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2013-07-09 1 draft - for reference only. subject to change without notice. 2007-05-23 ambient light and proximity sensor with integrated 850nm ir emitter umgebungslicht- und proximity sensor mit integriertem 850nm ir emitter version 0.1 sfh 7776 features: besondere merkmale: ? proximity sensor (ps) - detection range up to 160 mm - 850 nm ir emitter integrated in package - programmable pulse current up to 200 ma - no separator needed if placed <0.4mm behind glass window, windo w thickness<1.0 mm ? n?herungssensor (ps) - detektionsbereich bis zu 160mm - 850 nm emitter, im geh?use integriert - programmierbarer pulsstrom bis 200 ma - funktion ist auch bei abdeckung mit einem glasfenster gegeben (abstand des glases <0.4mm, fensterdicke <1.0mm) ? ambient light sensor (als) - detection range 0.0022 - 73000 lx; - 50hz/60hz flicker noise suppression ? umgebungslichtsensor (als) - als-bereich 0.0022 - 73000 lx - unterdrckung von 50hz/60hz basierten umgebungslichtst?rungen ? i 2 c interface (max. 400khz) ? i 2 c interface (max. 400khz) ? ps and als interrupt function ? interrupt funktion fr ps und als ? current consumption - typ. 0.8a in standby mode - typ 90a for als operation - typ 60a for ps operation ? stromverbrauch - typ 0.8a im standby modus - typ 90a im als modus - typ 60a im ps modus ? miniature package 4mm x 2.1mm x 1.35mm ? kleines geh?use 4mm x 2.1mm x 1.35mm applications anwendungen ? mobile phones ? mobiltelefone ? pdas and notebooks ? pdas und notebooks ? cameras ? kameras ? consumer products ? consumer-produkte
2013-07-09 2 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 ordering information bestellinformation application diagram ? bypass capacitors for vdd and vled are required for proper operation of the device. ? proposed size for the pull-up resistors rp1, rp2 and rp3 are 10kohm type: ordering code typ: bestellnummer sfh 7776 q65111a4188 100 nf 4.7 uf 100 nf 1.0 uf phone battery r p1 r p2 r p3 voltage regulator sda scl int v dd led_c led_a gnd ldr v io sda sfh 7776 (1) (2) (3) (4) (8) (7) (6) (5) scl v led gnd gnd v dd v int, pullup v int
version 0.1 sfh 7776 2013-07-09 3 draft - for reference only. subject to change without notice. ? pin description pin name function 1v dd power supply pin 2 scl i2c bus serial clock pin 3 gnd ground pin 4 led_a anode of the led 5 led_c cathode of the led 6 ldr led driver pin 7 int interrupt pin; open drain output; configured via i2c bus 8 sda i2c bus serial data pin
2013-07-09 4 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 short evaluation program i 2 c interface ? i/o-pins are open drain type and logic high level is set with external pull-up resistor ? sfh 7776 operates in slave mode. slave address is 0111001 (0x39h) ? designed for the i 2 c fast mode (400 kb/s) ? interrupt pin (int): open-drain output (like sda and scl) block diagram adress command action 0x42 0x3f set led pulse current to 200ma and als gain to x128 0x41 0x06 activate als & ps with a me asurement repetition time of 100ms wait 100ms 0x44 read data read lsb of proximity measurement data 0x45 read data read msb of proximity measurement data 0x46 read data read lsb of ambien t light measurement of vis diode 0x47 read data read msb of ambient light measurement of vis diode 0x48 read data read lsb of ambient light measurement of ir diode 0x49 read data read msb of ambien t light measurement of ir diode 8 analog / amplifier digital + data- register proximity ambient light i 2 c led driver 4 5 sda scl 7 6 int gnd v led cath 5 analog / amplifier digital + data- register proximity als vis i 2 c led driver 7 2 sda scl 3 1 1 4 8 int gnd v dd v dd led_a led_c als ir 8 6 ldr 8 analog / amplifier digital + data- register proximity ambient light i 2 c led driver 4 5 sda scl 7 6 int gnd v led cath 5 analog / amplifier digital + data- register proximity als vis i 2 c led driver 7 2 sda scl 3 1 1 4 8 int gnd v dd v dd led_a led_c als ir 8 6 ldr
