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-4130 30 khz ltop-4133 33 khz ltop-4136 36 khz ltop-4137 36.7 khz ltop-4138 38 khz ltop-4140 40 khz ltop-4156 56 khz ?? description the ltop-41.. ? series are miniaturized receivers for infrared remote control systems. pin diode and preamplif ier are assembled on lead frame, the epoxy package is designed as ir filter. the demodulated output si gnal can directly be decoded by a microproce ssor. the main benefit is the reliable function even in disturbed ambient and the protection against uncontrolled output pulses. ?? features ? photo detector and preamplifier in one package ? internal filter for pcm frequency ? ttl and cmos compatibility ? output active low ? improved shielding against electrical field disturbance ? small size package ? high immunity against ambient light ? enhanced data rate of 2400 bit/s ? suitable burst length 6 cycle/burst ?? 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-41.. series data sheet page : 1 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only ?? block diagram gnd input pin agc 3 2 demodu- lator band pass control circuit 30k ? 1 out vs ?? absolute maximum ratings (ta mb =25 o c ) parameter test conditions s y mbol value unit su pp l y volta g e ( pin3 ) v s -0.3?5.5 v su pp l y current ( pin3 ) i s 5 ma out p ut volta g e ( pin1 ) v o -0.3?5.5 v out p ut current ( pin1 ) i o 5 ma junction temperature t j 100 o c storage temperature t stg -25?+85 o c operating temperature t amb -25?+85 o c power consumption (t amb=25 o c) p tot 30 mw solderin g tem p erature t 10s , 1mm from case t sd 260 o c ?? basic characteristics (tamb=25 o c ) parameter test conditions symbol min typ max unit supply current (pin3) vs=5v, ev=0 i sd 1.2 ma supply voltage (pin3) vs 2.7 5.5 v output voltage low (pin 1) iosl=0.5ma, ee=0.7mw/m 2 v osl 0.25 v transmission distance ev=0, test signal see fig 8, ir diode lte-3371, i f =250ma l 35 m irradiance (30-40khz) pulse width tolerance: tpi-5/fo lite-on technology corporation property of lite-on only ?? a pp lication circuit *) recommended to suppress power supply disturbances. 2 lite-on lte-3371 application circuit series pin 1 ltop-41.. 3 gnd c ? r1 100 *) 4.7 f*) ? r2>10k optional **) +vs ?? suitable data format the circuit of the ltop-41.. is designed in that way that unexpected output pulses due to noise or disturbance signals are avoided. a bandpass filter, an integrator stage and an automatic gain control are used to suppress such disturbances. the distinguishing marks between data signal and disturbance 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 6 cycles/burst or longer ? after each burst which is between 6 cycles and 70 cycles a gap time of at least 10 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 same length as the burst. ? up to 2200 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, rcmm code r-2000 code, recs-80 code. when a disturbance signal is applied to the ltop-41.. it can still receive 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-41.. 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 (an example of th e signal modulation is shown in figure below). part no. : ltop-41.. 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 j 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 /7 0 responsivity 0.4 0.8 1.2 1.6 2.0 2.0 2 f (e)= f 015304560 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 100 110 1000 10000 input burst duration 0.10 0.05 0 0.25 0.15 0.20 0.30 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 =1.4klx (stand.illum.a, t=2855k) =8.2klx (daylight, t=5900k) 2 ~ ~ part no. : ltop-41.. series data sheet page : 4 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only fig.12 directivity (v=vertical; h=horizontal) 0.5 0.3 0.1 0.2 0.4 0.6 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 020 10 o oo 80 o 90 o 70 60 o o 50 40 o o 30 o 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 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 lte-3371, i =0.4a, n=6 pulses, f=f , t=10ms) f0 t * p1 t t t * > 6/f is recommended for optimal fuction p1 v t td 1 t po 2 0 output signal 1) 3/f < td < 9/f 0 2) t -5/f lite-on technology corporation property of lite-on only ?? dimensions notes: 1. all dimensions are in millimeters (inches). 2. tolerance is : 0.3mm (0.012") unless otherwise noted. part no. : ltop-41.. 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-41.. series data sheet page : 7 of 8 bns-od-c131/a4
lite-on technology corporation property of lite-on only ?? product designation and sel ection type designation code l t o p - 4 1 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-41.. series data sheet page : 8 of 8 bns-od-c131/a4
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