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VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 1 document number: 84177 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 fully integrated proximity and ambient light sensor with infrared emitter, i 2 c interface, and interrupt function description the VCNL4020X01 is a fully integrated proximity and ambient light sensor. fully integrated means that the infrared emitter is included in the package. it has 16 bit resolution. it includes a signal processing ic and features standard i 2 c communication interface. it features an interrupt function. applications ? proximity sensor for: - mobile devices (e.g. smart phones, touch phones, pdas, gps) for touch screen locking, power saving etc. - automotive for presence detection ? integrated ambient light function for display / keypad contrast control and dimming of mobile devices ? rear view mirror dimming in automotive ? proximity / optical switch for consumer, computing, automotive and industrial devices, and displays (like notebooks, tablet pcs, an d automotive touch panels) ? dimming control for consumer , computing, industrial, and automotive displays features ? package type: surface mount ? dimensions (l x w x h in mm): 4.90 x 2.40 x 0.83 ? aec-q101 qualified ? integrated modules: infrared emitter (ired), ambient light sensor (als-pd), proximity sensor (pd), and signal conditioning ic ? interrupt function ? supply voltage range v dd : 2.5 v to 3.6 v ? supply voltage range ir anode: 2.5 v to 5 v ? communication via i 2 c interface ?i 2 c bus h-level range: 1.7 v to 5 v ? floor life: 168 h, msl 3, according to j-std-020 ? low stand by current consumption: 1.5 a ? material categorization: fo r definitions of compliance please see www.vishay.com/doc?99912 proximity function ? built-in infrared emitter and photo-pin-diode for proximity function ? 16 bit effective resolution for proximity detection range ensures excellent cross talk immunity ? programmable led drive current from 10 ma to 200 ma in 10 ma steps ? excellent ambient light suppre ssion by signal modulation ? proximity distance up to 200 mm ambient light function ? built-in ambient light photo-pin-diode with close-to- human-eye sensitivity ? 16 bit dynamic range from 0.25 lx to 16 klx ? 100 hz and 120 hz flicker noise rejection note (1) adjustable through i 2 c interface 7 nc 6 nc 9 g nd 8 g nd 10 ir cathode ir anode 1 s da 2 int 3 s cl 4 v dd 5 22620 product summary part number operating range (mm) operating voltage range (v) i 2 c bus voltage range (v) led pulse current (1) (ma) ambient light range (lx) ambient light resolution (lx) output code adc resolution proximity / ambient light VCNL4020X01 1 to 200 2.5 to 3.6 1.7 to 5 10 to 200 0.25 to 16 383 0.25 16 bit, i 2 c 16 bit / 16 bit
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 2 document number: 84177 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 notes (1) moq: minimum order quantity (2) a sensor starter kit is available, along with an add-on demo board fo r each of the sensors. please visit www.vishay.com/moreinfo/vcnldemokit/ for more information. contact any catalog distributor or a local vishay sales repr esentative to purcha se the sensor star ter kit and contact sensorstechsupport@vishay.com to receive an a dd-on sensor board. ordering information ordering code packaging volume (1) remarks VCNL4020X01-gs08 tape and reel moq: 3300 pcs 4.90 mm x 2.40 mm x 0.83 mm VCNL4020X01-gs18 moq: 13 000 pcs sensor starter kit (2) - moq: 1 pc - absolute maximum ratings (t amb = 25 c, unless otherwise specified) parameter test condition symbol min. max. unit supply voltage v dd -0.3 5.5 v operation temperature range t amb -40 +105 c storage temperature range t stg -40 +105 c total power dissipation t amb 25 c p tot 50 mw junction temperature t j 105 c basic characteristics (t amb = 25 c, unless otherwise specified) parameter test condition symbol min. typ. max. unit supply voltage v dd 2.5 3.6 v supply voltage ir anode 2.5 5 v i 2 c bus h-level range 1.7 5 v int h-level range 1.7 5 v int low voltage 3 ma sink current 0.4 v current consumption standby current, no ired-operation 1.5 2 a current consumption proximity mode incl. ired (averaged) 2 measurements per second, ired current 20 ma 5a 250 measurements per second, ired current 20 ma 520 a 2 measurements per second, ired current 200 ma 35 a 250 measurements per second, ired current 200 ma 4ma current consumption ambient light mode 2 measurements per second averaging = 1 2.5 a 8 measurements per second averaging = 1 10 a 2 measurements per second averaging = 64 160 a 8 measurements per second averaging = 64 640 a ambient light resoluti on digital resolution (lsb count) 0.25 lx ambient light output e v = 100 lx averaging = 64 400 counts i 2 c clock rate range f scl 3400 khz