version 0.1 sfh 7776 2013-07-09 5 draft - for reference only. subject to change without notice. measurement modes if v dd exceeds the threshold voltage, the sensor will switch from off mode to stand-by mode. as shown in the transition-diagram above it is possible to switch between all modes without any restriction. mode description off the device is inactive. other units may use the i 2 c bus without any restrictions; i/o pins and int are in high z state. there is no sink current through the led stand-by this is the initial mode after power-up . i dd is typ. 0.8 ? a. no measurement is performed. device can be activated by i 2 c bus communication. data registers can be read and written. als / ps free - running measurements are triggered internally by the sfh 7776. stand-by / active mode for als and ps, measurement times, interrupt options and led current can be adjusted via i2c register. measurement results can be read from the data register, the status from the interrupt register. stand-by off proximity sensor (ps) and ambient light sensor (als) free - running proximity sensor (ps) free - running ambient light sensor (als) free - running
2013-07-09 6 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 maximum ratings (t a = 25 c) parameter symbol values unit storage temperature range t stg -40 ... 100 c operating temperature range t op -40 ... 85 c maximum supply voltage (between v dd and gnd) v dd 4.5 v maximum voltage of sda, scl to gnd v dig 4.5 v maximum voltage of int to gnd v int 7 v maximum voltage of vled to gnd v led 7 v maximum current of int and sda i int / i sda 7 ma electrostatic discharge - human body model (according to ansi / esda jedec js-001-2011; class2) esd 2kv
version 0.1 sfh 7776 2013-07-09 7 draft - for reference only. subject to change without notice. operating conditions (t a = 25 c) parameter symbol value unit min. typ. max. supply voltage v dd 2.3 2.5 3.6 v ripple on supply voltage (v ddmin and v ddmax must stay in the v dd range, dc ... 100mhz) v dd,rip 200 mv vdd threshold voltage (voltage to initiate the start-up procedure) v dd; th 1.7 2.3 v voltage for int v int 5.5 v voltage for scl and sda v scl v sda 1.65 3.6 v sda and scl input low level voltage v scl_low v sda_low 0.54 v sda and scl input high level voltage v scl_high v sda_high 1.26 v sda and scl input current i scl_low i sda_low -10 10 a int output low level voltage (i int = 3 ma) (when int is active: v int = low when int is inactive: v int = high) v int_low 0.4 v supply voltage led 1) 1) 2.3 v is only valid for an led current setting up to 100ma; if the sensor is driven with led currents >100ma the vled voltage should be higher than 3.0v. v led 2.3 3.5 5.5 v ripple vled v led,rip 200 mv
2013-07-09 8 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 characteristics (t a = 25 c) parameter symbol value unit min. typ. max. general conditions for off mode v dd,off 0.5 v current consumption in off mode (v dd < 0.5v) i dd,off 0 ? a stand-by mode current consumption (mode_control(41h) = 0x00; v dd = 2.5v) i dd,stby 0.8 1.5 ? a proximity sensor (ps) led centroid wavelength (i led = 100ma) ? centroid 850 nm led spectral bandwidth (i led = 100ma) d ? 30 nm temperature coefficient of optical power of led tc -0.5 %/k iled on time for one measurement t led on 80 200 300 s led current, programmable v led > 2.3v for i led < 100ma v led > 3.0v for i led > 100ma i led 25 200 ma accuracy of led current source (als_ps_control: led current = 00b) i led 22.5 25 27.5 ma mean current consumption in ps mode (current consumption of the pulsed led is not included; mode_control(0x41h) = 0x03h; all other registers are default; v dd = 2.5v) i dd 60 150 a mean current consumption in ps mode during the 200s led pulse (t led on ) (current consumption of the pulsed led is not included) i dd 6.5 8.5 ma typical detection distance 1) kodak grey card 100x130mm2, r=90% (i led =200ma, v dd =2.5v, e v = 0lx; high threshold = 11 counts) h on 10 cm
