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sfh 7770 umgebungslicht und n?herungssensor ambient light and proximity sensor lead (pb) free produc t - rohs compliant 2011-08-30 1 not for new design in industr ial and automotive application wesentliche merkmale ? n?herungssensor - detektionsbereich bis 100mm - gestenerkennung - ausg?nge zum betrieb von bis zu drei ir emittern - optimiert fr 850nm emitter - umgebungslicht-unterdrckung ? umgebungslichtsensor - 3lx - 65000lx - gute linearit?t - spektrale empfindlichkeit ?hnlich dem menschlichen auge ?i 2 c interface - 100khz / 400khz und 3.4mhz mode - verschiedene messmoden programmierbar (stand-by, triggered, free-running) ?< 5 a stromverbrauch im stand-by ? geringe abmessungen, 2.8 x 2.8 x 0.9 mm 3 anwendungen ? mobiltelefone ? pda?s und notebooks ? kameras ? consumer produkte typ type bestellnummer ordering code sfh 7770 Q65110A9565 features ? proximity sensor (ps) - detection-range up to 100mm - gesture recognition possible - outputs to drive up to three ir emitters - optimized for 850nm emitters - suppression of ambient light ? ambient light sensor (als) - 3lx - 65000lx - high linearity - spectral sensitivity well matched to the human eye ?i 2 c interface - 100khz / 400khz and 3.4mhz mode - measurement modes programmable (stand-by, triggered, free-running) ? current consumption < 5 a in stand-by ? small package size, 2.8 x 2.8 x 0.9 mm 3 applications ? mobile phones ? pdas and notebooks ? cameras ? consumer products
sfh 7770 2011-08-30 2 application diagram and basic informations ? the inductivity of the wire from the led pin (1,2 or 3) to the cathode of the led needs to be <20nh at if=200ma (e.g. max 2 ? 3cm length of a wire). the cable length may be increased for lower currents inversely proportional to forward current: cable length 1/forward current (e.g. max 8 - 12cm at if=50ma). ? proposed size for the pull-up resistor is 560 ohm ? short evaluation program adress command action 0x80 write 03 ambient light sensor in free-running mode 0x81 write 03 proximity sensor in free-running mode wait 110 ms 0x8c read data read lsbyte data from ambient light measurement 0x8d read data read msbyte data from ambient light measurement 0x8f read data read data from proximity measurement led 1
sfh 7770 2011-08-30 3 i 2 c interface ? 1.8v io-logic level for sda and scl ? i/o-pins are open drain type and logic high le vel is set with external pull-up resistor ? sfh 7770 operates always as slave, address is 0x38. ? designed for the i 2 c-modes: standard (100khz), fast (400khz) and high speed (3.4mhz) ? combined format (see i 2 c bus specification um10204 from nxp) for data reading ? block read and write modes are available. in t hese modes several registers can be read or written during single i 2 c traffic period. the register values are pr ovided in a cyclic manner until master sends the stop condition. e.g. if master uses block read and starts from register 0x8c, the slave returns following register values: 0x8c, 0x8d, 0x8e, 0x8f , 0x90, 0x91, 0x92, 0x93, 0x94 and so on until the master sends stop condition. ? interrupt pin (int): open-drain output (like sda and scl) analog / amplifier digital + data- register proximity ambient light i 2 c led driver 9 8 sda scl 3 2 1 4 7 6 10 5 int led 1 led 2 led 3 gnd_led gnd nc v dd
sfh 7770 2011-08-30 4 measurement modes if v dd exceeds the threshold-voltage, the sensor will switch from off to stand-by mode. as shown in the transition diagram above it is possible to sw itch between all modes without any restriction. the transition time between modes ( t trans ) is < 10ms. the delay time between stand-by and start of measurement is max. 10ms for the ambient light sensor. off i dd is below 2 a and the device is inactive. other units may use the i 2 c bus without any restrections; i/o pins and int are in a high z state. there is no sink current through the leds. stand-by this is the initial mode after power-up . i dd is below 5 a. no measurement is performed. device can be activated by i 2 c bus communication. data registers can be read and written. the data will be stored in the registers when the device goes from triggered or free- running to