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 3 document number: 84177 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 circuit block diagram note ? nc must not be electrically connected pads 6 and 7 are only considered as solder pads test circuit basic characteristics (t amb = 25 c, unless otherwise specified) fig. 1 - idle current vs. ambient temperature fig. 2 - idle current vs. v dd fig. 3 - proximity value vs. distance fig. 4 - forward current vs. temperature 22621 10 ir cathode 9 g nd 8 g nd 6 nc 7 nc ir anode 1 s da 2 int 3 s cl 4 v dd 5 ired vcnl 4020 a s ic ambi pd proxi pd d = 20 mm kodak gray card (18 % reflectivity) VCNL4020X01 ired 30 mm x 30 mm proxi-pd 2.8 1.0 1.2 1.4 1.8 1.6 2.0 2.2 100 -75 -50 050 -25 25 75 i dd - s upply current idle mode (a) t amb - ambient temperature (c) 2.6 2.4 v dd = 3.6 v v dd = 3.5 v v dd = 3.3 v v dd = 3.1 v v dd = 2.9 v v dd = 2.7 v v dd = 2.5 v 2.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 3.7 2.5 2.7 2.9 3.1 3.3 3.5 i dd - s upply current idle mode (a) v dd - s upply voltage (v) 100 c 80 c 55 c 25 c -10 c -40 c 2.6 2.4 100 000 1 100 1000 10 000 10 0.1 1 10 100 proximity value (ct s ) di s tance to reflecting card (mm) 200 ma media: kodak gray card 20 ma 100 ma 260 0 20 40 60 200 150 -50 -25 025 125 i ired - forward current ired (ma) t amb - ambient temperature (c) 20 ma 40 ma 60 ma 80 ma 100 ma 120 ma 140 ma 160 ma 180 ma 200 ma v ired = 2.5 v 100 75 50 240 220 180 160 140 120 100 80
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 4 document number: 84177 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 fig. 5 - relative radian t intensity vs. wavelength fig. 6 - relative radiant inte nsity vs. angular displacement fig. 7 - relative spectral sensitivity vs. wavelength (proximity sensor) fig. 8 - relative radiant sensitivity vs. angular displacement (proximity sensor) fig. 9 - ambient light value vs. illuminance fig. 10 - relative spectral sensitivity vs. wavelength (ambient light sensor) 1.1 0 0.2 0.4 0.6 0.8 0.9 1.0 0.1 0.3 0.5 0.7 1050 750 800 850 900 950 1000 i e, rel - relative radiant inten s ity - wavelength (nm) 22305 i f = 100 ma 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 i rel - relative radiant inten s ity 22306 ? - angular displacement 1.1 0 0.2 0.4 0.6 0.8 0.9 1.0 0.1 0.3 0.5 0.7 1100 400 500 600 700 800 900 1000 s ( ) rel - relative s pectral s en s itivity - wavelength (nm) 22307 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 100 000 1 100 1000 10 000 10 ambient light s ignal (ct s ) e v - illuminance (lx) 0.1 1 10 100 1000 10 000 0 0.2 0.4 0.6 0.8 1.0 1100 400 500 600 700 800 900 1000 s ( ) rel - relative s pectral s en s itivity - wavelength (nm) VCNL4020X01 human eye
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 5 document number: 84177 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 fig. 11 - relative radiant sensitivity vs. angular displacement (ambient light sensor) application information VCNL4020X01 is a cost effective solution of proximity and ambient light sensor with i 2 c bus interface. the standard serial digital interface is easy to access proximity signal and light intens ity without complex calculatio n and programming by external controller. beside the digital ou tput also a flexible programma ble interrupt pin is available. 1. application circuit fig. 12 - application circuit (x) = pin number notes ? the interrupt pin is an open drain output . the needed pull-up resistor may be connected to the same supply voltage as the appl ication controller and the pull-up resistors at sda/ scl. proposed value r2 should be >1 k , e.g. 10 k to 100 k . proposed value for r3 and r4, e.g. 2.2 k to 4.7 k , depend also on the i 2 c bus speed. for detailed description about set-up and use of the interrupt as well as more application related information see an: designi ng vcnl3020 into an application. ? ir_cathode needs no external connection. the needed connection to the driver is done internally. 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 22311 vertical horizontal ? - angular displacement ho s t micro controller i 2 c bu s clock s cl i 2 c bu s data s da int (3) s cl (4) s da (2) g nd (8, 9) v dd (5) ir_anode (1) c1 c2 c3 c4 r1 100 nf 100 nf 10 f 22 f 10r g pio 2.5 v to 3.6 v 2.5 v to 5.0 v 1.7 v to 5.0 v r2 r3 r4 VCNL4020X01
