TSOP48..SO1
Vishay Telefunken
Suitable Data Format
The circuit of the TSOP48..SO1 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 anddisturbance signal are carrier frequency, burst lengthand duty cycle.
The data signal should fullfill the following condition:•Carrier frequency should be close to 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 beat 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 (repetitive pulse), NEC Code (repetitivedata), Toshiba Micom Format, Sharp Code
When a disturbance signal is applied to the HS0038A2it can still receive the data signal. However thesensitivity is reduced to that level that no unexpectedpulses will occure.
Some examples for such disturbance signals whichare suppressed by the TSOP48..SO1 are:•••
DC light (e.g. from tungsten bulb or sunlight)Continuous signal at 38kHz or at any other frequency
Signals from fluorescent lamps with electronicballast with low modulation:
0510time [ms]
1520
•Signals from fluorescent lamps with electronic ballast with high modulation:
0510time [s]
1520
Document Number 82093Rev. 5, 29-Mar-01www.vishay.com
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元器件交易网www.cecb2b.comTSOP48..SO1Vishay TelefunkenTypical Characteristics (Tamb = 25_C unless otherwise specified)E i n – Threshold Irradiance ( mW/m2 )e m1.0 /e Em ine E – Rel. Responsitivity0.80.60.40.20.00.794 81432.0f(E)=f01.61.20.80.40.0f = f0\"5%Df ( 3dB ) = f0/100.80.91.01.11.21.30.094 81470.40.81.21.62.0f/f0 – Relative FrequencyE – Field Strength of Disturbance ( kV/m )Figure 1. Frequency Dependence of Responsivity1.00.9t o – Output Pulse Length (ms)p0.80.70.60.50.40.30.20.100.196 12110Figure 4. Sensitivity vs. Electric Field Disturbances10f = f01 kHz10 kHz1Input burst durationl = 950 nm, optical test signal, fig.7E i n – Threshold Irradiance ( mW/m2 )e m100 Hz0.10.011.010.0100.01000.010000.094 91060.11101001000Ee – Irradiance ( mW/m2 )DVsRMS – AC Voltage on DC Supply Voltage (mV)Figure 2. Sensitivity in Dark Ambient5.04.54.03.53.02.52.01.51.00.500.010.101.0010.00100.00Ambient, l = 950 nmCorrelation with ambient light sources(Disturbanceeffect):10W/m2^1.4klx(Stand.illum.A,T=2855K)^8.2klx (Daylight,T=5900K)Figure 5. Sensitivity vs. Supply Voltage Disturbances1.00.90.80.70.60.50.40.30.20.10–30–150153045607590Sensitivity in dark ambientE e m – Threshold Irradiance (mW/m2 )in96 12111E – DC Irradiance (W/m2)E e m – Threshold Irradiance (mW/m2 )in96 12112Tamb – Ambient Temperature ( °C )Figure 3. Sensitivity in Bright AmbientFigure 6. Sensitivity vs. Ambient Temperaturewww.vishay.com4 (7)Document Number 82093Rev. 5, 29-Mar-01元器件交易网www.cecb2b.comTSOP48..SO1Vishay TelefunkenEeOptical Test Signal(IR diode TSAL6200, IF = 0.4 A, 30 pulses, f = f0, T = 10 ms)1.0T o f f – Output Pulse Length (ms)n , T o0.90.80.70.60.50.40.30.20.100.11.0l = 950 nm, optical test signal, fig.8ToffTonttpi *T* tpi w 10/fo is recommended for optimal functionVOVOHVOLtd1 )Output Signal1 ) 7/f < t < 15/f0d02 ) t = t \" 6/fpopi01611010.0100.01000.010000.0tpo2)t96 12114Ee – Irradiance (mW/m2)Figure 7. EeOptical Test SignalS ( l ) r e l – Relative Spectral Sensitivity1.21.00.80.60.40.2Figure 10. Output Pulse Diagram600 msT = 60 ms600 mst94 8134VOVOHVOLOutput Signal, ( see Fig.10 )0750TonTofft94 840885095010501150l – Wavelength ( nm )Figure 8. Output Function0.80.7Envelope Duty Cycle0.60.50.40.30.20.101016156Figure 11. Relative Spectral Sensitivity vs. Wavelength0°10°20°f = 38 kHz30°40°1.00.90.80.750°60°70°80°0.696 12223p22030405060708090Burstlength [number of cycles/burst]0.60.40.200.20.4drel – Relative Transmission DistanceFigure 9. Max. Envelope Duty Cycle vs. BurstlengthFigure 12. DirectivityDocument Number 82093Rev. 5, 29-Mar-01www.vishay.com5 (7)元器件交易网www.cecb2b.com
TSOP48..SO1
Vishay TelefunkenDimensions in mm
16134
www.vishay.com6 (7)Document Number 82093
Rev. 5, 29-Mar-01
元器件交易网www.cecb2b.com
TSOP48..SO1
Vishay Telefunken
Ozone Depleting Substances Policy Statement
It is the policy of Vishay Semiconductor GmbH to
1.Meet all present and future national and international statutory requirements.
2.Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known asozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs andforbid their use within the next ten years. Various national and international initiatives are pressing for an earlier banon these substances.
Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use ofODSs listed in the following documents.
1.Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively2.Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the EnvironmentalProtection Agency (EPA) in the USA3.Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depletingsubstances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.Parameters can vary in different applications. All operating parameters must be validated for each customer applicationby the customer. Should the buyer use Vishay-Telefunken products for any unintended or unauthorized application, thebuyer shall indemnify Vishay-Telefunken against all claims, costs, damages, and expenses, arising out of, directly orindirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use.
Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, GermanyTelephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
Document Number 82093Rev. 5, 29-Mar-01www.vishay.com
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