stand-by. triggered every measurement is separately initiate d by mcu. this mode can be used for ambient light sensor and proximity sensor . measurement data are available in the registers after a defined delay time. free-running measurements are triggered internally by sfh7770. this mode can also be used for ambient light sensor and proximity sensor. measurement repetition rate and current through the leds are defined by the mcu. measurement results can be read from the data register, the status from the interrupt register. f r e e - r u n n i n g t r i g g e r e d stand_by f r e e - r u n n i n g t r i g g e r e d stand-by off ambientlight sensor ( als ) proximity sensor ( ps ) f r e e - r u n n i n g t r i g g e r e d stand_by f r e e - r u n n i n g t r i g g e r e d stand-by off ambientlight sensor ( als ) proximity sensor ( ps )
sfh 7770 2011-08-30 5 maximum limits operating conditions parameter symbol value unit min. typ. max. storage temperature t stg ? 40 + 85 c supply voltage (between v dd and gnd) v dd - 0.3 + 4.5 v maximum voltage of sda, scl and int to gnd v dig - 0.3 + 3.6 v maximum voltage of led1 ... led3 to gnd_led v led - 0.3 + 5.5 v maximum voltage between gnd and gnd_led v led -500 +500 mv electrostatic discharge - human body model (according to jesd22-a114-e; class2 ) esd 2 kv parameter symbol value unit min. typ. max. operation temperature t op - 20 + 85 c supply voltage v dd 2.3 3.1 v ripple on supply voltage (v dd = 2.35 - 3.05v, dc ... 100mhz) v dd,rip 10 mv voltage for i/o (sda, scl, int) 1) 1) the limits for the logic levels of scl and sda pins are in accordance with the i2c bus specification from nxp (um10204 ?i2c bus specification and user manual?, rev. 03 - 19 june 2007). the same limits are valid for the logic levels of the interrupt pin (int): the maximum leve l for logic ?low? level is 30% of the i/o voltage v io , the minimum level for logic ?high? level is 70% of the i/o voltage v io . v io 1.6 2.0 v extended voltage range fo r i/o (sda, scl, int) 2) 2) extended voltage range for i2c bus communication is only valid for standard- and fast-mode. input levels are internally referenced to 1.8v. so ?low? level threshold is 30% of 1.8v and ?high? level threshold is 70% of 1.8v regardless of the external i/o voltage v io . this fixed internal reference volt age can also lead to minor timing violations to the i2c bus specific ation from nxp concerning the mini mum/maximum hold time requirement. v io,ext 1.6 3.1 v supply voltage led v led 2.3 4.25 v ripple v led dc... 30khz 30khz ... 100mhz v led,rip 500 200 mv mv
sfh 7770 2011-08-30 6 characteristics (ta = 25c ) 1) start-up sequence the threshold limit where the device switch es from off to stand-by is between v dd =1.4v and v dd =2.0v. within 0.2s after exceeding the threshol d voltage the device will switch from off to stand-by mode. parameter symbol value unit min. typ. max. general conditions for off mode 1) v dd,off 1.4 v on-time (from off to stand-by) 1) t on 0.2 s threshold level for stand-by mode 1) v dd,on 2.0 v transition time between modes (stand-by ...triggered ...free-running) t trans 10 ms stand-by mode current consumption i dd,stby 5 a off mode current consumption i dd,off 2 a time v dd 1.4v 2.0v upper threshold limit lower threshold llimit off mode: un defin ed stand-by un defin ed stand-by t on <0.2s t on <0.2s time v dd 1.4v 2.0v upper threshold limit lower threshold llimit off mode: un defin ed stand-by un defin ed stand-by t on <0.2s t on <0.2s
sfh 7770 2011-08-30 7 characteristics (ta = 25c ) 2) output signal of the proximity sensor the sensitivity range of the proximity sensor is typ. 100 w/cm 2 to 1.0 mw/cm 2 . within this range, the data in the sfh 7770 output register are available in an approximately logarithmic scale. the advantage of the logarithmic scale is the possibility to co ver a large range of distance without changing the sensitivity settings of the sensor. in addition the dat a are then approximately proportional to the distance of an object. when the irradiation is below 100 w/cm2, the ps outpu t signal exhibits noise wh ich is typically below 80 output counts (see the dashed line in the graph below). for irradiation higher than typ. 100 w/cm2, the ps output signal increa ses monotonically up to a value of typ. 163. parameter symbol value unit min. typ. max. proximity sensor (ps) wavelength of max. sensitivity s,max 850 nm spectral range of sensitivity (50% of s max ) s,50% 750 ... 