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 6 document number: 84177 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 2. i 2 c interface the VCNL4020X01 contains seventeen 8 bit registers for operation control, parameter setup and result buffering. all registers are accessible via i 2 c communication. figure 13 shows the basic i 2 c communication with VCNL4020X01. the built in i 2 c interface is compatible with all i 2 c modes (standard, fast and high speed). i 2 c h-level range = 1.7 v to 5 v. please refer to the i 2 c specification from nxp for details. fig. 13 - send byte/receive byte protocol device address the VCNL4020X01 has a fix slave address for the host programming and accessing selection. the predefined 7 bit i 2 c bus address is set to 0010 011 = 13h. the least significant bit (lsb) defines re ad or write mode. accordingly the bus address is set to 0010 0 11x = 26h for write, 27h for read. register addresses VCNL4020X01 has seventeen user accessible 8 bit registers. the register addresse s are 80h (register #0) to 90h (register #16). register functions register #0 command register register address = 80h the register #0 is for starting ambient ligh t or proximity measurements. this register contains 2 flag bits for data ready indi cation. note ? with setting bit 3 and bit 4 at the same write command, a simultaneously measurement of ambient light and proximity is done. beside als_en and/or prox_en first se lftimed_en needs to be set. on-demand measurement mode s are disabled if selftime d_en bit is set. for the selftimed_en mode changes in reading rates (reg #4 and reg #2) can be made only when b0 (selftimed_en bit) = 0. for the als_od mode changes to the reg #4 can be made only when b4 (als_od bit) = 0; this is to avoid synchronization problems and undefined states between the clock domains. in effect this means that it is only reason able to change rates while no selftimed conversion is ongoing. s s lave addre ss rd receive byte read data from VCNL4020X01 a regi s ter addre ss a wr p s s lave addre ss p a a data byte s end byte write command to VCNL4020X01 s = s tart condition p = s top condition a = acknowledge ho s t action VCNL4020X01 re s pon s e s s lave addre ss a regi s ter addre ss a wr p data byte a table 1 - command register #0 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 config_lock als_data_rdy prox_data_rdy als_od prox_od als_en prox_en selftimed_en description config_lock read only bit. value = 1 als_data_rdy read only bit. value = 1 when ambient light measurement data is available in the result registers. this bit will be reset when one of the corresponding result registers (reg #5, reg #6) is read. prox_data_rdy read only bit. value = 1 when proximity measurement data is available in the result registers. this bit will be reset when one of the corresponding result registers (reg #7, reg #8) is read. als_od r/w bit. starts a single on-demand measurement for ambient light. if averaging is enabled, starts a sequence of readings and stores the averaged result . result is available at the end of conversion for reading in the registers #5(hb) and #6(lb). prox_od r/w bit. starts a single on-demand measurement for proximity. result is available at the end of conversion for reading in the registers #7(hb) and #8(lb). als_en r/w bit. enables periodic als measurement prox_en r/w bit. enables peri odic proximity measurement selftimed_en r/w bit. enables state machine and lp oscillator for self timed measurements; no measurement is performed until the corr esponding bit is set
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 7 document number: 84177 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 register #1 product id revision register register address = 81h. this regi ster contains information about product id and product revision. register data value of current revision = 21h. register #2 rate of proximity measurement register address = 82h. note ? if self_timed measurement is running, any new value written in this register will not be taken over until the mode is actualy cycled. register #3 led current setting for proximity mode register address = 83h. this register is to se t the led current value for proximity measurement. the value is adjustable in steps of 10 ma from 0 ma to 200 ma. this register also contains information about the used device fuse program id. table 2 - product id revision register #1 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 product id revision id description product id read only bits. value = 2 revision id read on ly bits. value = 1 table 3 - proximity rate register #2 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 n/a rate of proximity measurement (no. of measurements per second) description proximity rate r/w bits. 000 - 1.95 measurements/s (default) 001 - 3.90625 measurements/s 010 - 7.8125 measurements/s 011 - 16.625 measurements/s 100 - 31.25 measurements/s 101 - 62.5 measurements/s 110 - 125 measurements/s 111 - 250 measurements/s table 4 - ir led current register #3 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 fuse prog id ir led current value description fuse prog id read only bits. information about fuse program revision used for initial setup/calibration of the device. ir led current value r/w bits. ir led current = value (dec.) x 10 ma. valid range = 0 to 20d. e.g. 0 = 0 ma , 1 = 10 ma, ., 20 = 200 ma (2 = 20 ma = default) led current is limited to 200 ma for values higher as 20d.
