TSOP17..TB1, Elektronika, Noty aplikacyjne
[ Pobierz całość w formacie PDF ]//-->VISHAYTSOP17..TB1Vishay SemiconductorsIR Receiver Modules for Remote Control SystemsDescriptionThe TSOP17..TB1 - series are miniaturized receiversfor infrared remote control systems. PIN diode andpreamplifier are assembled on lead frame, the epoxypackage is designed as IR filter.The demodulated output signal can directly bedecoded by a microprocessor. TSOP17..TB1 is thestandard IR remote control receiver series, support-ing all major transmission codes.GNDVSOUT94 8692Features• Photo detector and preamplifier in one package• Internal filter for PCM frequency• Improved shielding against electrical field distur-bance• TTL and CMOS compatibility• Output active low• Low power consumptionParts TablePartTSOP1730TB1TSOP1733TB1TSOP1736TB1TSOP1737TB1TSOP1738TB1TSOP1740TB1TSOP1756TB130 kHz33 kHz36 kHz36.7 kHz38 kHz40 kHz56 kHzCarrier FrequencySpecial Features• Continuous data transmission possible (up to2400 bps)• Suitable burst length≥10 cycles/burstApplication CircuitTransmitterTSOPxxxxwithTSALxxxxCircuitBlock Diagram225 kΩInputPINAGCBandPassDemo-dulatorVSR1= 100ΩVSC1=4.7 µFVO+VSOUTGNDµCGND3OUT1Control CircuitGNDR1+ C1recommended to suppress power supplydisturbances.The output voltage should not be hold continuously ata voltage below VO =3.3 V by the external circuit.Document Number 82042Rev. 13, 15-Oct-2002www.vishay.com1TSOP17..TB1Vishay SemiconductorsAbsolute Maximum RatingsTamb= 25 °C, unless otherwise specifiedParameterSupply VoltageSupply CurrentOutput VoltageOutput CurrentJunction TemperatureStorage Temperature RangeOperating Temperature RangePower ConsumptionSoldering Temperature(Tamb≤85 °C)t≤5s(Pin 2)(Pin 2)(Pin 3)(Pin 3)Test conditionSymbolVSISVOIOTjTstgTambPtotTsdValueVISHAYUnitVmAVmA°C°C°CmW°C- 0.3 to +6.05- 0.3 to +6.05100- 25 to + 85- 25 to + 8550260Electrical and Optical CharacteristicsTamb= 25 °C, unless otherwise specifiedParameterSupply Current (Pin 2)Supply Voltage (Pin 2)Transmission DistanceOutput Voltage Low (Pin 3)Irradiance (30 - 40 kHz)Irradiance (56 kHz)IrradianceDirectivityEv= 0, test signal see fig.1, IRdiode TSAL6200, IF= 400 mAIOSL= 0.5 mA, Ee= 0.7 mW/m2, f= fo, test signal see fig. 1Pulse width tolerance: tpi- 6/fo< tpo< tpi+ 6/fo, test signal see fig.1Pulse width tolerance: tpi- 6/fo< tpo< tpi+ 6/fo, test signal see fig.1tpi- 5/fo< tpo< tpi+ 6/fo, test signalsee fig. 1Angle of half transmission distanceTest conditionVS= 5 V, Ev= 0VS= 5 V, Ev= 40 klx, sunlightSymbolISDISHVSdVOSLEe minEe minEe maxϕ1/230±450.350.44.5352500.50.6Min0.8Typ.1.21.55.5Max1.5UnitmAmAVmmVmW/m2mW/m2W/m2degTypical Characteristics(Tamb= 25°C unless otherwise specified)EeOptical Test Signal(IR diode TSAL6200, IF= 0.4 A, 30 pulses, f = f, T = 10 ms)1.0tpo– Output Pulse Width ( ms )0.90.80.70.60.50.40.30.20.10.00.11.0Output Pulsettpi*T* tpiw10/fo is recommended for optimal functionVOVOHVOLtd1 )Output Signal1)2)16110Input Burst Duration7/f<td<15/ftpi–5/f<tpo<tpi+6/ftpo2 )tl= 950 nm,optical test signal, fig.110.0100.0 1000.010000.016908Ee– Irradiance ( mW/m2)Figure 1. Output FunctionFigure 2. Pulse Length and Sensitivity in Dark AmbientDocument Number 82042Rev. 13, 15-Oct-2002www.vishay.com2VISHAYTSOP17..TB1Vishay SemiconductorsEeOptical Test SignalEe min– Threshold Irradiance ( mW/m2)4.03.53.02.52.01.51.00.50.00.01Ambient,l= 950 nmCorrelation with ambient light sources:10W/m2^1.4klx(Std.illum.A,T=2855K)10W/m2^8.2klx(Daylight,T=5900K)600msT = 60 msOutput Signal,( see Fig.4 )600mst94 8134VOVOHVOLTonTofft169110.101.0010.00(W/m2)100.00E – Ambient