Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 Features Ambient light sensing • • • • • Maximum detectable illumination up to 57671Lux Maximum resolution 0.01375Lux/count Human eye type spectral response (IR rejection) 16-bit effective resolution Provides an output count proportional to ambient light over the full operating range Proximity sensing • • • • • • • IR LED driver current can be selected between 100mA and 200mA 8-bit effective resolution Storage temperature range from -40°C to 85°C Operating temperature range from -40°C to 85°C Operating voltage range: 2.5V ~ 3.6V Size: 2.1mm (L) x 2.0mm (W) x 0.6mm (H) RoHS compliant and Pb Free package Description The APS-16D25-11-DF8/TR8 is a digital-output ambient light sensor with built-in IR driver and I2C interface. The APS-16D25-11-DF8/TR8 has signal processing circuit on a CMOS integrated circuit to provide light measurements over an effective 16bit dynamic range with a response similar to that of human eye. The APS-16D25-11-DF8/TR8 uses user-selected modulation frequency to drive the external IR LED and employ a noise cancellation scheme to highly reject unwanted IR noise. The APS-16D25-11-DF8/TR8 has excellent temperature compensation, robust refresh rate setting without any external RC low-pass filter. Connected with an infrared LED (IR-LED), the built-in proximity sensor can reveal the closeness of approaching/departing objects. This device is intended primarily for use in applications in which measurement of ambient light and proximity sensing is a necessary, such as laptop computers, PDA, camcorders, mobile phone, smart phone. 1 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 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 Mobile phone, Smart phone, PDA, Table PC. Package Dimensions Unit: mm Tolerances: ± 0.2mm 2 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 PCB Soldering PAD Pin Description Pin No. Pin name 1 2 3 4 5 6 7 ARDR VDD GND NC SCL SDA INT 8 IRDR 3 2 Pin function I C address pin. High level: 0xB0; Low level: 0x90 Power supply voltage: 2.5V 3.6V Ground: The thermal pad is also connected to the GND pin No connected 2 I C serial clock line 2 I C serial data line Interrupt pin: LO for interrupt alarming. The INT pin is an open drain IR-LED driver pin connecting to the cathode of the external IR-LED. The 2 source current of the IR-LED driver can be programmed through I C ～ Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 Block Diagram Person or Object IR-LED Light VDD PD for ALS VDD PD for PS IR-LED LED Driver IRDR ADC SDA SCL I2C Interface Oscillator T-Con REF ADDR INT Interrupt GND Figure 1. APS-16D25-11-DF8/TR8 Block Diagram Typical Application Circuit ～3.6V 2.5V 10k 10k 1uF 10k VDD SCL MCU IRDR SDA INT ADDR GND ： ： PULL LOW 0X90 PULL HIGH 0XB0 Figure 2. 4 APS-16D25-11-DF8/TR8 Typical Application Circuit Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 Absolute Maximum Ratings Parameter Supply voltage Operation temperature Storage temperature Symbol Min. VDD Ta Ts -0.3 -40 -40 Typ. － － － Max. Unit 5.5 85 85 V °C °C Recommended Operating Conditions Parameter Supply voltage 2 Clock frequency of I C Operation temperature Symbol Min. Typ. Max. Unit VDD fI2C Ta 2.5 2.8 3.6 400 85 V kHz °C － -40 － － Electrical and Optical Characteristics (Ta=25℃ ℃ , Vop=3.3 V) Parameter SYB Test Conditions Supply current IDD Note 1 Shutdown current ISD Note 2 Full scale ADC code for ALS ALS_FS 16-bit effective resolution Dark output count for ALS ALS_0 E=0Lux ALS count output with E=300Lux, White LED ALS_1 0.11Lux/count Range1(7209 Lux) ALS count output with E=300Lux, White LED ALS_2 0.22Lux/count Range2(14418 Lux) ALS count output with E=300Lux, White