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TSOP334 Datasheet(PDF) 5 Page - Vishay Siliconix |
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TSOP334 Datasheet(HTML) 5 Page - Vishay Siliconix |
5 / 22 page TSOP332.., TSOP334.. www.vishay.com Vishay Semiconductors Rev. 1.3, 22-Jul-16 5 Document Number: 82663 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 This series is designed to suppress spurious output pulses due to noise or disturbance signals. The devices can distinguish data signals from noise due to differences in frequency, burst length, and envelope duty cycle. The data signal should be close to the device’s band-pass center frequency (e.g. 38 kHz) and fulfill the conditions in the table below. When a data signal presented to the device in the presence of a disturbance, the sensitivity of the receiver is automatically reduced by the AGC to insure that no spurious pulses are present at the receiver’s output. Some examples which are suppressed are: • DC light (e.g. from tungsten bulbs sunlight) • Continuous signals at any frequency • Strongly or weakly modulated patterns from fluorescent lamps with electronic ballasts (see Fig. 13 or Fig. 14). Fig. 13 - IR Disturbance from Fluorescent Lamp with Low Modulation Fig. 14 - IR Disturbance from Fluorescent Lamp with High Modulation Notes • For data formats with short bursts please see the datasheet for TSOP331.., TSOP333.., TSOP335.. • For Sony 12, 15, and 20 bit IR-codes please see the datasheet for TSOP33S40 010 15 20 Time (ms) 16920 5 010 15 20 Time (ms) 16921 5 TSOP332.. TSOP334.. Minimum burst length 10 cycles/burst 10 cycles/burst After each burst of length a minimum gap time is required of 10 to 70 cycles ≥ 10 cycles 10 to 35 cycles ≥ 10 cycles For bursts greater than a minimum gap time in the data stream is needed of 70 cycles > 4 x burst length 35 cycles > 10 x burst length Maximum number of continuous short bursts/second 1800 1500 NEC code Yes Preferred RC5/RC6 code Yes Preferred Thomson 56 kHz code Yes Preferred Sharp code Yes Preferred Suppression of interference from fluorescent lamps Mild disturbance patterns are suppressed (example: signal pattern of Fig. 13) Complex and critical disturbance patterns are suppressed (example: signal pattern of Fig. 14 or highly dimmed LCDs) |
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