Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Features ‧Close to the human eye's response ‧15 bit effective resolution ‧50Hz/60Hz rejection ‧Low sensitivity variation across various light sources ‧Operating temperature performance, -40oC to 85oC ‧Wide supply voltage range, 2.7V to 5.5V • Low power consumption, less than 2mW while operating • Shut-down mode, current consumption less than 0.1uA 2 • I C serial port communication: (1) Standard 100kHz, (2).Fast 400kHz ‧High dynamic sensing range and from 0 to 220000 Lux ‧Size : 2.0mm(L)*2mm(W)*0.6mm(H) ‧RoHS compliant and Pb Free package Description The ALS-PDIC17-79NB/TR8 is a digital-output light sensor with a two-wire, I2C serial interface that is compatible with SMBus when working at 100kHz serial clock frequency. It combines a photodiode and an analog-to-digital converter (ADC) on a single CMOS integrated circuit to provide light measurements over an effective 15-bit dynamic range. Two operation modes are provided with one for constantly refreshing ADC and the other for one time integration. When working in “one time integration” mode, no external resister is required. The integrating conversion technique used by ALS-PDIC17-79NB/TR8 effectively eliminates the effect of flicker from AC-powered lamps, increasing the stability of the measurement. ALS-PDIC17-79NB/TR8 is very close to human-eye vision, having very low response to non-visible light, such as infrared and ultra-violet light. Applications • Detection of ambient light for controlling the backlighting of TFT LCD display • Automatic residential and commercial lighting management • Automatic contrast enhancement for electronic signboard • Ambient light monitoring device for daylight and artificial light Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 1 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Package Dimensions Note: 1. All Units are mm. 2. Unspecified tolerance is ±0.10mm Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 2 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Absolute Maximum Ratings (Ta=25℃) Parameter Symbol Min. Max. Units Storage temperature TSTG -40 100 °C Operating temperature TOPR -40 85 °C Supply voltage VDD -0.3 6.0 V Digital output voltage Vo -0.3 6.0 V Digital output current Io -10 +10 mA ESD tolerance, human body model - 2 - KV Block Diagram & Pad Descriptions Figure 1. ALS-PDIC17-79NB/TR8 Functional Block Diagram Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 3 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Electrical and Optical Characteristics (Ta=25℃ , VDD=3.3V) Parameter Supply current 2 I C output low voltage Symbol Response in dark environment Response to incandescent lamp Response to fluorescent lamp Min. Typ. Max. Units IDD Active mode - 0.4 0.5 mA IDDQ Power-down mode - - 0.1 uA VOL Io = 4mA - - 0.4 V Full scale - - 32,767 count Tint = 100mS - - 110,000 lux - - 550 - nm - - 1 count 23 32 - counts 20 30 - count Detection limit Peak sensitivity wavelength Test Conditions λp Rdak Ricd Rfrst Ev = 0 lux, Tint = 100 mS Ev = 100 lux Tint = 100 mS Ev = 100 lux Tint = 100 mS DC Characteristics of I2C Signals in Standard and Fast Mode Parameter Symbol Standard Mode Min. Max. 2.7 5.5 -0.5 1.0 2.0 Fast Mode Min. max. 2.7 5.5 -0.5 1.0 2.0 Unit Power supply voltage (recommend) VDD V Low level input voltage VIL V High level input voltage VIH V Hysteresis of Schmit trigger inputs Vhys 0.05VDD 0.05VDD V (VDD > 2V) Low level output voltage (open drain) VOL1 0 0.4 0 0.4 V at 3mA sink current (VDD > 2V) Output fall time from VIHMIN to VILMAX 20+0.1Cb 250 [2] with a bus capacitance from 10pF to tof 250[2] nS [1] 400pF Input current of each IO pins with an input voltage between 0.1VDD and Ii -10 10 -10 10 uA 0.9VDD Capacitance for each IO pin Ci 10 10 pF Notes: 1. Cb = capacitance of one bus line in pF 2. The maximum tf for the I2C data and clock bus lines quoted in the AC table is longer than the specified maximum tof for the output stages (250nS). This allows series protection resistors (Rs) to be connected between I2C data / clock pins and the I2C data / clock bus lines without exceeding the maximum specified tf. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 4 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 AC Characteristics of I2C Signals in Standard and Fast Mode Parameter fSCL Standard Mode Min. Max. 0 100 Fast Mode Min. max. 0 400 KHz tHD;STA 4.0 0.6 uS tLOW tHIGH 4.7 4.0 1.3 0.6 uS uS tSU;STA 4.7 0.6 uS tHD;DAT tSU;DAT 0 250 3.45 - 0 100 0.9 - uS nS tr - 1000 5 300 nS tf - 300 0.1 300 nS tSU;STO 4.0 - 0.6 - uS tBUF 4.7 - 1.3 - uS Cb - 400 - 400 pF VnL 0.1VDD - 0.1VDD - V VnH 0.2VDD - 0.2VDD - V Symbol I2C clock frequency Hold time (repeated) START condition. After this period, the first clock pulse is generated. Low period of I2C clock High period of I2C clock Set-up time for a repeated START condition Data hold time for I2C-bus devices Data set-up time Rise time of both I2C data and clock signalss Fall time of both I2C data and clock signals Set-up time for STOP condition Bus free time between STOP and START condition Capacitive load for each bus line Noise margin at the low level for each connected device (including hysteresis) Noise margin at the high level for each connected device (including hysteresis) - Unit Figure 2. I2C Timing Diagram Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 5 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Typical Electrical and Optical Characteristics Curves Fig.3 Output code vs. Illuminance Fig.4 6 1800 Fluorescent light Incandescent light 1600 Ev = 0 Lux Tint = 100 ms 1200 Output code (count) Vcc = 3.3 V Tint = 100 ms 1400 Output code (count) Output code vs. Supply voltage 1000 800 600 400 4 2 200 0 0 1000 2000 3000 4000 0 2.0 5000 2.5 3.0 3.5 4.0 4.5 5.0 Supply voltage (V) Illuminance (Lux) Fig.5 Output code vs. Supply voltage Fig.6 40 380 Ev = 100 Lux Tint = 100 ms Supply current vs. Supply voltage Ev = 100 Lux Tint = 100 ms 360 Supply current (uA) Output code (count) 30 20 10 340 320 300 280 0 2.0 2.5 3.0 3.5 4.0 4.5 260 2.0 5.0 2.5 3.0 Supply voltage (V) Fig.7 Supply current vs. Temperature 8 Output code (count) Supply current (uA) 4.5 5.0 10 VDD = 3.3 V Tint = 100 ms Ev = 100 Lux 340 320 300 280 260 -60 4.0 Fig.8 Output code vs. Temperature 380 360 3.5 Supply voltage (V) -40 -20 0 20 40 60 80 6 4 2 0 -60 100 Temperature (℃ ) VDD = 3.3 V Ev = 0 Lux Tint = 100 ms -40 -20 0 20 40 60 80 100 Temperature (℃ ) Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 6 Surface - Mount 2 I C Digital Ambient Light Sensor Fig.9 ALS-PDIC17-79NB/TR8 Output code vs. Temperature Fig.10 Spectral response 50 Output code (count) 40 VDD = 3.3 V Ev = 100 Lux Tint = 100 ms 30 20 10 0 -60 -40 -20 0 20 40 60 80 100 Temperature (℃ ) Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 7 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Communication Protocol ALS-PDIC17-79NB contains an 8-bit command register that can be written and read via the I2C bus. The command register controls the overall operation of the device. There is a two-byte word read-only register that contains the latest converted value of A/D converter. The I2C slave address is hardwired internally as 0111001 (0x39, MSB to LSB, A6 to A0). All the Send Byte protocol, the Receive Byte protocol and Receive Word protocol are implemented in ALS-PDIC17-79NB. The Send Byte protocol allows single bytes of data to be written to the device (see Figure 11-a). The written byte is called the COMMAND byte. The Receive Byte protocol allows one-byte data to be read from the device (see Figure 11-b). Two-byte data can be read by following the Receive Word Protocol shown in Figure 11-c. In Figure 11, the clear area represents data sent by the host (master) and the shaded area represents data returned by the ambient light sensor (slave device). 1 S 7 Slave Address 1 WR 0 1 A 0 8 Command Byte 1 A 0 1 P (a) send byte protocol 1 S 7 Slave Address 1 RD 1 1 A 0 8 Data 1 NA 1 1 P (b) Receive byte protocol 1 7 1 1 8 1 8 1 1 S Slave Address RD A LS byte of ADC A MS byte of ADC NA P 1 0 0 1 (c) Receive word (two bytes) protocol S = start condition P = stop condition Shaded = slave transmission A = acknowledge NA = not acknowledge WR = write RD= read Figure 11. Communication Protocol Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 8 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Communication Format ALS-PDIC17-79NB is capable of working as an I2C slave. Address of this device on I2C bus is always 0x39 (hexadecimal number 39). Registers of the slave device can be programmed by sending commands over I2C bus. Figure 12 shows an I2C write operation. To write to an internal register of the slave device a command must be sent by an I2C master. As illustrated in Figure 12, the I2C write command begins with a start condition. After the start condition, seven bits of address are sent with MSB going first. RD / WRn (=Low) command bit follows the address bits. Upon receiving a valid address the slave device responds by driving SDA low for an ACK. After receiving an ACK, I2C master sends eight bits of data with MSB first. Upon receiving eight bits of data the slave device generates an ACK. I2C master terminates this write command with a stop condition. START SDA (Master OUT) A6 SDA (Slave OUT) SCL (Master OUT) R/W A Device Address 0x39 (Hex) A5 A4 A3 A2 A1 A0 W 1 2 3 4 5 Figure 12. A R7 A SDA driven byMaster 6 7 8 A Command to Device 9 R6 R5 