TSOP2856

TSOP28.. Vishay Telefunken Photo Modules for PCM Remote Control Systems Available types for different carrier frequencies Type TSOP2830 TSOP2836 TSOP2838 TSOP2856 fo 30 kHz 36 kHz 38 kHz 56 kHz Type TSOP2833 TSOP2837 TSOP2840 fo 33 kHz 36.7 kHz 40 kHz Description The TSOP28.. – 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. 14 500 Features D D D D D 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 Special Features D Small size package D Enhanced immunity against all kinds of disturbance light D No occurrence of disturbance pulses at the outD Short settling time after power on (10 kW optional +5V mC 3 GND 14319 *) recommended to suppress power supply disturbances www.vishay.de • FaxBack +1-408-970-5600 2 (7) Document Number 82058 Rev. 7, 31-Jan-00 TSOP28.. Vishay Telefunken Suitable Data Format The circuit of the TSOP28... is designed in that way that unexpected output pulses due to noise or disturbance signals are avoided. A bandpassfilter, an integrator stage and an automatic gain control are used to suppress such disturbances. The distinguishing mark between data signal ( not suppressed) and disturbance signal (supressed) are carrier frequency, burst length and Signal Gap Time (see diagram below). The data signal should fullfill 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 a gap time of at least 10 cycles is neccessary. • The data format should not make a continuous signal transmission. There must be a Signal Gap Time (longer than 15ms) at least each 90ms (see Figure A). Some examples for suitable data format are: NEC Code (repetitive pulse), NEC Code (repetitive data), Toshiba Micom Format, Sharp Code, RC5 Code, RECS–80 Code, R–2000 Code. When a disturbance signal is applied to the TSOP28... it can still receive the data signal. However the sensitivity is reduced to that level that no unexpected pulses will occure. Some examples for such disturbance signals which are suppressed by the TSOP28... are: • DC light (e.g. from tungsten bulb or sunlight), • Continuous signal at 38kHz or at any other frequency, • Signals from fluorescent lamps (see Figure B). • Continuous IR signal (e.g. 1ms burst, 2ms pause) Signal Gap Time 0 10 20 30 40 50 time [ms] 60 70 80 90 100 Figure A: Data Signal (Output of IR Receiver) with a Signal Gap Time of 20ms Signal Gap Time 0 2 4 6 8 10 time [ms] 12 14 16 18 20 Figure B: Disturbance Signal from Fluorescent Lamp with Signal Gap Time of 7ms (suppressed by TSOP28..) Document Number 82058 Rev. 7, 31-Jan-00 www.vishay.de • FaxBack +1-408-970-5600 3 (7) TSOP28.. Vishay Telefunken Typical Characteristics (Tamb = 25_C unless otherwise specified) 1.0 0.8 E e min – Threshold Irradiance (mW/m2 ) /eE – Rel. Responsitivity 100.0 f = fo 10.0 10 kHz 1 kHz 1.0 0.6 0.4 0.2 0.0 0.7 0.8 0.9 1.0 1.1 1.2 1.3 Df ( 3 dB ) = f0 / 7 f / f0 – Relative Frequency f = f0 "5% eE in m 100 Hz 0.1 0.1 1.0 10.0 100.0 1000.0 94 9102 96 12215 DVs RMS – AC Voltage on DC Supply Voltage (mV) Figure 1. Frequency Dependence of Responsivity 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0.01 0.10 1.00 10.00 100.00 Ambient, l = 950 nm Correlation with ambient light sources ( Disturbance effect ) : 1 0W/m2 1.4 klx ( Stand.illum.A, T = 2855 K ) 8.2 klx ( Daylight, T = 5900 K ) Figure 4. Sensitivity vs. Supply Voltage Disturbances 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 VS – Supply Voltage ( V ) Sensitivity in dark ambient E e min – Threshold Irradiance (mW/m2 ) ^ ^ 14310 E – DC Irradiance (W/m2) 14312 Figure 2. Sensitivity in Bright Ambient Ee 2.0 f ( E ) = f0 1.6 1.2 0.8 0.4 0.0 0.0 94 8147 E e min – Threshold Irradiance (mW/m2 ) Figure 5. Sensitivity vs. Supply Voltage Optical Test Signal Ee min – Threshold Irradiance ( mW/m2 ) 600 ms TD* 600 ms t Trep=100 ms * Trep–TD > 15 ms is recommended for optimal function VO VOH 0.4 0.8 1.2 1.6 2.0 VOL Ton Toff Output Signal, ( see Fig.7 ) 15808 E – Field Strength of Disturbance ( kV / m ) t Figure 3. Sensitivity vs. Electric Field Disturbances Figure 6. Output Function www.vishay.de • FaxBack +1-408-970-5600 4 (7) Document Number 82058 Rev. 7, 31-Jan-00 TSOP28.. Vishay Telefunken 0.80 T on ,T – Output Pulse Length (ms) off 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.4 0.1 16163 Toff Ton optical test signal, fig.6 1.0 10.0 100.0 1000.0 10000.0 100000.0 14317 1.7 1.6 Supply current in dark ambient 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 VS – Supply Voltage ( V ) Ee – Irradiance (mW/m2) Figure 7. Output Pulse Diagram 2.0 1.8 I s – Supply Current ( mA ) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 –30 –15 14315 I s – Supply Current ( mA ) Vs = 5 V S ( l ) rel – Relative Spectral Sensitivity Figure 10. Supply Current vs. Supply Voltage 1.2 1.0 0.8 0.6 0.4 0.2 0 750 94 8408 0 15 30 45 60 75 90 850 950 1050 1150 Tamb – Ambient Temperature ( °C ) l – Wavelength ( nm ) Figure 8. Supply Current vs. Ambient Temperature 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 –30 –15 0 15 30 45 60 75 90 Sensitivity in dark ambient Figure 11. Relative Spectral Sensitivity vs. Wavelength 0° 10° 20° 30° E e min – Threshold Irradiance (mW/m2 ) 40° 1.0 0.9 0.8 0.7 50° 60° 70° 80° 0.6 96 12223p2 96 12221 Tamb – Ambient Temperature ( °C ) 0.6 0.4 0.2 0 0.2 0.4 drel – Relative Transmission Distance Figure 9. Sensitivity vs. Ambient Temperature Figure 12. Directivity Document Number 82058 Rev. 7, 31-Jan-00 www.vishay.de • FaxBack +1-408-970-5600 5 (7) TSOP28.. Vishay Telefunken Dimensions in mm 13655 www.vishay.de • FaxBack +1-408-970-5600 6 (7) Document Number 82058 Rev. 7, 31-Jan-00 TSOP28.. 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 as ozone depleting substances ( ODSs ). The Montreal Protocol ( 1987 ) and its London Amendments ( 1990 ) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency ( EPA ) in the USA 3. 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 depleting substances 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 application by the customer. Should the buyer use Vishay-Telefunken products for any unintended or unauthorized application, the buyer shall indemnify Vishay-Telefunken against all claims, costs, damages, and expenses, arising out of, directly or indirectly, 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, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423 Document Number 82058 Rev. 7, 31-Jan-00 www.vishay.de • FaxBack +1-408-970-5600 7 (7)