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VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 1 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 high accuracy ambient light sensor with i 2 c interface pinning 1: scl 2: v dd 3: gnd 4: sda description VEML7700 is a high accuracy ambient light digital 16-bit resolution sensor in a miniature transparent 6.8 mm x 3.0 mm x 2.5 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 i 2 c bus communication interface. the ambient light result is as digital value available. features ? package type: surface mount ? package form: side view ? dimensions (l x w x h in mm): 6.8 x 2.35 x 3 ? integrated modules: ambient light sensor (als) ? supply voltage range v dd : 2.5 v to 3.6 v ? communication via i 2 c interface ? floor life: 72 h, msl 4, according to j-std-020 ? low shut down current consumption: typ. 0.5 a ? material categorization: fo r definitions of compliance please see www.vishay.com/doc?99912 ambient light function ?filtron tm technology adaption: close to real human eye response ?o-trim tm technology adoption: als output tolerance 10 % ? 16-bit dynamic range for a mbient light detection from 0 lx to about 167 klx with reso lution down to 0.005 lx/ct, supports low transmitta nce (dark) lens design ? 100 hz and 120 hz flicker noise rejection ? excellent tempera ture 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 note (1) moq: minimum order quantity 1 4 3 2 1 4 3 2 product summary part number operating range (mm) operating voltage range (v) i 2 c bus voltage range (v) ambient light range (lx) ambient light resolution (lx) output code adc resolution proximity / ambient light VEML7700 n/a 2.5 to 3.6 1.7 to 3.6 0 to 167 000 0.005 16 bit, i 2 c - / 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
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 2 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 note ? rem_1: light source: white led rem_2: light conditions: dark circuit block diagram fig. 1 - block diagram absolute maximum ratings (t amb = 25 c, unless otherwise specified) parameter test condition symbol min. max. unit supply voltage v dd 04v operation temperature range t amb -25 +85 c storage temperature range t stg -25 +85 c total power dissipation t amb 25 c p tot -50mw junction temperature t j - 100 c basic characteristics (t amb = 25 c, unless otherwise specified) parameter test conditio n symbol min. typ. max. unit supply voltage v dd 2.5 3.3 3.6 v shut down current (rem_2) v dd is 3.3 v i sd -0.5-a operation mode current (rem_2) v dd is 3.3 v, psm = 11, refresh time 4100 ms i dd -2-a v dd is 3.3 v, psm = 00, refresh time 600 ms i dd -8-a v dd is 3.3 v, psm_en = 0, refresh time 100 ms i dd 45 - a i 2 c clock rate range f scl 10 - 400 khz i 2 c bus input h-level range v dd is 3.3 v v ih 1.3 - 3.6 v i 2 c bus input l-level range v dd is 3.3 v v il --0.4v digital current out (low, current sink) i ol 3-?ma digital resolution (l sb count) with als_sm = 01 - 0.005 - lx/step detectable minimum illuminance with als_sm = 01 e v min. -0.01- lx detectable maximum illumi nance with als_sm = 10 e v max. - 167 000 - lx dark offset (rem_2) with als_sm = 01 - 3 - step 1 2 3 v dd s cl 4 g nd VEML7700 o s cillator al s -pd output buffer i 2 c interface timing controller temperature s en s or low pa ss filter s da
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 3 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 basic characteristics (t amb = 25 c, unless otherwise specified) fig. 2 - spectral response fig. 3 - white channel sensitivity spectrum als sensitivity spectrum close to human eye photopic curve v( ). human eye curve adaption achieved by filtron tm technology. fig. 4 - relative radiant sensitivity vs. angular displacement fig. 5 - als measurement deviation between different light sources: 10 % 0 20 40 60 80 100 120 400 500 600 700 800 900 1000 - wavelength (nm) normalized re s pon s ivity v( ) VEML7700 0 20 40 60 80 100 120 250 350 450 550 650 750 850 950 1050 normalized re s pon s ivity - wavelength (nm) 0 20 40 60 80 0.6 0.7 0.8 0.9 1.0 0 0.1 0.2 0.3 0.4 0.5 s rel - relative s en s itivity 22308 ? - angular displacement nom. 0 20 100 120 0 20406080100120 reading of al s (klx) brightne ss acc. calibrated luxmeter (klx) 80 60 40 nom. -10 % nom. +10 %
