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VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 1 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 VCNL4020 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, pda, gps) for touch screen locking, power saving, etc. ? integrated ambient light function for display/keypad contrast control and dimm ing of mobile devices ? proximity/optical switch for consumer, computing and industrial devices and displays ? dimming control for consumer, computing and industrial displays features ? package type: surface mount ? dimensions (l x w x h in mm): 4.90 x 2.40 x 0.83 ? integrated infrared emitter, ambient light sensor, proximity sensor, 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: 72 h, msl 4, acc. j-std-020 ? low stand by current consumption: 1.5 a ? material categorization: for 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 suppr ession 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 VCNL4020 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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 2 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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) vcnl4000 demokit provides usb dong le, basic softwa re including vishay licence. the vcnl40 20 sensor board coul d be ordered free of charge. for your order please contact sensorstechsupport. softwa re updates for VCNL4020 could be downloaded from web site: www.vishay.com/optical-se nsors/list/product-83476/ ordering information ordering code packaging volume (1) remarks VCNL4020-gs08 tape and reel moq: 3300 pcs 4.90 mm x 2.40 mm x 0.83 mm VCNL4020-gs18 moq: 13 000 pcs vcnl4000demokit (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 - 25 + 85 c storage temperature range t stg - 25 + 85 c total power dissipation t amb 25 c p tot 50 mw junction temperature t j 100 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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 3 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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) VCNL4020 ired 30 mm x 30 mm proxi-pd 22300-2 2.4 1.0 1.2 1.4 1.8 1.6 2.0 2.2 110 - 50 - 30 10 50 90 - 10 30 70 i dd - s upply current idle mode (a) t amb - ambient temperature (c) 22301 v dd = 3.6 v v dd = 3.5 v v dd = 3.3 v v dd = 3.1 v v dd = 2.5 v v dd = 2.7 v v dd = 2.9 v 2.4 1.0 1.2 1.4 1.6 1.8 2.0 2.2 3.8 2.4 2.6 2.8 3.0 3.2 3.4 3.6 i dd - s upply current idle mode (a) v dd - s upply voltage (v) 22302 100 c 80 c 55 c 25 c - 10 c - 40 c 100 000 1 100 1000 10 000 10 0.1 1 10 100 proximity value (ct s ) di s tance to reflecting card (mm) led current 200 ma media: kodak gray card mod. fre q uency = 390 khz led current 100 ma led current 20 ma 250 0 50 100 150 200 140 - 60 - 20 20 60 100 i ired - forward current ired (ma) t amb - ambient temperature (c) 22304 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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 4 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 in tensity 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) VCNL4020 human eye
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 5 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 VCNL4020 is a cost effective solution of proximity and ambient light sensor with i 2 c bus interface. the st andard 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 output also a fl exible programmable interrupt pin is available. 1. application circuit fig. 12 - application circuit (x) = pin number note ? 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 ab out set-up and use of the interrupt as well as mo re application related information see an: designi ng VCNL4020 into an application. 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 22312-3 ho s t micro controller i 2 c bu s clock s cl i 2 c bu s data s da VCNL4020 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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 6 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 VCNL4020 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 VCNL4020. the built in i 2 c interface is compatible with all i 2 c modes (standard, fa st 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 VCNL4020 has a fix slave address for the host programming and accessing sel ection. 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 011x = 26h for write, 27h for read. register addresses VCNL4020 has seventeen user accessible 8 bit registers. the register addresses are 80h (register #0) to 90h (register #16). register functions register #0 command register register address = 80h the register #0 is for starting ambient light or proximity measur ements. 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 selfti med_en needs to be set. on-demand measurement modes are disabled if selftimed_ en bit is set. for the selftimed_en mode changes in reading rates (reg #4 and reg #2) ca n be made only when b0 (selft imed_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 VCNL4020 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 VCNL4020 s = s tart condition p = s top condition a = acknowledge ho s t action VCNL4020 re s pon s e s s lave addre ss a regi s ter addre ss a wr p data byte a 22313-2 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 re sult 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 corre sponding bit is set
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 7 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 register contains in formation 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 take n 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 fo r 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 only 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 measurem ents/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.