version 0.1 sfh 7776 2013-07-09 9 draft - for reference only. subject to change without notice. 1) example of ps hysteresis the switching distance h is specified from top sensor surface to the reflector. typical none detection distance 1) kodak grey card 100x130mm2, r=90% (i led =200ma, v dd =2.5v, e v = 0lx low threshold = 8 counts) h off 12 cm ps sensor output with human skin reflector (i led =200ma, v dd =2.5v, h=0mm: skin directly on top of the sensor) ps out 850 counts temperature coefficient of the ps signal (i led =200ma, v dd =2.5v, r=90%, a reflector =10x13cm2, h=4cm) tk ps 0.15 %/k sfh 7776 reflector: (kodak grey card r=90%) h int voltage h_off h_on ? h,hys high low
2013-07-09 10 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 dimensions of proposed optical aperture (optical aperture: ir transmitting opening in cover glass) dimensions in mm pcb cover glass emitter ps & als detector 0.675 0.8 35 0.9 d d 0.45 ? aperture ? aperture sfh 7776 35 35 35 ir intransparent and low reflective cover (deep black) uhfrpphqghgdshuwxuhg pp 36 $/6 'hwhfwru 3lq (plwwhu ,5,qwudqvsduhqwdqg/rz 5hiohfwlyh&ryhu ghhseodfn 6)+ ,5wudqvsduhqwrshqlqj
version 0.1 sfh 7776 2013-07-09 11 draft - for reference only. subject to change without notice. characteristics (ta = 25c) parameter symbol value unit min. typ. max. ambient light sensors: als vis and als ir diode wavelength of max. sensitivity for als vis ? s max 560 nm spectral range of sensitivity (10% of s max ) of als vis ? s 10% 450 950 nm wavelength of max. sensitivity of als ir ? s max 880 nm spectral range of sensitivity (10% of s max ) of als ir ? s 10% 830 1050 nm illuminance measurement range is programmable (the maximum als sensitivity can be reached with the als high sensitivity mode --> 400ms als integration time) (mode_control (0x41h) = 0ah or 0bh) 0.0022 73000 lx als vis sensor output (1000lx; white led; v dd = 2.5v) ((mode_control (0x41h) = 08h) (als_ps_control (0x42h): gain = x1) als vis_out 750 900 1080 counts als ir sensor output (324w/cm2; ired 850 nm; v dd = 2.5v) ((mode_control (0x41h) = 08h) (als_ps_control (0x42h): gain = x1) als ir_out 460 550 660 counts als vis sensor output at darkness ((mode_control (0x41h) = 08h) (als_ps_control (0x42h): gain = x1) als vis_out 00 2counts als ir sensor output at darkness ((mode_control (0x41h) = 08h) (als_ps_control (0x42h): gain = x1) als ir_out 00 2counts
2013-07-09 12 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 resolution of the digital output signal based on gain settings for als vis: mode_control (0x41h) = 08h t int als = 100ms gain x1 gain x2 gain x 64 gain x 128 high sensitive mode: mode_control (0x41h) = 0ah t int als = 400ms gain x 128 (v dd = 2.5v; white led) - gain settings at als_ps_control (0x42h) als vis_out 1.1 0.55 0.018 0.009 0.002 lx/count typical temperature coefficient for als measurement (1000lx; white led; v dd = 2.5v) tc ev 0.2 %/k mean current consumption ((mode_control (0x41h) = 08h) (other registers are in default) i dd 90 150 a typical error by flicker noise (caused by bulbs (f=50 or 60hz) or fluorescent lamps) 3% parameter symbol value unit min. typ. max.
version 0.1 sfh 7776 2013-07-09 13 draft - for reference only. subject to change without notice. diagrams for als sensor relative spectral sensitivity of als vis s rel_vis = f( ) relative spectral sensitivity of als ir s rel_ir = f( ); 100% = maximum sensitivity of als vis diode 400 0 nm % ohf05597 20 40 60 80 100 rel s 10 30 50 70 500 600 700 800 900 1100 400 0 nm % ohf05606 20 40 60 80 100 rel s 10 30 50 70 500 600 700 800 900 1100
2013-07-09 14 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 als vis sensitivity ranges als vis output f(e v ); white led; f(sensitivity settings); t int : integration time (register 0x41h); x: gain settings (register 0x42h) direction characteristic of als vis diode s rel f( f ) ) ohf05598 0.001 1 als vis out / counts lx = 100 ms int t v e 0.1 10 1000 100000 10 100 1000 10000 100000 x = 64 = 100 ms x = 128 int t x = 128 = 400 ms t int = 100 ms int t x = 1 = 100 ms int t x = 2 ohf05605 0? 20? 40? 60? 80? 100? 120? 0.4 0.6 0.8 1.0 100? 90? 80? 70? 60? 50? 0? 10? 20? 30? 40? 0 0.2 0.4 0.6 0.8 1.0 ?
