN6691.0 March 3, 2009 ISL29023 Package Outline Drawing L6.2x2.1 6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN) Rev 0, 9/06 2.10 A 6 PIN 1 INDEX AREA B 1 6 PIN 1 INDEX AREA 0.65 2.00 1 . 35 (4X) 1 . 30 REF 0.10 6X 0 . 30 ± 0 . 05 0 . 65 TOP VIEW 0.10 M C A B 6X 0 . 35 ± 0 . 05 BOTTOM VIEW (0 . 65) MAX 0.75 SEE DETAIL "X" 0.10 C (0 . 65) (1 . 35) C BASE PLANE ( 6X 0 . 30 ) SEATING PLANE 0.08 C SIDE VIEW ( 6X 0 . 55 ) C 0 . 2 REF 5 (1 . 95) 0 . 00 MIN. 0 . 05 MAX. DETAIL "X" TYPICAL RECOMMENDED LAND PATTERN NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature. 11 FN6691.0 March 3, 2009