lite-on technology corporation property of lite-on only photo modules for pcm remote control systems available types for different carrier frequencies type fo type fo ltop-4830 30 khz ltop-4833 33 khz ltop-4836 36 khz ltop-4837 36.7 khz ltop-4838 38 khz ltop-4840 40 khz ltop-4856 56 khz description the ltop-48.. ? series are miniaturized receivers for infrared remote control systems. pin diode and preamplifier are assembled on lead frame, the epoxy package is designed as ir filter. the demodulated output signal can directly be decoded by a microprocessor. the main benefit is the reliable function even in disturbed ambient and the protection against uncontrolled output pulses. features special features ? photo detector and preamplifier in one package ? internal filter for pcm frequency ? ttl and cmos compatibility ? output active low ? improved shielding agai nst electrical field disturbance ? suitable burst length 10 cycle/burst ? small size package ? enhanced immunity against all kinds of disturbance light ? no occurrence of disturbance pulses at the output ? short settling time after power on ? continuous data transmission possible (800 bit/s) applications ? tv sets ? video recorders ? sat receivers ? dvd ? slide projectors ? audio components ? air conditioner ? data communication ? game equipment ? sensors and light barrier systems for long distances part no. : ltop-48.. series data sheet page : 1 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only block diagram circuit control pass band pin input agc lator demodu- 2 ? 40k 1 3 vs gnd out rpu absolute maximum ratings (t amb =25 o c ) parameter test conditions s y mbol value unit su pp l y volta g e v s -0.3?5.5 v su pp l y current i s 5 ma out p ut volta g e v o -0.3?5.5 v out p ut current i o 5 ma junction tem p erature t j 100 o c stora g e tem p erature t stg -25?+85 o c o p eratin g tem p erature t amb -25?+85 o c power consum p tion ( t amb 85 o c ) p tot 50 mw solderin g tem p erature t 10s , 1mm from case t sd 260 o c basic characteristics (t amb =25 o c) parameter test conditions symbol min typ max unit vs=5v, ev=0 i sd 0.8 1.1 1.5 supply current (pin3) vs=5v,ev=40klx,sunlight i sh 1.4 ma supply voltage (pin3) vs 4.5 5.5 v output voltage low iosl=0.5ma, ee=0.7m w/m 2 v osl 0.25 v transmission distance ev=0, test signal see fig 7, ir diode lte-3271, i f =250ma l 35 m irradiance (56khz) pulse width tolerance: tpi-5/fo< tpo lite-on technology corporation property of lite-on only application circuit lte-3271 2 ltop-48.. lite-on series pin r1 220 *) 1 4.7 f*) 3 r2 >2.4k optional gnd +vs(+5v) c **) *) recommended to suppress power supply disturbances **) the output voltage should not be hold continuously at a voltage below 3.3v by the external circuit. suitable data format the circuit of the ltop-48.. is designed in that way that unexpected output pulses due to noise or disturbance signals are avoided. a bandpassfilter, an integr ator stage and an automatic gain control are used to suppress such disturbances. the distinguishing marks between data signal and disturbanc e signal are carrier frequency, burst length and duty cycle. the data signal should fulfill the following condition: ? carrier frequency should be close to center frequency of the bandpass (e.g. 38khz) ? burst length should be 10 cycles/burst or longer ? after each burst which is between 10 cycles and 70 cycles a gap time of at least 14 cycles is necessary ? for each burst which is longer than 1.8ms a corresponding gap time is necessary at some time in the data stream. this gap time should be at least 4 times longer than the burst. ? up to 800 short bursts per second can be received continuously. some examples for suitable data format are: nec code, toshiba micom format, sharp code, rc5 code, rc6 code, r-2000 code. when a disturbance signal is applied to the ltop-48.. it can still recei ve the data signal. however the sensitivity is reduced to that level that no unexpected pulses will occur. some examples for such disturbance signals which are suppressed by the ltop-48.. are: ? dc light (e.g. from tungsten bulb or sunlight) ? continuous signal at 38khz or at any other frequency ? signals from fluorescent lamps with electronic ballast with high or low modulation (see fig. a or fig. b) part no. : ltop-48.. series data sheet page : 3 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only typical characteristics (t amb =25 unless otherwise