version 0.1 sfh 7776 2013-07-09 15 draft - for reference only. subject to change without notice. diagrams for ps sensor ps sensitivity f(r = reflectivity) v dd =2.5v; i led =200ma; t rep =100ms; a reflector = 10 x 13 cm2 ohf05600 0 h 1 ps sensor output / counts 50 100 150 200 250 10 100 1000 mm r = 4% r = 18% r = 90%
2013-07-09 16 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 ps sensitivity f(i led ) v dd =2.5v; t rep =100ms; r=90%; a reflector = 10 x 13 cm2 typical crosstalk free range v dd =2.5v; iled=200ma; t rep =100ms; glass without ink and one single ir transmissive opening ; ohf05601 0 h 1 ps sensor output / counts 50 100 150 200 250 10 100 1000 mm i = 50 ma led = 100 ma = 200 ma led i led i distance cover bottom surface 0 0 0.4 0.2 0 counts to top of the sensor 0.2 0.4 0.6 mm 0.8 1.0 1.2 thickness of coverglass 1.2 0.8 1 mm ohf05599 0.6 > 1 count 1 count
version 0.1 sfh 7776 2013-07-09 17 draft - for reference only. subject to change without notice. typical crosstalk free range v dd =2.5v; iled=200ma; t rep =100ms; glass without ink and a two separate ir transmissive openings for emitter and detector note for crosstalk free range: the displayed crosstalk free rang es for a single or two hole ir transmissive opening are measured with a clear cover.depending on the used ink the crosstalk level can di ffer and needs to be measured.osram os provides costumer related application support and meas urements - please contact your osram os marketing or sales partner, if support is required. as the measurement results show the typical performance of the sensor osram os recommends to design inn a additional safety guard in the distance of the cover bottom surface to the top of the sensor of 200m. e.g.: for a 0.5mm thick cover window with two holes and an a cceptable crosstalk level of 0 counts the distance of the cover window bottom surface to the top of the sensor should not exceed 0.6mm (typ. it would be 0.8mm)! distance cover bottom surface 0 0 to top of the sensor 0.2 0.4 0.6 0.2 0.4 0.6 0 counts mm thickness of coverglass 0.8 1 1.2 mm 0.8 1.0 1.2 1 count > 1 count ohf05609
2013-07-09 18 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 radiation characteristics of the ir emitter i rel f( f ) ohf05605 0? 20? 40? 60? 80? 100? 120? 0.4 0.6 0.8 1.0 100? 90? 80? 70? 60? 50? 0? 10? 20? 30? 40? 0 0.2 0.4 0.6 0.8 1.0 ?