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 8 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 take n over until the mode is actualy cycled. register #5 and #6 ambient light result register register address = 85h and 86h. these registers are the re sult registers for 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 ambient light measurements. this mode should only be used with ambient light on-demand measurements. do not use with self-timed mode. please refer to the application information chapter 3.3 for details about this function. ambient light measurement 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 of fset 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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 9 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 proximit y measurement result register register address = 87h and 88 h. these 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 interrupt ge neration at prox imity 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 proximity measurements if 1: thresholds are applied to als measurements
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 10 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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. these registers contain the low th reshold value. the 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. th ese registers contain the high th reshold 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 about 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 in terrupt for proximity int_als_ready r/w bit. indicates a generate d interrupt for als int_th_low r/w bit. indica tes a low threshold exceed int_th_hi r/w bit. indicates a high threshold exceed
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 11 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 perf ormance will be prov ided by vishay. with first sa mples this is evaluated to: delay time = 0 ; dead time = 1 and prox frequency = 0 . with th at 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 the lowest current co nsumption 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 executed. 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 da ta like shown in the following scheme. aft er this register addressing, th e data from the addressed register is wr itten 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 modula tor 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 photo diode. also in respect to the possibility for setting different proximity signal frequency. 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 ev aluation of ir signal at the slop es of the ir signal. ( default = 1) this function is for reducing of possible dist urbance effects. this function is reducing signal level and should be used carefully. s s lave addre ss rd receive byte read data from VCNL4020 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 VCNL4020 re s pon s e
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 12 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 (VCNL4020_i 2 c_bus_write_adr., ambient light result register #5 [85]) read register #5:command: 27h, data (VCNL4020_i 2 c_bus_read_adr., {high byte data of ambient light result register #5 [85])} read register #6:command: 27h, data (VCNL4020_i 2 c_bus_read_adr., {low byte 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 func tion continuous conversion (bit 7 of register #4) standard mode (bit 7 of reg #4 = 0): in standard mode the ambient light measur ement is done during a fixed time frame of 100 ms. the single measurement itself takes actually only appr. 300 s. the following figures show exam ples of this measurement timing in standard mode using averaging function 2 and 8 as examples for illustration (possible values up to 128). fig. 15 - ambient light measurement with averaging = 2; final measurement result = average of these 2 measurements fig. 16 - ambient light me asurement with averaging = 8; final measurement result = average of these 8 measurements note ? independent of setting of averaging th e result is availabl e only after 100 ms. continuous conversion mode (bit 7 of register #4 = 1): in continuous conversion mode the single measuremen ts are done directly subs equent after each other. see following examples in figure 17 and 18 fig. 17 - ambient light measurement with averaging = 2; using continuous conversion mode fig. 18 - ambient light me asurement 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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 13 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 refers to following types: VCNL4020 drawing-no.: 6.550-5319 issue: prel. 14. may 2012 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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 14 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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
VCNL4020 www.vishay.com vishay semiconductors rev. 1.1, 20-jul-12 15 document number: 83476 for technical questions, contact: sensorstechsuppo rt@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 acc. j-std-020 drypack devices are packed in moisture 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, acc. to j-std-020. drying in case of moisture absorpti on 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: 12-mar-12 1 document number: 91000 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 employee s, and all persons acting on it s or their behalf (collectivel y, vishay), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any o ther disclosure relating to any product. vishay makes no warranty, repres entation or guarantee regarding the suitabilit y of the 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 i mplied warranties, including warra nties of fitness for particular purpose, non-infringement and merchantability. statements regarding the suitability of products for certain type s of applications 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 application. it is the customers responsib ility to validate that a particu lar product with the properties descri bed in the product specification is suitable fo r use in a particular application. parameters provided in datasheets and/or specification s may vary in different applications an d performance may vary over time. all operating parameters, including typical pa rameters, must be validated for each customer application by the customers technical experts. product specifications do not expand or otherwise modify vish ays terms and condit ions of purchase, including but not limited to the warranty expressed therein. except as expressly indicate d 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 vi shay product could result in personal injury or death. customers using or selling vishay products no t expressly indicated for use in such applications do so at their own risk and agr ee to fully indemnify and hold vishay and it s distributors harmless from and against an y and all claims, liabilities, expenses and damages arising or resulting in connection with such use or sale , including attorneys fees, even if such claim alleges that vis hay or its distributor was negligent regarding th e design or manufacture of the part. please contact authorized vishay personnel t o obtain written terms and conditions regardin g products designed for such applications. no license, express or implied, by estoppel or otherwise, to any intellectual prope rty rights is granted by this document or by any conduct of vishay. product names and markings noted herein may be trad emarks of their respective owners. material category policy vishay intertechnology, inc. hereby certi fies that all its products that are id entified as rohs-compliant fulfill the definitions and restrictions defined under directive 2011/65/eu of the euro pean parliament and of the council of june 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (eee) - recast, unless otherwis e specified as non-compliant. please note that some vishay documentation may still make reference to rohs directive 2002/95/ ec. we confirm that all the products identified as being compliant to directive 2002 /95/ec conform to directive 2011/65/eu.

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