R4 R3 R2 R1 R0 2 3 4 5 A A SDA driven byMaster 1 STOP 6 7 8 9 I2C Timing Diagram for Send Byte Format Figure 13 shows an I2C read command sent by the master to the slave device. I2C read command begins with a start condition. After the start condition seven bits of address are sent by the master with MSB going first. After the address bits, RD / WRn command bit is sent. For a read command the RD / WRn bits is high. Upon receiving the address bits and RD / WRn command bits the slave device responds with an ACK. After sending an ACK, the slave device sends eight bits of data with MSB going first. After receiving the one byte data, the I2C master terminates this transaction by issuing a NACK command to indicate that the master only wanted to read one byte from the device. The master generates a stop condition to end this transaction. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 9 Surface - Mount 2 I C Digital Ambient Light Sensor START R/W A Device Address 0x39 (Hex) SDA (Master OUT) A6 A5 SDA (Slave OUT) A4 A3 A2 A1 ALS-PDIC17-79NB/TR8 A0 SDA driven bySlave R A SDA driven byMaster SCL (Master OUT) 1 2 3 4 5 6 7 A Data to Master 8 NA D7 D6 D5 D4 D3 D2 D1 D0 1 2 3 4 5 6 7 8 9 STOP 9 I2C Timing Diagram for Receive Byte Format Figure 13 Ambient light intensity count value can be obtained by reading registers of this device. Ambient light intensity count is a 15-bit wide number plus a valid bit and hence word (two bytes) read operation is needed, as shown in Figure 14. After receiving the two byte data, the I2C master terminates this transaction by issuing a NACK command to indicate that the master only wanted to read two bytes from the device. The master generates a stop condition to end this transaction. START SDA (Master OUT) A 2 3 4 5 6 7 Figure 14. 8 9 D7 D6 D5 D4 D3 D2 D1 D0 1 2 3 4 5 6 7 8 A MS byte of ADC Register A SDA driven bySlave SDA driven byMaster 1 A LS byte of ADC register A6 A5 A4 A3 A2 A1 A0 R SDA (Slave OUT) SCL (Master OUT) R/W A Device Address 0x39 (Hex) STOP NA SDA driven bySlave D7 D6 D5 D4 D3 D2 D1 D0 9 1 2 3 4 5 6 7 8 9 I2C Timing Diagram for Receive Word Format Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 10 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Theory of Operation The photocurrent, generated by the built-in photodiode while being illuminated, is proportionally converted to frequency; the digital frequency signal is then integrated by a 15-bit counter for a predetermined period of time (tint). This period of time is called integration time which can be adjusted by changing the nominal value of the resistor between the RINT and GND terminals. The converted data are read out through a two-wire, I2C Interface bus. Since the photodiode has been specially processed to suppress the spectral response in infrared region, the readout is very close to the photopic transfer function, v(λ), which is the mathematic expression of human-eye's response to ambient light. Address Option for I2C The I2C address is determined before placing an order; users can assign any one of the three addresses (0x39, 0x29, 0x40) for their specific application. Without any prior request for a specific I2C address, the default address is 0x39. Table 1. Conncecting options of I2C address Address Pin I2C Address Configuration Floating 0x39 (default) Tied to GND 0x29 Tied to VCC 0x44 ADC Register The ADC register contains 16 bits with a 15-bit wide data from D0 to D14 and a valid bit D15. The register is divided into two groups; D[15..8] is the most significant (MS) byte and D[7..0] is the least significant (LS) byte. See Table 2 for details. Table 2. ADC Register Structure Valid Bit D15 Data Bits D14 D13 ~ D8 MSB D7~D1 D0 LSB Most Significant (MS) byte Least Significant (LS) byte Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 11 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Device Command There are eight command codes are provided for I2C master to control the ambient light sensor. The specific function corresponding to each command code is elaborate in Table 3. Table 3. Command Code List Command Function Code Shut-down mode, this is the default state after applying VDD power to the device. 1xxx_xxxx During shut-down mode, users can do the communication test. Except the MSB (binary code) must be logic 1, the value written to the command register will not change any function and can be read back via the I2C bus by issuing Receive Byte Protocol. Activate the ambient light sensor and put the device in [continuous operation 0x0C mode], The ADC register will be refreshed every tint integration time which is set by an external resistor Rext. See Table 4 for details. Activate the ambient light sensor and put the device in [one time integration 0x04 mode]. The integration time is controlled by I2C commands, start and stop integration. Start integration: This command will reset the ADC register to 0x0000 and begin a 0x08 new integration in [one time integration mode]. This is an invalid command in [continuous operation mode]. Stop integration: This command will stop the integration in [one time integration 0x30 mode] and set the valid bit ( D[15] ) high. This is an invalid command in [continuous operation mode]. 