DC IrradianceFigure 3. Output FunctionFigure 6. Sensitivity in Bright Ambient0.90.80.70.60.50.40.30.20.10.00.11.0l= 950 nm,optical test signal, fig.3ToffTonEe min– Threshold Irradiance ( mW/m2)Ton,Toff– Output Pulse Width ( ms )1.02.0f = fof = 10 kHz1.01.5f = 1 kHz0.5f = 100 Hz0.00.11.010.0100.01000.010.0100.0 1000.010000.0mW/m2)1691216909Ee– Irradiance (DVsRMS– AC Voltage on DC Supply Voltage (mV)Figure 4. Output Pulse DiagramFigure 7. Sensitivity vs. Supply Voltage DisturbancesEe min– Threshold Irradiance ( mW/m2)1.2Ee min/ Ee– Rel. Responsivity2.0f(E) = f1.61.20.80.40.00.00.40.81.21.62.0E – Field Strength of Disturbance ( kV/m )1.00.80.60.40.20.00.7f = f"5%Df( 3dB ) = f/100.91.11.316925f/f– Relative Frequency94 8147Figure 5. Frequency Dependence of ResponsivityFigure 8. Sensitivity vs. Electric Field DisturbancesDocument Number 82042Rev. 13, 15-Oct-2002www.vishay.com3TSOP17..TB1Vishay SemiconductorsVISHAY1.00.9Max. Envelope Duty Cycle1020300.80.70.60.50.40.30.20.10.0103050709011095 11340p2401.00.90.8f = 38 kHz, Ee= 2mW/m20.7506070800.60.60.40.20.20.4drel– Relative Transmission Distance16915Burst Length ( number of cycles / burst )Figure 9. Max. Envelope Duty Cycle vs. BurstlengthFigure 12. Horizontal DirectivityϕxEe min– Threshold Irradiance ( mW/m2)0.60.50.41.00.30.20.10.0–30 –150.90.80.7Sensitivity in dark ambient102030405060708015304560759095 11339p20.616918Tamb– Ambient Temperature ( C )0.60.40.20.20.4drel– Relative Transmission DistanceFigure 10. Sensitivity vs. Ambient TemperatureFigure 13. Vertical DirectivityϕyS (l)rel– Relative Spectral Sensitivity1.21.00.80.60.40.2750Suitable Data FormatThe circuit of the TSOP17..TB1 is designed in thatway that unexpected output pulses due to noise ordisturbance signals are avoided. A bandpassfilter, anintegrator stage and an automatic gain control areused to suppress such disturbances.The distinguishing mark between data signal and dis-turbance signal are carrier frequency, burst lengthand duty cycle.The data signal should fulfill the following conditions:• Carrier frequency should be close to center fre-quency of the bandpass (e.g. 38 kHz).• Burst length should be 10 cycles/burst or longer.• After each burst which is between 10 cycles and 70cycles a gap time of at least 14 cycles is necessary.• For each burst which is longer than 1.8 ms a corre-sponding gap time is necessary at some time in the8509501050115094 8408l– Wavelength ( nm )Figure 11. Relative Spectral Sensitivity vs. WavelengthDocument Number 82042Rev. 13, 15-Oct-2002www.vishay.com4VISHAYdata stream. This gap time should have at least samelength as the burst.• Up to 1400 short bursts per second can be receivedcontinuously.Some examples for suitable data format are: NECCode, Toshiba Micom Format, Sharp Code, RC5Code, RC6 Code, R-2000 Code, Sony Format(SIRCS).When a disturbance signal is applied to theTSOP17..TB1 it can still receive the data signal. How-ever the sensitivity is reduced to that level that nounexpected pulses will occure.Some examples for such disturbance signals whichare suppressed by the TSOP17..TB1 are:• DC light (e.g. from tungsten bulb or sunlight)• Continuous signal at 38 kHz or at any other fre-quency• Signals from fluorescent lamps with electronic bal-last (an example of the signal modulation is in the fig-ure below).TSOP17..TB1Vishay SemiconductorsIR SignalIR Signal from fluorescentlamp with low modulation16920510Time ( ms )1520Figure 14. IR Signal from Fluorescent Lamp with low ModulationDocument Number 82042Rev. 13, 15-Oct-2002www.vishay.com5 [ Pobierz całość w formacie PDF ]