LED ALS_3 0.44Lux/count Range3(28836 Lux) ALS count output with E=300Lux, White LED ALS_4 0.88Lux/count Range4(57671 Lux) Full scale ADC code for PS PS_FS 8-bit effective resolution Dark output count for PS PS_0 E=0Lux PS count output PS_1 Ee=200uW/cm2, Note 3 Peak sensitivity wavelength for ALS λp1 Note 2 Peak sensitivity wavelength for PS λp2 Note 2 2 Logic high, I C VIH Note 2 Logic low, I2C VIL Note 2 Min. Typ. 90 1 Unit μA μA 65535 Counts 3 Counts 2318 2727 3136 Counts 1158 1363 1567 Counts 578 681 784 Counts 289 341 392 Counts 255 3 115 Counts Counts Counts nm nm V V 85 1.5 100 550 850 Max. VDD 0.4 Note: 1. Power supply (VDD) is 3.3V, and 01h=0x00, 09h=0x00 without the IR-LED. 2. Power supply (VDD) is 3.3V, halogen lamp light source and room temperature is 25 3. The light source of IR-LED that the peak wavelength is 850nm. 5 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 ℃. www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 Timing Chart Principle of Operation Digital Interface The APS-16D25-11-DF8/TR8 contains an eight 8-bit registers accessed via the I2C bus. All operations can be controlled by the command register. The sample command structure makes the user easy to program the operation setting and latch the light data from the APS-16D25-11-DF8/TR8. In timing chart, it is the APS-16D25-11-DF8/TR8 command format description for reading and writing operation between the host and the APS-16D25-11-DF8/TR8. Slave Address The APS-16D25-11-DF8/TR8 provides the slave address selection function for the system design convenience. The address can be defined by ADDR pin via high, and low voltage. In following table, it describes the slave address selection method and the cooperation with the command setting. ADDR ID Address Command Address Operation PULL LOW 0x90 0x90 Write Command to APS-16D25-11-DF8/TR8 0x91 Read Data from APS-16D25-11-DF8/TR8 PULL HIGH 0xB0 0xB0 Write Command to APS-16D25-11-DF8/TR8 0xB1 Read Data from APS-16D25-11-DF8/TR8 6 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 Function Description In the following table, there are 12 registers that are available in the APS-16D25-11-DF8/TR8. The APS-16D25-11-DF8/TR8 has 16-bit resolution for ALS. The host first reads the data from the 0x02 register data and then reads the 0x03 register data to complete the word mode data collection. The APS-16D25-11-DF8/TR8 has 8-bit resolution for PS. The PS data register is in the register 0x0A. The following table summarizes their function. REG BIT ADDR Default NAME 7 6 5 4 3 2 1 0 ALS GAIN1_ GAIN0_ 0 0 IT1_AL IT0_AL INT_AL SD_AL 01h 01h CMD ALS ALS S S S S ALS DT15_A DT14_A DT13_A DT12_A DT11_A DT10_A DT9_AL DT8_AL 02h 00h DT1 LS LS LS LS LS LS S S ALS DT7_AL DT6_AL DT5_AL DT4_AL DT3_AL DT2_AL DT1_AL DT0_AL 03h 00h DT2 S S S S S S S S ALS THDH1 THDH1 THDH1 THDH1 THDH1 THDH1 THDH9 THDH8 04h FFh THDH1 5_ALS 4_ALS 3_ALS 2_ALS 1_ALS 0_ALS _ALS _ALS ALS THDH7 THDH6 THDH5 THDH4 THDH3 THDH2 THDH1 THDH0 05h FFh THDH2 _ALS _ALS _ALS _ALS _ALS _ALS _ALS _ALS ALS THDL1 THDL1 THDL1 THDL1 THDL1 THDL1 THDL9 THDL8 06h 00h THDL1 5_ALS 4_ALS 3_ALS 2_ALS 1_ALS 0_ALS _ALS _ALS ALS THDL7 THDL6 THDL5 THDL4 THDL3 THDL2 THDL1 THDL0 07h 00h THDL2 _ALS _ALS _ALS _ALS _ALS _ALS _ALS _ALS STA ID1 ID0 FLG_P FLG_A 0 0 0 0 08h 00h TUS S LS PS INT_CT SLP1_P SLP0_P IRDR_P IT1_PS IT0_PS INT_PS SD_PS 09h 01h CMD RL S S S PS DT DT7_P DT6_P DT5_P DT4_P DT3_P DT2_P DT1_P DT0_P 0Ah 00h S S S S S S S S PS THDH7 THDH6 THDH5 THDH4 THDH3 THDH2 THDH1 THDH0 0Bh FFh THDH _PS _PS _PS _PS _PS _PS _PS _PS PS THDL7 THDL6 THDL5 THDL4 THDL3 THDL2 THDL1 THDL0 0Ch 00h THDL _PS _PS _PS _PS _PS _PS _PS _PS 7 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 