0x34 Reserved for future expansion. Programming Sequence Case 1: Using internal integration timing (1). After being powered on, the device will initially be in the shut-down mode (default setting). (2). To operate the device, issue an Send Byte protocol (see Figure 11-a) with the device address 0x39 followed by a command byte of 0x0C to activate the ambient light sensor and put the device into "continuous operation mode". (3). To read the ADC conversion result, issue an Receive Word protocol (see Figure 11-c) with the device address 0x39 followed by two-byte reading procedures. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 12 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 (4). If a conversion has not been completed since being activated, the valid bit ( D[15] ) will be 0 to indicate that the data is not valid. If there is a valid conversion result available, the valid bit ( D[15] ) will be set logic high, and the remaining 15 bits will represent valid data from the ADC register. (5). Data may be read repeatedly from the ADC register, and although it will remain valid, the ADC register will not be updated until a new conversion completes. Case 2: Using external integration timing (1). After being powered on, the device will initially be in the shut-down mode (default setting). (2). To operate the device, issue an Send Byte protocol (see Figure 11-a) with the device address 0x39 followed by a command byte of 0x04 to activate the ambient light sensor and put the device into "one time integration mode". (3). I2C master sends a "start integration command" to the salve device by issuing Send Byte protocol with the device address 0x39 followed by a command byte of 0x08. (4). After a period of user defined integration time, I2C master sends a "stop integration command" to the salve device by issuing Send Byte protocol with the device address 0x39 followed by a command byte of 0x30. (5). To read the ADC conversion result, issue an Receive Word protocol (see Figure 11-c) with the device address 0x39 followed by two-byte reading procedures. (6). If the stop integration command is not received by the device, the valid bit ( D[15] ) will be 0 to indicate that the data is not valid. If there is a valid conversion result available, the valid bit ( D[15] ) will be set logic high, and the remaining 15 bits will represent valid data from the ADC register. (7). Data may be read repeatedly from the ADC register, and although it will remain valid, the ADC register will not be updated until a new complete integration cycle has been carried out. In both cases, the power consumption of the device can be reduced by issue an Send Byte protocol with the device address 0x39 followed by a data byte of 0x8C. Noise Rejection and Integration Time In general, integrating type ADC’s have an excellent noise rejection characteristics for periodic noise sources whose frequency is an integer multiple of the integration time. For instance, a 60Hz AC unwanted signal’s sum from 0ms to n*16.66ms (n = 1,2...ni) is zero. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 13 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Similarly, setting the ALS-PDIC17-79NB integration time to an integer multiple of periodic noise signal greatly improves the light sensor output signal in the presence of noise. The integration time, tint, of the ALS-PDIC17-79NB is set by an external resistor Rext. The maximum detection range is inversely proportional to the integration time; that means the longer integration time the lower detection range. Table 4. Rext Resistor Selection Guide Rext Detection range Resolution ( lux ) ( lux / count ) 50 220,000 6.71 100 110,000 3.36 200 200 55,000 1.68 300 300 36,600 1.12 400 27,500 0.84 (KΩ) Integration time ( mS ) 50 (min.) 100 (recommended) 400 (max.) In order to achieve both 60Hz and 50Hz AC rejection, the integration time needs to be adjusted to coincide with an integer multiple of the AC noise cycle times. To determine a suitable integration time, tint, that will ignore the presence of both 60Hz and 50Hz noise, users can use the formula: tint = n(1/60Hz) = m(1/50Hz), where n and m are integers. n/m = 60Hz/50Hz = 6/5. The first instance of integer values at which tint rejects both 60Hz and 50Hz is when m = 5, and n = 6, thus, tint = 6(1/60Hz) = 5(1/50Hz) = 100ms, Rext = tint * (100kΩ/100ms) = 100kΩ, (see Table 4) By populating Rext = 100kΩ, ALS-PDIC17-79NB defaults to 100ms integration time in continuous operation mode, and will reject the presence of both 60Hz and 50Hz power line signals. When working in one-time integration mode, the master must control the integration time to be an integer multiple of 100mS. