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TSOP581 Datasheet(PDF) 5 Page - Vishay Siliconix |
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TSOP581 Datasheet(HTML) 5 Page - Vishay Siliconix |
5 / 7 page New Product TSOP581.., TSOP583.., TSOP591.., TSOP593.., TSOP585.., TSOP595.. www.vishay.com Vishay Semiconductors Rev. 1.0, 23-Feb-11 5 Document Number: 82462 THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 SUITABLE DATA FORMAT These products are designed to suppress spurious output pulses due to noise or disturbance signals. Data and disturbance signals can be distinguished by the devices according to carrier frequency, burst length and envelope duty cycle. The data signal should be close to the band-pass center frequency (e.g. 38 kHz) and fulfill the conditions in the table below. When a data signal is applied to the IR receiver in the presence of a disturbance signal, the sensitivity of the receiver is reduced to insure that no spurious pulses are present at the output. Some examples of disturbance signals which are suppressed are: • DC light (e.g. from tungsten bulb or sunlight) • Continuous signals at any frequency • Modulated IR signals from common fluorescent lamps (example of noise pattern is shown in fig. 15 or fig. 16) Fig. 15 - IR Signal from Fluorescent Lamp with Low Modulation Fig. 16 - IR Signal from Fluorescent Lamp with High Modulation Note • For data formats with long bursts (more than 10 carrier cycles) please see the datasheet for TSOP582.., TSOP592.., TSOP584.., TSOP594.. 010 15 20 Time (ms) 16920 5 010 15 20 Time (ms) 16921 5 TSOP581.., TSOP591.. TSOP583.., TSOP593.. TSOP585.., TSOP595.. Minimum burst length 6 cycles/burst 6 cycles/burst 6 cycles/burst After each burst of length a minimum gap time is required of 6 to 70 cycles ≥ 10 cycles 6 to 35 cycles ≥ 10 cycles 6 to 24 cycles ≥ 10 cycles For bursts greater than a minimum gap time in the data stream is needed of 70 cycles > 1.1 x burst length 35 cycles > 6 x burst length 24 cycles > 25 ms Maximum number of continuous short bursts/second 2000 2000 2000 Recommended for NEC code yes yes yes Recommended for RC5/RC6 code yes yes yes Recommended for Sony code yes no no Recommended for RECS-80 code yes yes yes Recommended for RCMM code yes yes yes Recommended for r-step code yes yes yes Recommended for XMP code yes yes yes Suppression of interference from fluorescent lamps Common disturbance signals are supressed (example: signal pattern of fig. 14) Internference signals from lamps with high modulation are suppressed (examples: signal pattern of fig. 14 and fig. 15) Even critical disturbance signals like dimmed LCD backlighting are suppressed |
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