ALS Command Register (01 hex) 1. GAIN_ALS: Bits 7 and 6. The Gain setting for sensitivity range selection of ALS can be adjusted via I2C. The following table lists the possible values of GAIN_ALS. BITS 7:6 MAX DETECT RANGE LUX/LSB 00 57671 0.88 01 28836 0.44 10 14418 0.22 11 7209 0.11 2. IT_ALS: Bits 3 and 2. The APS-16D25-11-DF8/TR8 fundamental refresh timing of ALS can be tuned by IT_ALS. To cooperate with the ALS command register, (IT1_ALS :IT0_ALS), the designer has a very wide rang and flexible way to choose a refresh time for the system programming demand. In following table, the APS-16D25-11-DF8/TR8 fundamental refresh timing, (IT1_ALS:IT0_ALS) (0 : 0) =x1, is 1T, i.e. 100ms. The other related refresh timing in the table are all changed by comparing with the fundamental timing. As the example in following table, it is below showing the timing table that the system designer can have a flexible way for choosing the desired fresh timing to. REFRESH TIMING TABLE for ALS BITS 3:2 RELATIVE REFRESH TIMING (Example) 00 1T 100ms 01 2T 200ms 10 4T 400ms 11 8T 800ms → Comparison Table for ALS (Sensitivity Range V.S Refresh Timing) Relative Refresh Timing Bits 3:2 ALS function 00 01 10 1T (100ms) 2T (200ms) 4T (400ms) Max. Lux/ Max. Lux/ Max. Lux/ Bits 7:6 Lux LSB Lux LSB Lux LSB 00 56761 0.88 28836 0.44 14418 0.22 Detection Range 01 28836 0.44 14418 0.22 7209 0.11 10 14418 0.22 7209 0.11 3604 0.055 11 7209 0.11 3604 0.055 1802 0.0275 11 8T (800ms) Max. Lux/ Lux LSB 7209 0.11 3604 0.055 1802 0.0275 901 0.01375 3. INT_ALS: Bit 1. INT_ALS = 0, disable ALS interrupt. INT_ALS = 1, enable ALS interrupt. BIT 1 OPERATION 0 ALS INT Disable 1 ALS INT Enable (Default) 4. SD_ALS: Bit 0. SD_ALS = 0, enable ALS. SD_ALS = 1, disable ALS. BIT 0 OPERATION 0 ALS SD Enable 1 ALS SD Disable 8 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 ALS Data Register (02 hex and 03 hex) The APS-16D25-11-DF8/TR8 has two 8-bit read-only registers to hold the data from LSB to MSB for ADC of ALS. The most significant bit (MSB) is accessed at 02 hex, and the least significant bit (LSB) is accessed at 03 hex. For 16-bit resolution, the data is from DT0_ALS to DT15_ALS. The registers are refreshed after every conversion cycle. ALS Threshold Register (04, 05, 06 and 07 hex) An ALS interrupt event (FLG_ALS) is governed by the high and low thresholds in register 04, 05, 06, and 07hex (ALS_THDH1, ALS_THDH2, ALS_THDL1, and ALSTHDL2). The user write a high and low threshold value to these registers and the APS-16D25-11-DF8/TR8 will issue an ALS interrupt flag if the actual count stored in registers 02hex and 03hex are outside the user’s programmed window. The user must write 0 to clear FLG_ALS. Status Register (08 hex) 1. ID number; Bits 7 and 6. The ID number is 0b00 for APS-16D25-11-DF8/TR8. This registers is read only. 2. PS Interrupt flag; Bit 5. This is the status bit of the interrupt for PS. The bit is set to logic high when the interrupt thresholds have been triggered, and logic low when not yet triggered. Once triggered, INT pin stays low and the status bit stays high. Both interrupt pin and the status bit are cleared by writing “0”. BIT 5 OPERATION 0 Interrupt is cleared or not triggered yet 1 Interrupt is triggered 3. ALS Interrupt flag; Bit 4. This is the status bit of the interrupt for ALS. The bit is set to logic high when the interrupt thresholds have been triggered, and logic low when not yet triggered. Once triggered, INT pin stays low and the status bit stays high. Both interrupt pin and the status bit are cleared by writing “0”. BIT 4 OPERATION 0 Interrupt is cleared or not triggered yet 1 Interrupt is triggered PS Command Register (09 hex) 