version 0.1 sfh 7776 2013-07-09 19 draft - for reference only. subject to change without notice. diagrams for i dd current consumption current consumption i dd in standby mode i dd = f(v dd ); register 0x41= 0x00 current consumption i dd in ps mode i dd = f(v dd ); register 0x41= 0x03 current consumption i dd in als mode i dd = f(v dd ); register 0x41= 0x08 2.2 i ohf05602 dd v dd ? v 0.5 2.5 2.8 3.1 3.4 3.7 1.0 1.5 2.0 2.5 3.0 3.5 4.5 2.2 i ohf05603 dd v dd ? v 0 2.5 2.8 3.1 3.4 3.7 20 40 60 80 100 120 2.2 i ohf05604 dd v dd ? v 0 2.5 2.8 3.1 3.4 3.7 20 40 60 80 100 120 160
2013-07-09 20 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 register system_control register (0x40h) the system_control register is used to control the software (sw) reset and the interrupt function (int). manufacturer id an d part id can be read. mode_control register (0x41h) control of ps and als operating modes and time settings. repetition time is the time between two separate me asurements. integration time is the duration for one measurement. als high sensitivity modes are 1010 and 1011 with an increased integration time of 400ms. in ps operating mode: ?normal mode? only one ps measurement is performed during one ps repetition time. in ps operating mode ?twice mode? two independent ps measurement are performed within one ps repetition time. both measurements are independent and can trigger the interrupt. this feature can be used to decrease the interrupt update time if the persistence function (register 0x43h) is used. r/w-register 0x40 bit 7 6 5 4 3 2 1 0 sw reset int reset manufacturer id (read only) part id (read only) default 0 initial reset is not started 0 int pin status is not initialized 001 001 0 initial reset is not started 0 int pin status is not initialized 1 initial reset started 1 int pin become inactive (high impedance )
version 0.1 sfh 7776 2013-07-09 21 draft - for reference only. subject to change without notice. . als_ps_control register (0x42h) als and ps control of set the ps output mode, the als gain and the led current. in the ?infrared dc level output? ps mode (bit <6> = 1) the sensor measures the infrared dc ambient level. the proximity value of the reflected signal is not available in this mode. r/w-register 0x41 bit 7 6 5 4 3 2 1 0 repetition / integration time repetition time reserved ps operating mode als ps default 0 normal mode 0000 standby standby 0 normal mode 0000 standby standby 1 twice mode 0001 standby 10ms 0010 standby 40ms 0011 standby 100ms 0100 standby 400ms 0101 100ms / 100ms standby 0110 100ms / 100ms 100ms 0111 100ms / 100ms 400ms 1000 400ms / 100ms standby 1001 400ms / 100ms 100ms 1010 400ms / 400ms standby 1011 400ms / 400ms 400ms 1100 50ms / 50ms 50ms rest forbidden r/w-register 0x42 bit 7 6 5 4 3 2 1 0 reserved (read only) ps output als gain for als vis and als ir led current als vis als ps default write 0 0 proximity output 0000 x1 x1 11 200ma
2013-07-09 22 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 persistence register (0x43h) settings for the interrupt activation and of the persistence interrupt function. persistence function is only valid for the ps measurements. 0 proximity output 0000 x1 x1 00 25 ma 1 infrared dc level output 0100 x2 x1 01 50 ma 0101 x2 x2 10 100 ma 1010 x64 x64 11 200 ma 1110 x128 x64 1111 x128 x128 rest forbidden r/w-register 0x43 bit 7 6 5 4 3 2 1 0 reserved (read only) persistence default 0000 0001 interrupt status is updated after each measurement r/w-register 0x42 bit 7 6 5 4 3 2 1 0 reserved (read only) ps output als gain for als vis and als ir led current
version 0.1 sfh 7776 2013-07-09 23 draft - for reference only. subject to change without notice. ps_data_lsbs register (0x44h) lsb of the ps output. ps_data_msbs register (0x45h) msb of the ps output. 0000 interrupt becomes active after each measurement (the mode indicates that a ps or als measurement has been finished and can be read via the register. it is independent of the als & ps measurement value and threshold settings) 0001 interrupt status is updated after each measurement (the interrupt status is updated i ndependently after each measurement. active or inactive status of the interrupt is depe nding on the values of the last measurement in combination with the interrupt settings :?interrupt mode? (register 0x4ah) and ?thresholds? register 0c4ch and following.) 0010 interrupt status is updated if two consecutive threshold judgement are the same (the interrupt status only changes if th e interrupt judgement of 2 consecutive measurement results are the same and diffe rent to the current interrupt status.) 0011 ... 1111 interrupt status is updated if threshold judgement are the same over consecutive set times (3 .. 15) (this is the same procedure like in the 0010 persistence mode, but instead of 2 consecutive threshold judgments more are needed (3 to 15 depending on the setting) to change th e interrupt status.) e.g.: 1010: 10 measurement results in a row ne ed to fulfill the interrupt judgement to update the interrupt status r-register 0x44 bit 7 6 5 4 3 2 1 0 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 default00000000 r-register 0x45 bit 7 6 5 4 3 2 1 0 not used not used not used not used 2 11 2 10 2 9 2 8 default00000000 r/w-register 0x43 bit 7 6 5 4 3 2 1 0 reserved (read only) persistence
