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VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 1 document number: 84150 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 sensor with infrared emitter, i 2 c interface, and interrupt function description the VCNL3020 is a fully integrated proximity 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. ? proximity/optical switch for consumer, computing and industrial devices and displays features ? package type: surface mount ? dimensions (l x w x h in mm): 4.90 x 2.40 x 0.83 ? integrated infrared emi tter, 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 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 product summary part number operating range (mm) operating voltage range (v) i 2 c bus voltage range (v) led pulse current (1) (ma) output code VCNL3020 1 to 200 2.5 to 3.6 1.7 to 5 10 to 200 16 bit, i 2 c
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 2 document number: 84150 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 vcnl30 20 sensor board coul d be ordered free of charge. for your order please contact sensorstechsupport. softwa re updates for VCNL3020 could be downloaded from web site: www.vishay.com/optical-se nsors/list/product-83476/ circuit block diagram note ? nc must not be electrically connected pads 6 and 7 are only considered as solder pads test circuit ordering information ordering code packaging volume (1) remarks VCNL3020-gs08 tape and reel moq: 3300 pcs 4.90 mm x 2.40 mm x 0.83 mm VCNL3020-gs18 moq: 13 300 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 i 2 c clock rate range f scl 3400 khz vcnl 3020 a s ic 1 2 3 4 5 v dd ir anode s da s cl int 6 10 9 8 7 ir cathode g nd nc nc g nd ired proxi pd d = 20 mm kodak gray card (18 % reflectivity) VCNL3020 ired 30 mm x 30 mm proxi-pd 22300-3
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 3 document number: 84150 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 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 fig. 5 - relative radian t intensity vs. wavelength fig. 6 - relative radiant in tensity vs. angular displacement 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 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
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 4 document number: 84150 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. 7 - relative spectral sensitivity vs. wavelength (proximity sensor) fig. 8 - relative radiant sensitivity vs. angular displacement (proximity sensor) application information VCNL3020 is a cost effective solution of proximity sensor with i 2 c bus interface. the standard serial digital interface is easy to access proximity signal without complex ca lculation and programming by external cont roller. beside the digital output also a flexible programmable in terrupt pin is available. 1. application circuit fig. 9 - 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 VCNL3020 into an application. 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 22312-4 ho s t micro controller i 2 c bu s clock s cl i 2 c bu s data s da VCNL3020 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
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 5 document number: 84150 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 VCNL3020 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 VCNL3020. 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. 10 - send byte/receive byte protocol device address the VCNL3020 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 VCNL3020 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 proximity measurements. this register contains a flag bi t for data ready indication. note ? beside prox_en first selftimed_en needs to be set. on-demand meas urement mode is disabled if se lftimed_en bit is set. for the selftimed_en mode changes in reading rates (reg #2) can be made only when b0 (selftimed_en bit) = 0. s s lave addre ss rd receive byte read data from VCNL3020 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 VCNL3020 s = s tart condition p = s top condition a = acknowledge ho s t action VCNL3020 re s pon s e s s lave addre ss a regi s ter addre ss a wr p data byte a 22313-3 table 1 - command register #0 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 config_lock n/a prox_data_rdy n/a prox_od n/a prox_en selftimed_en description config_lock read only bit. value = 1 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. 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). 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
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 6 document number: 84150 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.
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 7 document number: 84150 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 5 - 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 6 - 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 7 - interrupt control register #9 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 int count exceed n/a int_prox_ ready_en n/a 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_thres_en r/w bit. enables in terrupt generation when high or low threshold is exceeded int_thres_sel r/w bit. 0: thresholds are applied to prox imity measurements
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 8 document number: 84150 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 contai ns information about the interrupt status 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 8 - 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 9 - 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 10 - 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 11 - 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 12 - interrupt status register #14 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 n/a int_prox_ready n/a int_th_low int_th_hi description int_prox_ready r/w bit. indicates a generated in terrupt for proximity int_th_low r/w bit. indica tes a low threshold exceed int_th_hi r/w bit. indicates a high threshold exceed
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 9 document number: 84150 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 proximity measurement demand s 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. 11 - 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 13 - 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
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 10 document number: 84150 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 regist er proximity result register #7 and #8: addressing:command: 26h, 87h (VCNL3020_i 2 c_bus_write_adr., proximity re sult register #7 [87]) read register #7: command: 27h, data (VCNL3020_i 2 c_bus_read_adr., {high byte data of proximity result register #7 [87])} read register #8: command: 27h, data (VCNL3020_i 2 c_bus_read_adr., {low byte data of proximity result re gister #8 [88])} package dimensions in millimeters not indicated tolerances 0.1 1 . 2 7 1 . 5 0.69 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: VCNL3020 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
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 11 document number: 84150 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
VCNL3020 www.vishay.com vishay semiconductors rev. 1.0, 25-jun-12 12 document number: 84150 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. 12 - 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
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