VEML7700 www.vishay.com Vishay Semiconductors High Accuracy Ambient Light Sensor with I2C Interface FEATURES • Package type: surface mount • Package form: side view • Dimensions (L x W x H in mm): 6.8 x 2.35 x 3.0 • Integrated modules: ambient light sensor (ALS) • Supply voltage range VDD: 2.5 V to 3.6 V • Communication via I2C interface • Floor life: 72 h, MSL 4, according to J-STD-020 4 • Low shut down current consumption: typ. 0.5 μA 3 • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 2 1 AMBIENT LIGHT FUNCTION Pinning • FiltronTM technology adaption: close to real human eye response 1: SCL • O-TrimTM technology adoption: ALS output tolerance ≤ 10 % 2: VDD 3: GND • 16-bit dynamic range for ambient light detection from 0 lx to about 167 klx with resolution down to 0.005 lx/ct, supports low transmittance (dark) lens design 4: SDA DESCRIPTION VEML7700 is a high accuracy ambient light digital 16-bit resolution sensor in a miniature transparent 6.8 mm x 2.35 mm x 3.0 mm package. It includes a high sensitive photo diode, a low noise amplifier, a 16-bit A/D converter and supports an easy to use I2C bus communication interface. The ambient light result is as digital value available. • 100 Hz and 120 Hz flicker noise rejection • Excellent temperature compensation • High dynamic detection resolution • Software shutdown mode control APPLICATIONS • Ambient light sensor for backlight dimming of e.g. TV displays, smart phones, touch phones, PDA, GPS • Ambient light sensor for industrial on- / off-lighting operation • Optical switch for consumer, computing, and industrial devices and displays PRODUCT SUMMARY PART NUMBER VEML7700 OPERATING RANGE (mm) OPERATING VOLTAGE RANGE (V) I2C BUS VOLTAGE RANGE (V) AMBIENT LIGHT RANGE (lx) AMBIENT LIGHT RESOLUTION (lx) OUTPUT CODE ADC RESOLUTION PROXIMITY / AMBIENT LIGHT n/a 2.5 to 3.6 1.7 to 3.6 0 to 167 000 0.005 16 bit, I2C - / 0.005 ORDERING INFORMATION ORDERING CODE PACKAGING VOLUME (1) REMARKS VEML7700-TR Tape and reel MOQ: 2300 (MOQ is one reel) Side view VEML7700-TT Tape and reel MOQ: 2200 (MOQ is one reel) Top view Note (1) MOQ: minimum order quantity Rev. 1.0, 29-Jan-16 Document Number: 84286 1 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified) PARAMETER SYMBOL MIN. MAX. UNIT Supply voltage TEST CONDITION VDD 0 4 V Operation temperature range Tamb -25 +85 °C Storage temperature range Tstg -25 +85 °C Ptot - 50 mW Tj - 100 °C Tamb ≤ 25 °C Total power dissipation Junction temperature BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. VDD 2.5 3.3 3.6 V VDD is 3.3 V Isd - 0.5 - μA VDD is 3.3 V, PSM = 11, refresh time 4100 ms IDD - 2 - μA VDD is 3.3 V, PSM = 00, refresh time 600 ms IDD - μA VDD is 3.3 V, PSM_EN = 0, refresh time 100 ms IDD Supply voltage Shut down current (rem_2) Operation mode current (rem_2) I2C clock rate range fSCL 10 UNIT 8 - 45 - μA - 400 kHz I2C bus input H-level range VDD is 3.3 V Vih 1.3 - 3.6 V I2C bus input L-level range VDD is 3.3 V Vil - - 0.4 V Iol 3 - - mA lx/step Digital current out (low, current sink) Digital resolution (LSB count) with ALS_SM = “01” - 0.005 - Detectable minimum illuminance with ALS_SM = “01” EV min. - 0.01 - lx Detectable maximum illuminance with ALS_SM = “10” EV max. - 167 000 - lx Dark offset (rem_2) with ALS_SM = “01” - 3 - step Note • rem_1: light source: white LED rem_2: light conditions: dark CIRCUIT BLOCK DIAGRAM VEML7700 SCL 1 Temperature sensor 2 GND 3 Low pass filter Timing controller Output buffer I2C interface ALS-PD VDD Oscillator SDA 4 Fig. 1 - Block Diagram Rev. 1.0, 29-Jan-16 Document Number: 84286 2 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) 120 100 100 Normalized Responsivity Normalized Responsivity 120 VEML7700 80 60 V(λ) 40 20 80 60 40 20 0 0 400 500 600 700 800 900 1000 250 350 450 550 650 750 850 950 1050 λ - Wavelength (nm) λ - Wavelength (nm) Fig. 2 - Spectral Response Fig. 3 - White Channel Sensitivity Spectrum ALS sensitivity spectrum close to human eye photopic curve v(λ). Human eye curve adaption achieved by FiltronTM technology. 