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 4 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 application information VEML7700 is a cost effective solution of ambient light sensor with i 2 c bus interface. the standard se rial digital in terface is easy to access ambient light signal without complex ca lculation and programming by external controller. 1. application circuit fig. 6 - application diagram notes ? proposed values for the pull-up resistor r1 and r2 should be > 1 k , e.g. 2.2 k to 4.7 k . for detailed descri ption about set-up and use as well as more applicatio n related information see an : designing VEML7700 into an application. 2. i 2 c interface the VEML7700 contains actual six 16 bit command codes for oper ation control, parameter setup, and result buffering. all registers are accessible via i 2 c communication. figure 7 shows the basic i 2 c communication with VEML7700. the built in i 2 c interface is compatible with i 2 c modes standard and fast: 10 khz to 400 khz. i 2 c h-level range = 1.3 v to 3.6 v. please refer to the i 2 c specification from nxp for details. 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. auto-memorization VEML7700 can memorize the la st 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. host micro controller i 2 c bu s s ata s da i 2 c bu s clock s cl VEML7700 s da (4) s cl (1) g nd (3) v dd (2) c2 c1 r3 100 nf 10 f 10r 2.5 v to 3.6 v 1.7 v to 3.6 v r2 r1 c1 and r3 are optional for very di s turbed s upply receive byte read data from VEML7700 s end byte write command to VEML7700 ho s t action VEML7700 re s pon s e ss lave addre ss a command code a wr data byte (l s b) a p data byte (m s b) a ss lave addre ss a command code a data byte (l s b) a p data byte (m s b) n wr ss lave addre ss rd a s = s tart condition p = s top condition a = acknowledge n = no acknowledge
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 5 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 interrupt pin not av ailable for VEML7700 note ? command code 0 default value is 01 = devices is shut down command register format command code register name bit function / description r / w 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 als_it 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 pr otect number setting 00 = 1 01 = 2 10 = 4 11 = 8 w reserved 3 : 2 set 00b w als_int_en 1 als interrupt enable setting 0 = als int disable 1 = als int enable w als_sd 0 als shut down setting 0 = als power on 1 = als shut down w 01 als_wh 15 : 8 als high threshold window setting (msb) w 7 : 0 als high threshold window setting (lsb) w 02 als_wl 15 : 8 als low threshold window setting (msb) w 7 : 0 als low threshold window setting (lsb) w 03 reserved 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 04 als 15 : 8 msb 8 bits data of whole als 16 bits r 7 : 0 lsb 8 bits data of whole als 16 bits r 05 white 15 : 8 msb 8 bits data of whole white 16 bits r 7 : 0 lsb 8 bits data of whole white 16 bits r 06 als_if_l 15 als crossing low threshold int trigger event r als_if_h 14 als crossing high threshold int trigger event r reserved 13 : 0
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 6 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 command code #0: co nfiguration register register address = 00h the command code #0 is for configurat ion of the ambient light measurements. 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 hi gh / low windows threshold, bi t 15:0 provides 16 bit register for high bound thresh old windows setting. table 1 - configuration register #0 command code register name bit function / description r / w 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 als_it 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 pr otect number setting 00 = 1 01 = 2 10 = 4 11 = 8 w reserved 3 : 2 set 00b w als_int_en 1 als interrupt enable setting 0 = als int disable 1 = als int enable w als_sd 0 als shut down setting 0 = als power on 1 = als shut down w 01 als_wh 15 : 8 als high threshold window setting (msb) w 7 : 0 als high threshold window setting (lsb) w 02 als_wl 15 : 8 als low threshold window setting (msb) w 7 : 0 als low threshold window setting (lsb) w 04 als 15 : 8 msb 8 bits data of whole als 16 bits r 7 : 0 lsb 8 bits data of whole als 16 bits r 05 reserved 3 : 2 set 00b r 06 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 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)