2013-07-09 24 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 als_vis_data_lsbs register (0x46h) lsb of the als vis output. als_vis_data_msbs register (0x47h) msb of the als vis output. als_ir_data_lsbs register (0x48h) lsb of the als ir output. als_ir_data_msbs register (0x49h) msb of the als ir output. r-register 0x46 bit 7 6 5 4 3 2 1 0 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 default00000000 r-register 0x47 bit 7 6 5 4 3 2 1 0 2 15 2 14 2 13 2 12 2 11 2 10 2 9 2 8 default00000000 r-register 0x48 bit 7 6 5 4 3 2 1 0 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 default00000000 r-register 0x49 bit 7 6 5 4 3 2 1 0 2 15 2 14 2 13 2 12 2 11 2 10 2 9 2 8 default00000000
version 0.1 sfh 7776 2013-07-09 25 draft - for reference only. subject to change without notice. interrupt function se tting register (0x4ah) setting of the interrupt functions. ps int and als int status (bit <7;6>): directly after reading th e register the interrupt status for ps and als and the int pin of the sensor is automatically set back to inactive status independent on the meas- urement results. ps int mode (bit <5;4>) : the int modes are only valid for the ps interrupt function. for description please see extra chapter ?ps int modes? (at the end of the register chapter). int assert (bit <3>) : is used to adjust the sensor behaviour to the used micro controller trigger settings. in case a repeated trigger in low state is needed the int assert can be set to 1. int trigger (bit <2>) : defines the source / so urces for the interrupt. int latched (bit <1>) : in latched mode the interrupt status stays active after the first activation. it is only released by reading the status are performing an interrupt reset. . ps_th_lsbs register (0x4bh) lsb for the ps threshold ?high?. r/w-register 0x4a bit 7 6 5 4 3 2 1 0 ps int status (read only) als int status (read only) ps int mode int assert int latch int trigger default 0 inactive 0 inactive 00 ps_th is only active 0 int ?l? is stable 0 in t is latched 00 inactive 0 inactive 0 inactive 00 ps_th (ps high threshold 0x4bh & 0x4ch) is only active 0 int ?l? is stable if newer measurement results is also interrupt active 0 int is latched until int register is read or initialize 00 int pin is inactive 1 active 1active 01 ps_th & ps_tl (ps high & low threshold) are active as hysteresis 1 int ?l? is de-assert and re-assert if newer measurement results is also interrupt active 1int is updated after each measurement 01 triggered by ps only 10 ps_th & ps_tl (ps high & low threshold) are active as outside detection 10 triggered by als only 11 forbidden 11 triggered by ps or als r/w-register 0x4b bit 7 6 5 4 3 2 1 0 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 default11111111
2013-07-09 26 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 ps_th_msbs register (0x4ch) msb for the ps threshold ?high?. ps_tl_lsbs regi ster (0x4dh) lsb for the ps threshold ?low?. ps_tl_msbs register (0x4eh) msb for the ps threshold ?low?. als_vis_th_lsbs register (0x4fh) lsb for the als vis threshold ?high?. als_vis_th_msbs register (0x50h) msb for the als vis threshold ?high?. r/w-register 0x4c bit 7 6 5 4 3 2 1 0 2 11 2 10 2 9 2 8 default00001111 r/w-register 0x4d bit 7 6 5 4 3 2 1 0 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 default00000000 r/w-register 0x4e bit 7 6 5 4 3 2 1 0 2 11 2 10 2 9 2 8 default00000000 r/w-register 0x4f bit 7 6 5 4 3 2 1 0 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 default11111111 r/w-register 0x50 bit 7 6 5 4 3 2 1 0 2 15 2 14 2 13 2 12 2 11 2 10 2 9 2 8 default11111111