20° 1.0 0.9 40° 0.8 0.7 60° 0.6 ϕ - Angular Displacement Srel - Relative Sensitivity 0° 80° 0.5 0.4 0.3 0.2 0.1 0 22308 Fig. 4 - Relative Radiant Sensitivity vs. Angular Displacement 120 nom. -10 % nom. Reading of ALS (klx) 100 80 nom. +10 % 60 40 20 0 0 20 40 60 80 100 120 Brightness Acc. Calibrated Luxmeter (klx) Fig. 5 - ALS measurement deviation between different light sources: ≤ 10 % Rev. 1.0, 29-Jan-16 Document Number: 84286 3 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors APPLICATION INFORMATION VEML7700 is a cost effective solution of ambient light sensor with I2C bus interface. The standard serial digital interface is easy to access “Ambient Light Signal” without complex calculation and programming by external controller. 1. Application Circuit 2.5 V to 3.6 V R3 10R 10 μF 1.7 V to 3.6 V C1 C2 100 nF R1 R2 VDD (2) C1 and R3 are optional for very disturbed supply Host Micro Controller VEML7700 SDA (4) I2C bus sata SDA SCL (1) I2C bus clock SCL GND (3) Fig. 6 - Application Diagram Notes • Proposed values for the pull-up resistor R1 and R2 should be > 1 kΩ, e.g. 2.2 kΩ to 4.7 kΩ. For detailed description about set-up and use as well as more application related information see AN: “Designing VEML7700 into an Application”. 2. I2C Interface The VEML7700 contains actual six 16 bit command codes for operation control, parameter setup, and result buffering. All registers are accessible via I2C communication. Figure 7 shows the basic I2C communication with VEML7700. The built in I2C interface is compatible with I2C modes “standard” and “fast”: 10 kHz to 400 kHz. I2C H-level range = 1.3 V to 3.6 V. Please refer to the I2C specification from NXP for details. Send byte S Write command to VEML7700 Slave address Receive byte S Wr A Command code A Data byte (LSB) A Data byte (MSB) A P Read data from VEML7700 Slave address S = start condition P = stop condition A = acknowledge N = no acknowledge Wr A A Command code S Slave address Rd A Data byte (LSB) A Data byte (MSB) N P Host action VEML7700 response Fig. 7 - Send Byte / Receive Byte Protocol Register Addresses VEML7700 has actual six user accessible 16 bit command codes. The addresses are 00h to 06h (03h not defined / reserved). Device Address The VEML7700 has a fix slave address for the host programming and accessing selection. The slave address (7 bit) is set to 0010000 = 0x10. The least significant bit (LSB) defines read or write mode. According 8 bit the bus address is then 0010 0000 = 20h for write and 0010 0001 = 21h for read. Rev. 1.0, 29-Jan-16 Auto-Memorization VEML7700 can memorize the last ambient data before shutdown and keep this data before waking up. When VEML7700 is in shutdown mode, the host can freely read this data via read command directly. When VEML7700 wakes up, the data will be refreshed by new detection. Document Number: 84286 4 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors Interrupt pin not available for VEML7700 COMMAND REGISTER FORMAT COMMAND CODE REGISTER NAME BIT 00 reserved 15 : 13 Set 000b W ALS_SM 12 : 11 Sensitivity mode selection 00 = ALS sensitivity x 1 01 = ALS sensitivity x 2 10 = ALS sensitivity x (1/8) 11 = ALS sensitivity x (1/4) W reserved 10 R/W Set 0b W 9:6 ALS integration time setting 1100 = 25 ms 1000 = 50 ms 0000 = 100 ms 0001 = 200 ms 0010 = 400 ms 0011 = 800 ms W ALS_PERS 5:4 ALS persistence protect number setting 00 = 1 01 = 2 10 = 4 11 = 8 W reserved 3:2 ALS_IT Set 00b W W W ALS_INT_EN 1 ALS interrupt enable setting 0 = ALS INT disable 1 = ALS INT enable ALS_SD 0 ALS shut down setting 0 = ALS power on 1 = ALS shut down 01 ALS_WH 02 ALS_WL 03 reserved 15 : 8 ALS high