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ltm-99 series features compact package high immunity from ambient light good performance against electric field disturbance 5 volt supply voltage and low power consumption pin out can be changed according to customer's requirement description the ltm-99 series are miniaturized receivers for infrared remote control systems. it is a single unit type module which incorporates a pin diode and a receiving preamplifier ic. the demodulated output signal can directly be decoded by a microprocessor. it has excellent sensitivity and reliable function even in disturbed working environment. device no package dimension xx: carrier frequencies for 33, 36, 38, 40, 56.8 kh package dimensions a. ltm-99x-xxs b. ltm-99x-xxf vcc gnd gnd vcc vout vout 3 21 a b c d a b c d pin out function side side top top side side top top ltm-991-xxs ltm-991-xxf ltm-991-xxt ltm-991-xxh ltm-992-xxs ltm-992-xxf ltm-992-xxt ltm-992-xxh detecting window device no. m99.p65 2000/7/11, uJ 12:10 page 49 adobe pagemaker 6.5c/win
10-50 obsoleted note : 1. all dimensions are in millimeters (inches). 2. tolerance is 0.25mm (0.01") unless otherwise noted. 3. xx: frequency c. ltm-99x-xxt d. ltm-99x-xxh absolute maximum ratings (ta=25 ) recommended operating condition block diagram v parameter symbol min max supply voltage unit vcc 4.7 5.3 v unit rating symbol parameter supply voltage operating temperature storage temperature soldering temperature vcc topr tstg tsd 6.0 -20 ~~ +70 -25 ~~ +85 260 m99.p65 2000/7/11, uJ 12:10 page 50 adobe pagemaker 6.5c/win
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obsoleted electrical characteristics application circuit item symbol conditions rating unit min typ max current consumption wave length of the max. sensitivity reception distance low level output voltage high level output voltage low level pulse width high level pulse width noise suppression i cc smax l v ol v oh t wl t wh nq no signal input, vcc=5v at the ray axis the ray receiving surface at a vertex and in relation to the ray axis: a: in the range of 30 cone b: in the range of 45 cone specified by the output twl period within a range from 5cm to the reception distance specified by the output twh period within a range from 5cm to the reception distance 25-50 no outside light 1.1 10 8 6 4.5 400 400 940 600 600 2.5 0.5 800 800 0 ma nm m v v s s pulse note: detailed condition please refer to measuring method. measuring method a. reception distance measurement fig. 1 reception distance measuring condition m99.p65 2000/7/11, uJ 12:10 page 51 adobe pagemaker 6.5c/win
10-52 obsoleted b. standard transmitter the transmitter whose output is adjusted up become vo=400m vp-p by output waveform as show in fig. 2 and the measuring method as shown in fig. 3 is specified as the standard transmitter. however, the infrared diode to be used for the transmitter should be p=940nm, =50nm. fig. 2 output wave form fig. 3 measuring method c. pulse width measurement the following wave forms are transmitter output and our receiver module's output. fig. 4 output pulse m99.p65 2000/7/11, uJ 12:10 page 52 adobe pagemaker 6.5c/win
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