version 0.1 sfh 7776 2013-07-09 27 draft - for reference only. subject to change without notice. als_vis_tl_lsbs register (0x51h) lsb for the als vis threshold ?low?. als_vis_tl_msbs register (0x52h) msb for the als vis threshold ?low?. int modes the interrupt function compares als and ps measurement values with the current interrupt threshold level. ps and als vis interrupt status is readable via register 0x4ah or at the int pin of the sensor. the interrupt persistence function is only valid for ps measurements and is defined at register (0x43h). the int pin of the sfh 7776 is an open drain output and should be pulled-up to v i/o by an external resistor. when vdd is supplied to the sensor the int pin is per default in high ohmic (inactive) state. the int status becomes inactive by writing an int reset command, reading the int status register or performing a software reset. the int status stays in its last state when the sensor is set to the standby mode. in the int active state ?low? the sensor consumes ~25a extrra current. therefore osram recommends to set the int state to high impedance before setting the sensor in standby mode. below the als and ps int modes are described for the unlatched mode. in latched mode the switching back to the ?inactive? int state is depending on an interrupt reset or on reading out the int status reg- ister. als int mode: the als vis threshold levels high (register 0x4fh & 0x50h) and low (register 0x4fh & 0x50h) are only valid for the als vis measurement values. the als vis int mode is fixed and can not be adapted via register. the thresholds define a window with the following functionality: als int is active, if the als vis measurement values are outside the window als int is inactive, if the als vis measur ement results are inside the window. ps int modes: bit <5;4> of interrupt function setting register (0x4ah) 00 ps_th is active only: the int state is active, if the ps measurement result is equal or higher than the set ps_th high threshold. r/w-register 0x51 bit 7 6 5 4 3 2 1 0 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 default00000000 r/w-register 0x52 bit 7 6 5 4 3 2 1 0 2 15 2 14 2 13 2 12 2 11 2 10 2 9 2 8 default00000000
2013-07-09 28 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 the int state is inactive, if the ps measurement re sult is lower than the set ps_th high thresh- old. 01 ps_th & ps_tl (ps high & low thre shold) are active as hysteresis: ps_th and ps_tl are working as a hysteresis. if the ps measurement signal is higher than the ps high threshold (ps_th) the int state is switched to active. if the ps measurement signal is lower than the ps low threshold (ps_tl) the int state is inactive. if once the interrupt signal becomes active, the int status is kept active until the measurement re sult becomes less than the ps_tl register value. 10 ps_th & ps_tl (ps high & low threshol d) are active as outside detection: in case of ?ps outside detection? mode interrupt signal inactive means that the measurement result is within the registered threshold level and the interrupt signal active means that the meas- urement result is out of registered threshold level. ps signal ps int active ps int inactive ps_th ps signal ps int active ps int inactive ps_th ps signal ps int active ps int inactive ps_th ps_tl ps signal ps int active ps int inactive ps_th ps_tl ps signal ps int active ps int inactive ps_th ps_tl
version 0.1 sfh 7776 2013-07-09 29 draft - for reference only. subject to change without notice. the emitter is located in the cavity between pad 4 an d 5. the orientation of the sensor can be detected by the asymmetrical channel on the sensor top side. for optical aperture design please see page 8. package outline dimensions in mm / ma?e in mm. package chip on board
2013-07-09 30 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 method of taping dimensions in mm (inch). / ma?e in mm (inch).
version 0.1 sfh 7776 2013-07-09 31 draft - for reference only. subject to change without notice. recommended solder pad design dimensions in mm (inch). / ma?e in mm (inch). cleaning / washing in general, osram opto semiconductors does not recommend a wet cleaning process for the components SFH7776 as the package is not hermetically sealed. due to the open design, all kind of cleaning liquids can infiltrate the package and cause a degradation or a complete failure of the led or asic. it is also recommended to prevent penetration of organic substances from the environment which could interact with the hot surfaces of the operating chips. ultrasonic cleaning is generally not recommended for all types of leds (see also the application note "cleaning of leds"). as is standard for the electronic industry, osram opto semiconductors recommends using low-residue or no-clean solder paste, so that pcb cleaning after soldering is no longer required. in any case, all materials and methods should be tested before hand in order to determine whet her the component will be damaged in the process.