threshold window setting (MSB) W 7:0 ALS high threshold window setting (LSB) W 15 : 8 ALS low threshold window setting (MSB) W W 7:0 ALS low threshold window setting (LSB) 15 : 3 set 0000 0000 0000 0b PSM 2:1 Power saving mode; see table “Refresh time” 00 = mode 1 01 = mode 2 10 = mode 3 11 = mode 4 W PSM_EN 0 Power saving mode enable setting 0 = disable 1 = enable W 15 : 8 MSB 8 bits data of whole ALS 16 bits R 7:0 LSB 8 bits data of whole ALS 16 bits R 15 : 8 MSB 8 bits data of whole WHITE 16 bits R 7:0 LSB 8 bits data of whole WHITE 16 bits R 15 ALS crossing low threshold INT trigger event R ALS_IF_H 14 ALS crossing high threshold INT trigger event R reserved 13 : 0 04 ALS 05 WHITE ALS_IF_L 06 FUNCTION / DESCRIPTION Note • Command code 0 default value is 01 = devices is shut down Rev. 1.0, 29-Jan-16 Document Number: 84286 5 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors Command Code #0: Configuration Register Register address = 00h The command code #0 is for configuration of the ambient light measurements. TABLE 1 - CONFIGURATION REGISTER #0 COMMAND CODE REGISTER NAME BIT 00 reserved 15 : 13 Set 000b W ALS_SM 12 : 11 Sensitivity mode selection 00 = ALS sensitivity x 1 01 = ALS sensitivity x 2 10 = ALS sensitivity x (1/8) 11 = ALS sensitivity x (1/4) W reserved 10 Set 0b W 9:6 W ALS_PERS 5:4 ALS persistence protect number setting 00 = 1 01 = 2 10 = 4 11 = 8 W reserved 3:2 Set 00b W W W ALS_INT_EN 1 ALS interrupt enable setting 0 = ALS INT disable 1 = ALS INT enable ALS_SD 0 ALS shut down setting 0 = ALS power on 1 = ALS shut down 01 ALS_WH 02 ALS_WL 15 : 8 ALS high threshold window setting (MSB) W 7:0 ALS high threshold window setting (LSB) W 15 : 8 ALS low threshold window setting (MSB) W W 7:0 ALS low threshold window setting (LSB) 15 : 8 MSB 8 bits data of whole ALS 16 bits R 7:0 LSB 8 bits data of whole ALS 16 bits R reserved 3:2 Set 00b R ALS_IF_L 15 ALS crossing low threshold INT trigger level R ALS_IF_H 14 ALS crossing high threshold INT trigger level R reserved 13 : 0 04 ALS 06 R/W ALS integration time setting 1100 = 25 ms 1000 = 50 ms 0000 = 100 ms 0001 = 200 ms 0010 = 400 ms 0011 = 800 ms ALS_IT 05 FUNCTION / DESCRIPTION Note • Light level [lx] is (OUTPUT DATA [dec.] / ALS sensitivity) x (10 / IT [ms]). Please study also the application note. Command Code #1: High Threshold Windows Setting Command code address = 01h. Once enable INT function and use high / low windows threshold, bit 15:0 provides 16 bit register for high bound threshold windows setting. TABLE 2 - HIGH THRESHOLD WINDOWS SETTING #1 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Description ALS high threshold window setting (15:8 MSB 8 bits of whole 16 bits) ALS high threshold window setting (7:0 LSB 8 bits of whole 16 bits) Rev. 1.0, 29-Jan-16 Document Number: 84286 6 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors Command Code #2: Low Threshold Windows Setting Command code address = 02h. Once enable INT function and use high / low windows threshold, bit 15:0 provides 16 bit register for low bound threshold windows setting. TABLE 3 - LOW THRESHOLD WINDOWS SETTING #2 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Description ALS low threshold window setting (15:8 MSB 8 bits of whole 16 bits) ALS low threshold window setting (7:0 LSB 8 bits of whole 16 bits) Command Code #3: reserved Command Code #4: ALS High Resolution Output Data Command code address = 04h. To access 16 bit high resolution ALS output, it is suitable to follow read protocol to read from command code 04 16 bits register. TABLE 4 - ALS HIGH RESOLUTION OUTPUT DATA #4 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Description ALS high resolution output data (15 : 8 MSB 8 bits of whole 16 bits) ALS high resolution output data (7 : 0 LSB 8 bits of whole 16 bits) Command Code #5: White Channel Output