1000 nm sensitivity range, = 850nm 2) e e 0.09 ... 1.6 mw/cm2 sensor signal (logarithmic) 2) 0 ... 254 counts measurement accuracy for irradiance ee, =850nm at ee=500w/cm2 - 6 + 6 db led pulse current, programmable, ( only when v led - v f1, f2, f3 > 0.4v) 1) 1) dc-offset of 0.5ma has to be added to led current consumption during led burst i led,pp 5 200 ma accuracy of led pulse current i led,pp -20 +20 % mean current consumption, free-running ( one led ?on?, if=100ma, t rep = 100ms) i act 300 a modulation frequency of led current f mod 667 khz repeat frequency in free-running mode (programmable) t rep 10 ... 2000 ms length of a single led burst t burst 300 s length of a measurement cycle for 3 leds t 1 ms update of register data after mcu request t 10 ms sunlight suppression 50 klx
sfh 7770 2011-08-30 8 when the irradiation is higher than 1 mw/cm2, the ps output signal steps up to a value of 254 output counts. the proximity signal is converted to a 8 bit signal. when the irradiation is 500 w/cm2 the output is typically 137 (1010 0011). more details on the characteri stics of the proximity sensor can be seen below. 50 100 150 200 250 300 0,01 0,1 1 10 e e (mw/cm2) ps signal (counts)
sfh 7770 2011-08-30 9 characteristics (ta = 25c ) parameter symbol value unit min. typ. max. ambient light sensor (als) wavelength of max. sensitivity s max 555 nm spectral range of sensitivity (10% of s max ) s10% 480-660 nm measurement range 3 65000 counts sensitivity (1000lx) out 0.6 1 1.5 count/lx deviation from linear output characteristics 1) x = 100-65000lx x = 10-100lx x = 3-10lx 1) the deviation of the linear output characteristic is referenced to 1000lx and follows the formula : x: sensor illumination level in lux y x : sensor output / measurement value at illumination level x y 1000lx : sensor output / measurement va lue at illuminati on level 1000lx f lin 5 10 30 % temperature coefficient for e v measurement 0c ... 50c -15c ... 70c t cev - 0.20 - 0.25 + 0.20 + 0.25 %/k %/k update of register data after mcu request t 100 ms measurement repetition rate in free-running mode, programmable t rep 100 ... 2000 ms mean current consumption in free-running mode, t rep = 500ms i act 200 a current consumption in stand-by mode i stby 5 a error by flicker noise (caused by bulbs or fluorescent lamps) (f = 50 or 60hz, 100% modulation) -5 +5 % f lin y x y 1000lx ------------------ 1000lx x ----------------- - 1 ? ?? ?? 100% =
sfh 7770 2011-08-30 10 sw reset (bit 3 ?h?) starts sets all registers to def ault (same as power up). set back to ?l? by sfh7770 automatically. software reset and control of the ambient light sensor r/w-register 0x80 bit 7 6 5 4 3 2 1 0 not used complete sw reset mode of ambient light sensor default 00000 0 00 stand-by 1 sw reset 00 stand-by 01 stand-by 10 triggered (by mcu) 11 free-running (i nternally triggered) control of the proximity sensor r/w-register 0x81 bit 7 6 5 4 3 2 1 0 not used mode of proximity sensor default xxxxxx 00 stand-by 00 stand-by 01 stand-by 10 triggered by mcu 11 free-running (i nternally triggered)
sfh 7770 2011-08-30 11 emitter current setting emitter current setting r/w-register 0x82 bit 7 6 5 4 3 2 1 0 activation of leds setting led2 pulse current setting led1 pulse current default 00 011 50 ma 011 50 ma 00 led1 active 000 5 ma 000 5 ma 01 led1 and 2 active 001 10 ma 001 10 ma 10 led1 and 3 active 010 20 ma 010 20 ma 11 all leds active 011 50 ma 011 50 ma 100 100 ma 100 100 ma 101 150 ma 101 150 ma 110 200 ma 110 200 ma r/w-register 0x83 bit 7 6 5 4 3 2 1 0 not used setting led3 pulse current default xxxxx 011 50 ma 000 5 ma 001 10 ma 010 20 ma 011 50 ma 100 100 ma 101 150 ma 110 200 ma