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 8 document number: 84177 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 register #4 ambient light parameter register register address = 84h. note ? if self_timed measurement is running, any new value written in this register will not be taken over until the mode is actualy cycled. register #5 and #6 ambient light result register register address = 85h and 86h. these registers are the result registers fo r ambient light measurement readings. the result is a 16 bit value. the high byte is stor ed in register #5 and the low byte in register #6. table 5 - ambient light parameter register #4 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 cont. conv. mode als_rate auto offset compensation averaging function (number of measur ements per run) description cont. conversion mode r/w bit. continuous conversion mode. enable = 1; disable = 0 = default this function can be used for performing faster am bient light measurements. this mode should only be used with ambient light on-demand measurements. do not use with self-timed mo de. please refer to the application information chapter 3.3 for details about this function. ambient light me asurement rate r/w bits. ambient li ght measurement rate 000 - 1 samples/s 001 - 2 samples/s = default 010 - 3 samples/s 011 - 4 samples/s 100 - 5 samples/s 101 - 6 samples/s 110 - 8 samples/s 111 - 10 samples/s auto offset compensation r/w bit. automatic offset compensation. enable = 1 = default; disable = 0 in order to compensate a technology, package or te mperature related drift of the ambient light values there is a built in automatic offset compensation function. with active auto offset compensation the offset value is measured before each ambient light measurement and subtracted automatically from actual reading. averaging function r/w bits. averaging function. bit values sets the number of single conversions done during one measurement cycle. result is the average value of all conversions. number of conversions = 2 decimal_value e.g. 0 = 1 conv., 1 = 2 conv, 2 = 4 conv., .7 = 128 conv. default = 32 conv. (bit 2 to bit 0: 101) table 6 - ambient light result register #5 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description read only bits. high byte (15:8) of ambient light measurement result table 7 - ambient light result register #6 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description read only bits. low byte (7:0) of ambient light measurement result
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 9 document number: 84177 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 register #7 and #8 proximity measurement result register register address = 87h and 88h. thes e registers are the result registers for proximity measurement readings. the result is a 16 bit value. the high byte is stor ed in register #7 and the low byte in register #8. register #9 interrupt control register register address = 89h. table 8 - proximity result register #7 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description read only bits. high byte (15:8) of proximity measurement result table 9 - proximity result register #8 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description read only bits. low byte (7:0) of proximity measurement result table 10 - interrupt control register #9 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 int count exceed n/a int_prox_ ready_en int_als_ ready_en int_thres_en int_thres_ sel description int count exceed r/w bits. these bits contain the number of consecutive measurements needed above/below the threshold 000 - 1 count = default 001 - 2 count 010 - 4 count 011 - 8 count 100 -16 count 101 - 32 count 110 - 64 count 111 - 128 count int_prox_ready_en r/w bit. enables interr upt generation at pr oximity data ready int_als_ ready_en r/w bit. enables interr upt generation at ambient data ready int_thres_en r/w bit. enables in terrupt generation when high or low threshold is exceeded int_thres_sel r/w bit. if 0: thresholds are applied to proxim ity measurements if 1: thresholds are a pplied to als measurements
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 10 document number: 84177 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 register #10 and #11 low threshold register address = 8ah and 8bh. th ese registers contain the low threshold value. th e value is a 16 bit word. the high byte is stored in register #10 and the low byte in register #11. register #12 and #13 high threshold register address = 8ch and 8dh. these registers contain the high threshold value. the value is a 16 bit word. the high byte is stored in register #12 and the low byte in register #13. register #14 interrupt status register register address = 8eh. this register contains information abou t the interrupt status for either proximity or als function and indicates if high or low going threshold exceeded. note ? once an interrupt is generated the corresponding status bit goes to 1 