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 7 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 command code #2: low threshold windows setting command code address = 02h. once enable int function and use hi gh / low windows threshold, bi t 15:0 provides 16 bit register for low bound thresh old windows setting. command code #3: reserved command code #4: als high resolution output data command code address = 04h. to access 16 bit high resolution als ou tput, it is suitable to follow read protocol to read from command code 04 16 bits register. 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. command code #6: interrupt status command code address = 06h. bit 15 defines interrupt flag whil e trigger occurred due to data cr ossing low threshold windows. bit 14 defines interrupt flag whil e trigger occurred due to data cr ossing high threshold windows. 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 (1 5:8 msb 8 bits of whole 16 bits) als low threshold window setting (7 :0 lsb 8 bits of whole 16 bits) 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 outp ut data (7 : 0 lsb 8 bits of whole 16 bits) 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 ls b 8 bits of whole 16 bits) table 6 - interrupt status #6 bit 15 bit 14 bit 13 to 0 int_th_low int_th_high reserved description int_th_low r bit. indicated a low threshold exceed int_th_high r bit. indicate d a high threshold exceed
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 8 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 refresh time determination of psm VEML7700s 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 cons umption, and sensitivity for lig ht data collection. package dimensions in millimeters refresh time, i dd , and sensitivity relation als_sm psm als_it refresh time (ms) i dd (a) sensitivity (lx/bit) 01 00 0000 600 8 0.042 01 01 0000 1100 5 0.042 01 10 0000 2100 3 0.042 01 11 0000 4100 2 0.042 01 00 0001 700 13 0.021 01 01 0001 1200 8 0.021 01 10 0001 2200 5 0.021 01 11 0001 4200 3 0.021 01 00 0010 900 20 0.010 01 01 0010 1400 13 0.010 01 10 0010 2400 8 0.010 01 11 0010 4400 5 0.010 01 00 0011 1300 28 0.005 01 01 0011 1800 20 0.005 01 10 0011 2800 13 0.005 01 11 0011 4800 8 0.005
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 9 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 taping side view (-tr version) in millimeters 2 1.75 7.5 16 8 4 3.6 0.3 ? 1.5 ? 1.5 drawing-no.: 9.700-5342.01-4 i ss ue: 2; 12.06.13 technical drawing s according to din s pecification s direction of feed
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 10 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 taping top view (-tt version) in millimeters 21666 specifications according to din technical drawings drawing-no.: 9.700-5341.01-4 issue: 2: 23.03.09 2 1.75 7.5 16 8 4 7.1 2.7 0.3 3.3 ? 1.5 min. ? 1.5 direction of feed 4 4
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 11 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 reel dimensions in millimeters leader and trailer dimensions in millimeters 16734 trailer leader no devices min. 200 min. 400 start end devices 96 11818 no devices
VEML7700 www.vishay.com vishay semiconductors rev. 1.0, 19-nov-15 12 document number: 84286 for technical questions, contact: sensorstechsupport@vishay.com 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 reflow solder profile fig. 8 - lead (pb)-free reflow solder profile according to j-std-020 drypack devices are packed in moistu re barrier bags (mbb) to prevent the products from mo isture absorption during transportation and storage. each bag contains a desiccant. floor life floor life (time between soldering and removing from mbb) must not exceed the time indicated on mbb label: floor life: 72 h conditions: t amb < 30 c, rh < 60 % moisture sensitivity level 4, according to j-std-020. drying in case of moisture absorpt ion devices should be baked before soldering. conditions see j-std-020 or label. devices taped on reel dry us ing recommended conditions 192 h at 40 c (+ 5 c), rh < 5 %. 0 50 100 150 200 250 300 0 50 100 150 200 250 300 time (s) temperature (c) 240 c 245 c max. 260 c max. 120 s max. 100 s 217 c max. 30 s max. ramp up 3 c/s max. ramp down 6 c/s 19841 255 c

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