sfh 7770 2011-08-30 12 mcu-triggered measurement (for ambien t light sensor and proximity sensor) if ?1? is set, a new measurement will start after the i 2 c stop commmand from the mcu. as soon as the measurement is finished, the corresponding bit of the register will be set to ?0? automatically by the sfh7770. proximity measurement: time interval settings (repetition time) for free-running mode r/w-register 0x84 bit 7 6 5 4 3 2 1 0 not used trigger ambient light trigger proximity default xxxxxx 1 1 r/w-register 0x85 bit 7 6 5 4 3 2 1 0 not used time-interval default xxxx 0101 100 ms 0000 10 ms 0001 20 ms 0010 30 ms 0011 50 ms 0100 70 ms 0101 100 ms 0110 200 ms 0111 500 ms 1000 1000 ms 1001 2000 ms
sfh 7770 2011-08-30 13 ambient light measurement: time interval settings (repetition time) for free-running mode part number and revision identification manufacturer identification r/w-register 0x86 bit 7 6 5 4 3 2 1 0 not used time-interval default xxxxx 010 500 ms 000 100 ms 001 200 ms 010 500 ms 011 1000 ms 100 2000 ms r-register 0x8a bit 7 6 5 4 3 2 1 0 part number id revision id 1001 xxxx (start with 0000) r-register 0x8b bit 7 6 5 4 3 2 1 0 manufacturer identification 0000 0011
sfh 7770 2011-08-30 14 ambient light measurement data (0x8c: lsb , 0x8d: msb ) the result of the ambient light sensor is a 16bit wo rd with msb and lsb and is stored in two registers.. the binary data can be converted directly to decimal ?lx? values (max. 65535lx) status of measurement data for ambient li ght sensor (als) and proximity sensor (ps) when the measurement data are available in the re gister, the corresponding status bit (bit 6 for ambient-light; bit 4, 2 and 0 for prox imity) in register 0x8e is set to ?1?. when the measurement data have been read by the mcu, the status bit is automatically set back to ?0?. bit 7 is set ?1? when the measured als value is ou tside the threshold level settings (register 0x96... 0x99). bit 1, 3 and 5 are set when the measured ps va lue is above the threshold level (register 0x93... 0x95). the status of register 0x8e will always be updated when a new measurement is available. proximity measurement data (led 1 , 8bit, logarithmic) r-register 0x8c bit 7 6 5 4 3 2 1 0 lsb data default 00000000 r-register 0x8d bit 7 6 5 4 3 2 1 0 msb data default 00000000 r-register 0x8e bit 7 6 5 4 3 2 1 0 als threshold als data ps led3 threshold ps led3 data ps led2 threshold ps led2 data ps led1 threshold ps led1 data default 00000000 r-register 0x8f bit 7 6 5 4 3 2 1 0 data default 00000000
sfh 7770 2011-08-30 15 proximity measurement data (led 2 , 8bit, logarithmic) proximity measurement data (led 3 , 8bit, logarithmic) interrupt register / int output. in bit6/5 the source which triggers the interrupt is noted. data from the status register (0x8e) are used. in latched mode (set by bit3) this remains unchange d until the interrupt register has been read by the mcu, afterewards it is set to 0 automatically. in unlatched mode it is updated after every measurement. the output polarity (pin 5 of th e sfh7770) can be changed by bit 2. the interrupt can be triggered by the ambient light s ensor and / or by the pr oximity sensor; this can be set by the interrupt mode (bit 1/bit 0). when bit 1 and bit 0 is set to 0, the int output is in the high z state (high impedance). r-register 0x90 bit 7 6 5 4 3 2 1 0 data default 00000000 r-register 0x91 bit 7 6 5 4 3 2 1 0 data default 00000000 r/w-register 0x92 bit 7 6 5 4 3 2 1 0 not used interrupt trigger source not used output mode output polarity interrupt mode (triggered by..) r/w not used r only not used r/w r/w r/w default x 00 x 1 0 00 00 als 0 latched 0 active l 00 z state 01 ps (led 1) 1 not latched 1 active h 01 only ps 10 ps (led 2) 10 only als 11 ps (led 3) 11 ps and als
sfh 7770 2011-08-30 16 threshold level for proximity sensor (led 1) threshold level for proximity sensor (led 2) threshold level for proximity sensor (led 3) upper threshold level for ambient light sensor (lsb) rw-register 0x93 bit 7 6 5 4 3 2 1 0 data default 11111111 rw-register 0x94 bit 7 6 5 4 3 2 1 0 data default 11111111 rw-register 0x95 bit 7 6 5 4 3 2 1 0 data default 11111111 rw-register 0x96 bit 7 6 5 4 3 2 1 0 lsb data (upper threshold) default 11111111
sfh 7770 2011-08-30 17 upper threshold level for ambient light sensor (msb) lower threshold level for ambient light sensor (lsb) lower threshold level for am bient light sensor (msb) rw-register 0x97 bit 7 6 5 4 3 2 1 0 msb data (upper threshold) default 11111111 rw-register 0x98 bit 7 6 5 4 3 2 1 0 lsb data (upper threshold) default 11111111 rw-register 0x99 bit 7 6 5 4 3 2 1 0 lsb data (upper threshold) default 11111111