and stays there unless it is cleared by writing a 1 in t he corresponding bit. the int pad will be pulled down wh ile at least one of the status bit is 1. table 11 - low threshold register #10 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description r/w bits. high byte (15:8) of low threshold value table 12 - low threshold register #11 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description r/w bits. low byte (7:0) of low threshold value table 13 - high threshold register #12 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description r/w bits. high byte (15:8) of high threshold value table 14 - high threshold register #13 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 description r/w bits. low byte (7:0) of high threshold value table 15 - interrupt status register #14 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 n/a int_prox_ready int_als_r eady int_th_low int_th_hi description int_prox_ready r/w bit. indicates a generated interrup t for proximity int_als_ready r/w bit. indicates a generated in terrupt for als int_th_low r/w bit. indicates a low threshold exceed int_th_hi r/w bit. indicates a high threshold exceed
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 11 document number: 84177 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 register #15 proximity modulator timing adjustment register address = 8fh. note ? the settings for best performance will be provided by vishay. with first samples this is evaluated to: delay time = 0 ; dead time = 1 and prox fr equency = 0 . with that register#15 should be programmed with 1 (= default value). register #16 ambient ir light level register register address = 90h. this register is not intended to be used by customer. 3. important application hints and examples 3.1 receiver standby mode in standby mode the receiver has th e lowest current consumption of about 1.5 a. in this mode only the i 2 c interface is active. this is always valid, when there are no measurement demands for proximity and ambient light ex ecuted. also the current sink for the ir-led is inactive, so there is no need for changing register #3 (ir led current). 3.2 data read in order to get a certain register value, the register has to be addressed without data like shown in the following scheme. aft er this register addressing, the data fr om the addressed register is writte n after a subsequent read command. fig. 14 - send byte/receive byte protocol the stop condition between these write and read sequences is no t mandatory. it works also with a repeated start condition. note ? for reading out 2 (or more) subsequent registers like the result registers, it is not necessary to address each of the registe rs separately. after one read command the internal register counter is increased auto matically and any subsequent read command is accessing the next register. table 16 - proximity modulator timing adjustment #15 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 modulation delay time proximity frequency modulation dead time description modulation delay time r/w bits. setting a delay time between ir led signal and ir input signal evaluation. this function is for compensation of delays from ir led and ir phot o diode. also in respect to the possibility for setting different proximity signal freq uency. correct adjustment is optimizing measurement signal level. ( default = 0) proximity frequency r/w bits. setting the proximit y ir test signal frequency the proximity measurement is using a square ir signal as measurement signal. four different values are possible: 00 = 390.625 khz (default) 01 = 781.25 khz 10 = 1.5625 mhz 11 = 3.125 mhz modulation dead time r/w bits. setting a dead time in evaluation of ir signal at the slopes of the ir signal. ( default = 1) this function is for reducing of possible dist urbance effects. this function is reduci ng signal level and should be used carefully. s s lave addre ss rd receive byte read data from VCNL4020X01 aregi s ter addre ss a wr p s s lave addre ss p a a data byte s = s tart condition p = s top condition a = acknowledge ho s t action VCNL4020X01 re s pon s e
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 12 document number: 84177 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 example: read register ambient light result register #5 and #6: addressing: command: 26h, 85h (VCNL4020X01_i 2 c_bus_write_adr., ambient light result register #5 [85]) read register #5: command: 27h, data (VCNL4020X01_i 2 c_bus_read_adr., {high byte data of ambient light result register #5 [85])} read register #6: command: 27h, data (VCNL4020X01_i 2 c_bus_read_adr., {low by te data of ambient light result register #6 [86])} 3.3 continuous conversion mode in ambient light measurement in the following is a detail description of the function continuous conversion (bit 7 of register #4) standard mode (bit 7 of reg #4 = 0): in standard mode the ambient light measurem ent is done during a fixed time frame of 100 ms. the single