specified) fig.3 sensitivity in bright ambient tamb - ambient temperature( c) fig.6 sensitivity vs. ambient temperature fig.5 sensitivity vs. f / f - relative frequency fig.1 frequency dependence of e / e - r e l . r e s p o n s i t i v i t y -30 -15 5.0 4.0 3.0 2.0 1.0 0 0 0.2 1.0 0.7 0.01 1 0.1 10 0 e - t h r e s h o l d i r r a d i a n c e ( m w / m ) fig.4 sensitivity vs. e - field strength of disturbance (kv/m) 0 v - ac voltage on dc supply voltage(mv) 0.4 0.6 0.8 0.8 0.9 1.0 1.1 1.2 1.3 0 f = f 5% 0 f(3db)=f /10 0 responsivity 0.4 0.8 1.2 1.6 2.0 2.0 2 f (e)= f 01530 45 60 75 90 e - dc irradiance(w/m ) e - t h r e s h o l d i r r a d i a n c e ( m w / m ) e m i n 2 0.10 0.01 100.00 10.00 1.00 0.5 1.5 2.5 3.5 4.5 e m i n e sensitivity in dark ambient correlation with ambient light sources 0.4 0.8 1.2 1.6 0 e m i n ee - irradiance(mw/m ) fig.2 sensitivity in dark ambient t - o u t p u t p u l s e l e n g t h ( m s ) 0.1 p o 100 1 10 1000 10000 input burst duration 0.5 0.3 0.1 0.2 0.4 0 0.9 0.7 0.6 0.8 1.0 2 =950nm, optical test signal, fig.7 0.1 1 10 100 1000 srms e - t h r e s h o l d i r r a d i a n c e ( m w / m ) e m i n 2 f = f 0 10khz 1khz 100hz 2 ambient, =950nm e - t h r e s h o l d i r r a d i a n c e ( m w / m ) e m i n 2 1.0 0.8 0.6 0.7 0.9 0.4 0.2 0.1 0.3 0.5 0 electric field disturbances supply voltage disturbances (disturbance effect):10w/m^2~1.4klx (stand. illum. a, t=2855k)~8.2klx (daylight, t=5900k) part no. : ltop-48.. series data sheet page : 4 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only fig.12 directivity 0.7 0.8 0.9 1.0 r e l a t i v e r a d i a n t i n t e n s i t y d - relative transmission distance rel s ( ) - r e l a t i v e s p e c t r a l s e n s i t i v i t y 1150 fig.11 relative spectral sensitivity 750 0.6 r e l 0.2 0 0.4 0.8 1.2 1.0 1050 950 850 - wavelength(nm) vs. wavelength fig.9 max. envelope duty cycle vs. burstlength 0.5 e n v e l o p e d u t y c y c l e 40 burstlength [number of cycles/burst] 0.3 0.1 10 0.2 0.4 0 20 30 80 50 60 70 90 f=38khz 0.7 0.6 0.8 =950nm, optical test signal, fig.8 ton fig.10 output pulse diagram ee - irradiance(mw/m ) 10 1 0.1 1.0 0.8 0.6 0.7 0.9 0.4 0.2 0.1 0.3 0.5 t o n , t o f f - o u t p u t p u l s e l e n g t h ( m s ) 0 1000 10000 100 2 optical test signal ee (ir diode tsal6200, i =0.4a, 30 pulses, f=f , t=10ms) f0 t * p1 t t t * > 10/f is recommended for optimal fuction p1 v t td 1 t po 2 0 output signal 1) 7/f < td < 15/f 0 2) t =t 6/f po pi optical test signal t=60ms ee 600 s t v oh o ol v 600 s t o v ol oh v v ton output signal toff fig.7 output function fig.8 output function toff 0.9 0.6 0.3 0.5 h 0.7 0.8 0.4 0.2 0.1 v o 80 90 o 70 o 60 o 1.0 10 20 0 ooo 50 o 40 o 30 o part no. : ltop-48.. series data sheet page : 5 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only dimensions (1) ( 2 )( 3 ) notes: 1. all dimensions are in millimeters (inches). 2. tolerance is : 0.3mm (0.012") unless otherwise noted. part no. : ltop-48.. series data sheet page : 6 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only reliability test items and conditions test items test conditions failure judgment criteria samples(n) /defective(c) high temperature storage ta:85c test time:1000hrs n=22 c=0 low temperature storage ta:-25c 5c test time:1000hrs n=22 c=0 operation life ta: 85c vcc=5v test time:240hrs n=22 c=0 high temp. & high humid. storage ta:40c 5c rh:90% 5 test time:240hrs n=22 c=0 temperature cycling -25c~25c~85c~25c 30min 5min 30min 5min test cycles: 20cycles n=22 c=0 vibration 10 to 55 hz/sweep 1min overall amplitude:1.5mm x,y,z direction, 2hrs each n=11 c=0 soldering heat t. sol:260c 5c dwell time:5 1sec/ 2 times n=11 c=0 solderability t. sol:230c 5c dwell time:5 1sec n=11 c=0 lead pull weight:500g, direction axial test time:30secs n=11 c=0 lead bend weight:250g, bend each lead 0-90-0, 2 times n=11 c=0 mechanical shock weight:100g, 6ms/3 directions/3 times performance test requirement and criteria given in page 2 should be satisfied. n=11 c=0 part no. : ltop-48.. series data sheet page : 7 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only product designation and selection type designation code l t o p - 4 8 lite-on specials optoelectronics packing t:tube; b:bag; r:reel photomodule lead configuration s:standard lead package s:standard side view frequencies 30, 33, 36, 36.7, 38, 40, 56 khz series 21..,22..,41..,48.. part no. : ltop-48.. series data sheet page : 8 of 8 bns-od-c131/a4
|