Data Command code address = 05h. To access 16 bit WHITE output, it is suitable to follow read protocol to read from command code 05 16 bits register. TABLE 5 - WHITE CHANNEL OUTPUT DATA #5 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Description WHITE output data (15 : 8 MSB 8 bits of whole 16 bits) WHITE output data (7 : 0 LSB 8 bits of whole 16 bits) Command Code #6: Interrupt Status Command code address = 06h. Bit 15 defines interrupt flag while trigger occurred due to data crossing low threshold windows. Bit 14 defines interrupt flag while trigger occurred due to data crossing high threshold windows. TABLE 6 - INTERRUPT STATUS #6 Bit 15 Bit 14 int_th_low int_th_high Bit 13 to 0 reserved Description int_th_low R bit. Indicated a low threshold exceed int_th_high R bit. Indicated a high threshold exceed Rev. 1.0, 29-Jan-16 Document Number: 84286 7 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors REFRESH TIME DETERMINATION OF PSM VEML7700’s refresh time can be determined by PSM and ALS_IT setting in power saving mode (PSM). Cooperating with the command register setting, the designer has a flexible method in defining the timing, power consumption, and sensitivity for light data collection. REFRESH TIME, IDD, AND SENSITIVITY RELATION ALS_SM 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 PSM 00 01 10 11 00 01 10 11 00 01 10 11 00 01 10 11 ALS_IT 0000 0000 0000 0000 0001 0001 0001 0001 0010 0010 0010 0010 0011 0011 0011 0011 REFRESH TIME (ms) 600 1100 2100 4100 700 1200 2200 4200 900 1400 2400 4400 1300 1800 2800 4800 IDD (μA) 8 5 3 2 13 8 5 3 20 13 8 5 28 20 13 8 SENSITIVITY (lx/bit) 0.042 0.042 0.042 0.042 0.021 0.021 0.021 0.021 0.010 0.010 0.010 0.010 0.005 0.005 0.005 0.005 PACKAGE DIMENSIONS in millimeters Rev. 1.0, 29-Jan-16 Document Number: 84286 8 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors 3.6 0.3 TAPING SIDE VIEW (-TR VERSION) in millimeters 16 1.75 7.5 Ø 1.5 4 Direction of feed 8 2 Ø 1.5 Drawing-No.: 9.700-5342.01-4 Issue: 2; 12.06.13 Rev. 1.0, 29-Jan-16 technical drawings according to DIN specifications Document Number: 84286 9 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors TAPING TOP VIEW (-TT VERSION) in millimeters 0.3 2.7 4° 7.1 16 7.5 3.3 4° 1.75 Ø 1.5 Direction of feed 4 8 2 Ø 1.5 min. technical drawings according to DIN specifications Drawing-No.: 9.700-5341.01-4 Issue: 2: 23.03.09 21666 Rev. 1.0, 29-Jan-16 Document Number: 84286 10 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors REEL DIMENSIONS in millimeters 16734 LEADER AND TRAILER DIMENSIONS in millimeters Trailer no devices Leader devices no devices End Start min. 200 min. 400 96 11818 Rev. 1.0, 29-Jan-16 Document Number: 84286 11 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VEML7700 www.vishay.com Vishay Semiconductors REFLOW SOLDER PROFILE DRYPACK 300 Temperature (°C) max. 260 °C 245 °C 255 °C 240 °C 217 °C 250 FLOOR LIFE 200 max. 30 s Floor life (time between soldering and removing from MBB) must not exceed the time indicated on MBB label: 150 max. 100 s max. 120 s Floor life: 72 h 100 max. ramp down 6 °C/s 50 max. ramp up 3 °C/s 0 50 100 150 200 250 300 Time (s) Fig. 8 - Lead (Pb)-free Reflow Solder Profile according to J-STD-020 Rev. 1.0, 29-Jan-16 Conditions: Tamb < 30 °C, RH < 60 % Moisture sensitivity level 4, according to J-STD-020. 0 19841 Devices are packed in moisture barrier bags (MBB) to prevent the products from moisture absorption during transportation and storage. Each bag contains a desiccant. DRYING In case of moisture absorption devices should be baked before soldering. Conditions see J-STD-020 or label. Devices taped on reel dry using recommended conditions 192 h at 40 °C (+ 5 °C), RH < 5 %. Document Number: 84286 12 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. 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