measurement itself takes actually only appr. 300 s. the following figures show examples of this measurement timing in standard mode using averaging function 2 and 8 as examples for illustration (p ossible values up to 128). fig. 15 - ambient light meas urement with averaging = 2; final measurement result = average of these 2 measurements fig. 16 - ambient light measurement with averaging = 8; final measurement result = average of these 8 measurements note ? independent of setting of averaging the result is available only after 100 ms. continuous conversion mode (bit 7 of register #4 = 1): in continuous conversion mode the single measuremen ts are done directly subsequent after each other. see following examples in figure 17 and 18 fig. 17 - ambient light meas urement with averaging = 2; using continuous conversion mode fig. 18 - ambient light measurement with averaging = 8; using continuous conversion mode 50 m s 100 m s s tart 22315 12.5 m s s tart 100 m s 22316 460 s s tart 1.5 m s 22317 460 s s tart 4.2 m s 22318
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 13 document number: 84177 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 package dimensions in millimeters not indicated tolerances 0.1 1 . 2 7 1 . 5 0.69 2.03 4.15 4.9 2 . 4 0 . 1 5 0 . 8 3 0.65 0.685 2.74 4x0.685= 0.78 1.49 1.62 drawing-no.: 6.550-5319 proposed pcb footprint pinning bottom view pinning top view 0.3 0 . 5 5 a n o d e e m i t t e r s d a i n t s c l v d d c a t h o d e e m i t t e r v s s c a t h o d e p d s d a i n t s c l v d d c a t h o d e e m i t t e r v s s c a t h o d e p d a n o d e e m i t t e r technical drawings according to din specifications 0 . 2 0 . 8 2.74 4x 0.685= 2 . 4 ( ) 4.9 () 0.45 0 . 2 0 . 8 0.4 0.37 0.83 1.75 0.4 1.1 0.25 0.28 0.4 0.73 0.95 0.98 0 . 2 4
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 14 document number: 84177 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 tape and reel dimensions in millimeters
VCNL4020X01 www.vishay.com vishay semiconductors rev. 1.2, 13-aug-14 15 document number: 84177 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 solder profile fig. 19 - 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: 168 h conditions: t amb < 30 c, rh < 60 % moisture sensitivity level 3, 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
legal disclaimer notice www.vishay.com vishay revision: 13-jun-16 1 document number: 91000 disclaimer ? all product, product specifications and data ar e subject to change with out notice to improve reliability, function or design or otherwise. vishay intertechnology, inc., its affiliates, agents, and employee s, and all persons acting on it s or their behalf (collectivel y, vishay), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained in any datasheet or in any o ther disclosure relating to any product. vishay makes no warranty, representation or guarantee regarding the suitability of th e products for any particular purpose or the continuing production of any product. to the maximum extent permitted by applicable law, vi shay disclaims (i) any and all liability arising out of the application or use of any product , (ii) any and all liability, including without limitation specia l, consequential or incidental damages, and (iii) any and all implied warranties, includ ing warranties of fitness for particular purpose, non-infringement and merchantability. statements regarding the suitability of products for certain types of applicatio ns are based on vishays knowledge of typical requirements that are often placed on vishay products in generic applications. such statements are not binding statements about the suitability of products for a particular applic ation. it is the customers responsibility to validate tha t a particular product with the prope rties described in the product sp ecification is suitable for use in a particular application. parameters provided in datasheets and / or specifications may vary in different ap plications and perfor mance may vary over time. all operating parameters, including ty pical parameters, must be va lidated for each customer application by the customer s technical experts. product specifications do not expand or otherwise modify vishays term s and conditions of purchase, including but not limited to the warranty expressed therein. except as expressly indicated in writing, vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the vishay product could result in personal injury or death. customers using or selling vishay product s not expressly indicated for use in such applications do so at their own risk. please contact authorized vishay personnel to obtain writ ten terms and conditions rega rding products designed for such applications. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is gran ted by this document or by any conduct of vishay. product names and markings noted herein may be trademarks of their respective owners.

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