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 14 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Power Supply Decoupling and Layout The power supply lines must be decoupled with capacitors, 4.7uF and 0.1uF, placed as close to the device package as possible. The bypass capacitor should have low effective series resistance (ESR) and effective series inductance (ESI), such as the common ceramic types, which provide a low impedance path to ground at high frequencies to handle transient currents caused by internal logic switching. ALS-PDIC17-79NB 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, 4.7µF and 0.1µF, placed close to the device. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 15 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Optical window dimensions In order to prevent ALS performance being affected by improper window design, some constrains on the dimensions and design of the window is as an example shown below, D2 = X = D1 tan( 90 ° − θ 2 ×2 ) ( D 3 + D1 ) tan( 90 ° − θ 2 ×2 ) θ: View Angle D1 : Distance between ALS and Windows D2 : Window’s Size D3 : Distance between light source and window X : Detection Width Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 16 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Recommended method of storage 1. Do not open moisture proof bag before devices are ready to use. 2. Shelf life in sealed bag from the bag seal date: 18 months at 10°C~30°C and < 90% RH. 3. After opening the package, the devices must be stored at 10°C~30°C and ≤ 60%RH, and used within 168 hours (floor life). 4. If the moisture absorbent material (desiccant material) has faded or unopened bag has exceeded the shelf life or devices (out of bag) have exceeded the floor life, baking treatment is required. 5. If baking is required, refer to IPC/JEDEC J-STD-033 for bake procedure or recommend the following conditions: 192 hours at 40°C +5/–0°C and < 5 % RH (reeled/tubed/loose units) or 96 hours at 60°C ± 5°C and < 5 % RH (reeled/tubed/loose units) or 24 hours at 125°C ± 5°C, not suitable for reel or tubes. Recommended Solder Profile Notice: (1) Reflow soldering should not be done more than two times. (2) When soldering, do not put stress on the devices during heating. (3) After soldering, do not warp the circuit board. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 17 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Soldering Iron Each terminal is to go to the tip of soldering iron temperature less than 350℃ for 3 seconds within once in less than the soldering iron capacity 25W. Leave two seconds and more intervals, and do soldering of each terminal. Be careful because the damage of the product is often started at the time of the hand solder. Repairing Repair should not be done after the device have been soldered. When repairing is unavoidable, a double-head soldering iron should be used (as below figure). It should be confirmed beforehand whether the characteristics of the device will or will not be damaged by repairing. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 18 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Packing Quantity Specification 2000 PCS/ 1 Reel Label Format Reel Dimensions Unit: mm Tolerance: ±0.1mm Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 19 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Tape Dimensions Unit: mm Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 20 Surface - Mount 2 I C Digital Ambient Light Sensor ALS-PDIC17-79NB/TR8 Note: 1. Above specification may be changed without notice. EVERLIGHT will reserve authority on material change for above specification. 2. When using this product, please observe the absolute maximum ratings and the instructions for using outlined in these specification sheets. EVERLIGHT assumes no responsibility for any damage resulting from use of the product which does not comply with the absolute maximum ratings and the instructions included in these specification sheets. 3. These specification sheets include materials protected under copyright of EVERLIGHT corporation. Please don’t reproduce or cause anyone to reproduce them without EVERLIGHT’s consent. Everlight Electronics Co., Ltd. Document No: DLS-xxxxxxx Rev1 http://www.everlight.com Oct. 12, 2010 21