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TSOP311 Datasheet(PDF) 5 Page - Vishay Siliconix

Part No. TSOP311
Description  IR Receiver Modules for Remote Control Systems
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Maker  VISHAY [Vishay Siliconix]
Homepage  http://www.vishay.com
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TSOP311 Datasheet(HTML) 5 Page - Vishay Siliconix

   
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New TSOP311../TSOP313..
Document Number 81763
Rev. 1.0, 09-Aug-07
Vishay Semiconductors
www.vishay.com
5
Suitable Data Format
The TSOP31#.. series is 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 TSOP31#.. 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 noise from fluorescent lamps with
electronic ballasts
For data formats with long bursts (more than 10 carrier cycles) please see the data sheet for TSOP312../TSOP314..
Figure 15. IR Signal from Fluorescent Lamp
with low Modulation
Figure 16. IR Signal from Fluorescent Lamp
with high Modulation
010
15
20
Time (ms)
16920
IR Signal from fluorescent
lamp with low modulation
5
010
15
20
Time (ms)
16921
IR Signal from fluorescent
lamp with high modulation
10
TSOP311..
TSOP313..
Minimum burst length
6 cycles/burst
6 cycles/burst
After each burst of length
A gap time is required of
6 to 70 cycles
10 cycles
6 to 35 cycles
10 cycles
For bursts greater than
A gap time in the data stream is needed of
70 cycles
> 1.2 x burst length
35 cycles
> 6 x burst length
Maximum continuous short bursts/second
2000
2000
Compatible to NEC code
yes
yes
Compatible to RC5/RC6 code
yes
yes
Compatible to Sony code
yes
no
Compatible to RCMM code
yes
yes
Compatible to r-step code
yes
yes
Compatible to XMP code
yes
yes
Suppression of interference from fluorescent lamps
Common disturbance signals are
supressed (Example: Signal pattern of
fig. 15)
Even critical disturbance signals are
suppressed (Examples: Signal pattern
of fig. 15 and fig. 16)


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