2013-07-09 32 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 reflow soldering profile preconditioning: je dec level 3 acc. to jedec s-std-020-d 0 0 s oha04525 50 100 150 200 250 3 00 50 100 150 200 250 3 00 t t ?c s t t p t t p 240 ?c 217 ?c 245 ?c 25 ?c l oha04612 profile feature profil-charakteristik r a mp- u p r a te to prehe a t* ) 25 ? to 150 ? 2 3 k/ s time t s t s min to t s m a x t s t l t p t l t p 100 120 60 10 20 3 0 8 0 100 217 2 3 245 260 3 6 time 25 ? to t p time within 5 ? of the s pecified pe a k temper a t u re t p - 5 k r a mp-down r a te* t p to 100 ? all temper a t u re s refer to the center of the p a ck a ge, me asu red on the top of the component * s lope c a lc u l a tion d t/ d t: d t m a x. 5 s ; f u lfillment for the whole t-r a nge r a mp- u p r a te to pe a k* ) t s m a x to t p liq u id us temper a t u re pe a k temper a t u re time ab ove liq u id us temper a t u re symbol symbol unit einheit pb-free (snagcu) assembly minimum maximum recommendation k/ s k/ s s s s s ? ? 4 8 0
version 0.1 sfh 7776 2013-07-09 33 draft - for reference only. subject to change without notice. disclaimer disclaimer osram os assumes no liability whatsoever for any use of this document or its conten t by recipient including, but not limited to, for any design in activities based on this preliminary draft version. osram os may e.g. decide at its sole discretion to stop de veloping and/or finalizing the underlying design at any time. attention please! the information describes the type of component and shall not be considered as assured characteristics. terms of delivery and rights to change design reserved. due to technical requiremen ts components may contain dangerous substances. for information on the types in question please contact our sales organization.?if printed or downloaded, please find the latest version in the internet. packing please use the recycling op erators known to you. we can also help you ? get in to uch with your nearest sales office. ?by agreement we will take packing material back, if it is sorted. you must bear the costs of transport. 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 systems must be expressly authorized for such purpose! critical components* may on ly be used in life-support devices** or systems with the express written approval of osram os. *) a critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that life-support device or system, or to affect its safety or the effectiveness of that device or system. **) life support devices or systems are intended (a) to be implanted 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 and the life of the user may be endangered. osram os bernimmt keine wie auch immer geartete haftung fr die nutzung dieses dokuments und seines inhaltes durch den empf?nger, insbesondere nicht fr irgendwelche design-akt ivit?ten, die auf dieser vorl?ufigen entwurfsversion basieren. osram os beh?lt sich beispielsweise auch vor, jederzeit die weiter- und fertigentwickl ung des zugrundeliegenden designs einseitig einzustellen. bitte beachten! lieferbedingungen und ?nderungen im design vorbehalten. aufgrund technischer anforderungen k?nnen die bauteile gefahrst offe enthalten. fr weitere informationen zu gewnschten bauteilen, wenden sie sich bitte an unseren ve rtrieb. falls sie dieses datenblatt ausgedruckt oder heruntergeladen haben, finden sie die aktuellste version im internet. verpackung benutzen sie bitte die ihne n bekannten recyclingwege. wenn diese nicht bekannt sein sollten, wenden sie sich bitte an das n?chstgelegene vertriebsbro. wir nehmen das verpackungsmaterial zurck, falls dies vereinbart wurde und das material sortiert ist. sie tragen die transportkosten. fr verpackungsmaterial, das unsortiert an uns zurckgeschickt wird oder das wir nicht annehmen mssen, stellen wir ihnen die anfallenden kosten in rechnung. bauteile, die in lebenserhaltenden apparaten und systemen eingesetzt werden, mssen fr diese zwecke ausdrcklich zugelassen sein! kritische bauteile* drfen in lebenserhaltenden apparaten und systemen** nur dann eingesetzt werden, wenn ein schriftliches einverst?ndnis von osram os vorliegt. *) ein kritisches bauteil ist ein bauteil, das in lebenserhaltenden apparaten oder systemen eingesetzt wird und dessen defekt voraussichtlich zu einer fehlfunktion dieses lebenserhaltenden apparates oder systems fhren wird oder die sicherheit oder effektivit?t dieses apparates oder systems beeintr?chtigt. **) lebenserhaltende appara te oder systeme sind fr (a) die implantierung in de n menschlichen k?rper oder (b) fr die lebenserhaltung bestimmt. falls sie versagen, kann davon ausgegangen werden, dass die gesundheit und das leben des patienten in gefahr ist.
2013-07-09 34 draft - for reference only. subject to change without notice. version 0.1 sfh 7776 published by osram opto semiconductors gmbh leibnizstra?e 4, d-93055 regensburg www.osram-os.com ? all rights reserved.

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