TSOP39533 查看數據表（PDF） - Vishay Semiconductors
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TSOP39533 Datasheet PDF : 7 Pages
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TSOP381.., TSOP383.., TSOP385.., TSOP391.., TSOP393..,
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Vishay Semiconductors
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 noise from fluorescent lamps with electronic
ballasts (see figure 15 or figure 16)
0
16920
5
10
15
20
Time (ms)
Fig. 14 - IR Signal from Fluorescent Lamp
with Low Modulation
0
16921
5
10
15
20
Time (ms)
Fig. 15 - IR Signal from Fluorescent Lamp
with High Modulation
TSOP381.., TSOP391..
Minimum burst length
6 cycles/burst
After each burst of length
a minimum gap time is required of
6 to 70 cycles
≥ 10 cycles
For bursts greater than
a minimum gap time in the data
stream is needed of
70 cycles
> 1.2 x burst length
Maximum number of continuous
short bursts/second
2000
Recommended for NEC code
yes
Recommended for RC5/RC6 code
yes
Recommended for Sony code
yes
Recommended for RCMM code
yes
Recommended for r-step code
yes
Recommended for XMP code
yes
Suppression of interference from
fluorescent lamps
Common disturbance signals are
supressed (example:
signal pattern of fig. 15)
TSOP383.., TSOP393..
6 cycles/burst
6 to 35 cycles
≥ 10 cycles
35 cycles
> 6 x burst length
2000
yes
yes
no
yes
yes
yes
Even critical disturbance signals
are suppressed (examples: signal
pattern of fig. 15 and fig. 16)
TSOP385.., TSOP395..
6 cycles/burst
6 to 24 cycles
≥ 10 cycles
24 cycles
> 25 ms
2000
yes
yes
no
yes
yes
yes
Even critical disturbance signals
are suppressed (examples: signal
pattern of fig. 15 and fig. 16)
Note
• For data formats with long bursts (more than 10 carrier cycles) please see the datasheet for TSOP382.., TSOP384.., TSOP392.., TSOP394..
Rev. 1.0, 07-May-12
5
Document Number: 81743
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
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