1. Interrupt Control; Bit 7. This bit is used to control the interrupt mode. BIT 7 OPERATION 0 Set /INT pin low if FLG_ALS or FLG_PS high (logical OR) 1 Set /INT pin low if FLG_ALS and FLG_PS high (logical AND) 2. PS sleep time: Bits 6, and 5. The proximity sleep time between IR LED pulses can be adjusted via I2C. The following table lists the possible values of SLP_PS. BIT 6:5 PROXIMITY SLEEP TIME 00 10ms; sleep time between IR LED pulses is 10ms 01 30ms; sleep time between IR LED pulses is 30ms 10 90ms; sleep time between IR LED pulses is 90ms 11 270ms; sleep time between IR LED pulses is 270ms 9 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 3. Amplitude of IR sink current: Bit 4. This device provides current source to sink an external IR LED. The sink current can be programmed through IRDR_PS. BIT 4 IRDR PIN SINK CURRENT 0 100mA current sink 1 200mA current sink 4. IT_PS: Bits 3 and 2. The APS-16D25-11-DF8/TR8 fundamental refresh timing of PS can be tuned by IT_PS. To cooperate with the PS command register, (IT1_PS :IT0_PS), the designer has a very wide rang and flexible way to choose a refresh time for the system programming demand. In following table, APS-16D25-11-DF8/TR8 fundamental refresh timing, (IT1_PS : IT0_PS) (0 : 0) =x1, is 1T, i.e. 0.2ms. The other related refresh timing in the table are all changed by comparing with the fundamental timing. As the example in following table, it is below showing the timing table that the system designer can have a flexible way for choosing the desired fresh timing to APS-16D25-11-DF8/TR8. REFRESH TIMING TABLE for PS BITS 3:2 RELATIVE REFRESH TIMING (Example) 00 1T 0.2ms 01 1.5T 0.3ms 10 2T 0.4ms 11 2.5T 0.5ms → 5. INT_PS: Bit 1. INT_PS = 0, disable PS interrupt. INT_PS = 1, enable PS interrupt. BIT 1 OPERATION 0 PS INT Disable 1 PS INT Enable 6. SD_PS: Bit 0. SD_PS = 0, enable PS. SD_PS = 1, disable PS. BIT 0 OPERATION 0 PS SD Enable 1 PS SD Disable PS Data Register (0A hex) The APS-16D25-11-DF8/TR8 has 8-bit read-only registers to hold the data for ADC of PS. The registers are refreshed after every conversion cycle. PS Threshold Register (0B and 0C hex) A proximity interrupt event (FLG_PS) is governed by the high and low thresholds in register 0Bhex and 0Chex respectively. The user write a high and low threshold value to these registers and the APS-16D25-11-DF8/TR8 will issue an PS interrupt flag if the actual count stored in registers 0Ahex are outside the user’s programmed window. The user must write 0 to clear FLG_PS. If the interrupt occurs due to near side (high threshold) and FLG_PS is clear by host, then interrupt will never occur again unless the device moves to far side (low threshold), and vice versa. 10 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 Spectral Response Distance Detection for PS 11 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 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. 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. 12 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/TR8 Packing Quantity Specification 2000 PCS/ 1 Reel Label Format Reel Dimensions Unit: mm Tolerances: ± 0.1mm 13 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com DATASHEET Ambient Light Sensor and Proximity Sensor with I2C Interface APS-16D25-11-DF8/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. Do not directly touch device. 4. These specification sheets include materials protected under copyright of EVERLIGHT’s corporation. Please don’t reproduce or cause anyone to reproduce them without EVERLIGHT’s consent. 14 Copyright © 2010, Everlight All Rights Reserved. Release Date : Apr.02.2012. Issue No: DPS-0000001 Rev1.0 www.everlight.com