sfh 7770 2011-08-30 18 package outlines ma?e in mm/ dimensions in mm pin 1 identifier: one additional yellow pad in the edge, visible in front view
sfh 7770 2011-08-30 19 gurtung / polarit?t und lage verpackungseinheit 3000/rolle, ?180 mm method of taping / polarity and orientation packing unit 3000/reel, ?180 mm ma?e in mm (inch) / dimensions in mm (inch). tape dimensions in mm (inch) reel dimensions in mm (inch) w p 0 p 1 p 2 d 0 e f 8 + 0.3 / -0.1 4 0.1 (0.157 0.004) 4 0.1 (0.157 0.004) 2 0.05 (0.079 0.002) 1.5 + 0.1 (0.059 + 0.004) 1.75 0.1 (0.069 0.004) 3.5 0.05 (0.138 0.002) a w n min w 1 w 2 max 180 (7) 8 (0.315) 60 (2.362) 8.4 + 2 (0.331 + 0.079) 14.4 (0.567) d 0 2 p p 0 1 p w fe direction of unreeling n w 1 2 w a ohay0324 label gurtvorlauf: leader: trailer: gurtende: 13.0 direction of unreeling 0.25 160 mm 160 mm 400 mm 400 mm sfh 7770
sfh 7770 2011-08-30 20 recommended solderpad design ma?e in mm/ dimensions in mm l?tbedingungen vorbehandlung nach jedec level 4 soldering conditions preconditioning acc. to jedec level 4 reflow l?tprofil fr bleifreies l?ten (nach j-std-020-d.01) reflow soldering profile for lead free soldering (acc. to j-std-020-d.01 ) 0.7 0.5 2.8 2.8 0.7 2.6 1.05 0 50 100 150 200 250 t ?c s t t p t t p 240 ?c 217 ?c 245 ?c 25 ?c l
sfh 7770 2011-08-30 21 pb-free (snagcu) assembly profile feature recommendation max. ratings ramp-up rate to preheat* ) 25c to 150c 2c / sec 3c / sec time t s from t smin to t smax (150c to 200c 100s min. 60sec max. 120sec ramp-up rate to peak* ) t smax to t p 2c / sec 3c / sec liquidus temperture t l 217c time t l above t l 80sec max. 100sec peak temperature t p 245c max. 260c time t p within 5c of the specified peak temperature t p - 5k 20sec min. 10sec max. 30sec ramp-down rate* t p to 100c 3c / sec 6c / sec maximum time 25c to peak temperature max. 8 min. all temperatures refer to the center of th e package, measured on the top of the component * slope calculation t/ t: t max. 5 sec; fulfillment for the whole t-range
sfh 7770 2011-08-30 22 published by osram opto semiconductors gmbh leibnizstr. 4, d-93055 regensburg www.osram-os.com ? all rights reserved. the information describes the type of component and shall not be considered as assured ch aracteristics. due to the special conditions of the manufacturing processes of sensor , the typical data or calculated correlations of technical parameters can only reflect statistical figu res. these do not necessarily correspond to the actual parameters of each single product, which could differ from t he typical data and calculated correlations or the typical characteristic line. if requested, e.g. because of technical improvem ents, these typ. data will be changed withou t any furthe r notice. terms of delivery and rights to change design reserv ed. due to technical requirements components may contain dangerous substances. for information on the types in question please contact our sales organization. packing please use the recycling operators known to you. we can also help you ? get in touch with your nearest sales office. by agreement we will take packing material back, if it is sorted. you must bear the costs of tr ansport. for packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs incurred. components used in life-support devices or system s must be expressly authorized for such purpose! critical components 1 , may only be used in life-support devices or systems 2 with the express written approval of osram os. 1 a critical component is a component usedin a life-support device or system whose failure can reasonably be expected to cause the failure of that life-support de vice or system, or to affect its safety or effectiveness of that device or system. 2 life support devices or systems are intended (a) to be impl anted in the human body, or (b) to support and/or maintain and sustain human life. if they fail, it is reasonable to assume that the health of the user may be endangered.

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