TSOP853.., TSOP855..
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Vishay Semiconductors
Not for New Designs
Rev. 1.9, 07-Nov-13
5
Document Number: 81860
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SUITABLE DATA FORMAT
The TSOP853.. and TSOP855.. series 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 TSOP853.. and
TSOP855.. series 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
Fig. 13 - IR Signal from Fluorescent Lamp
with Low Modulation
Fig. 14 - IR Signal from Fluorescent Lamp
with High Modulation
Notes
• For data formats with long bursts (more than 10 carrier cycles) please see the datasheet for TSOP852.., TSOP854..
• Example of compatible products for IR-codes:
- TSOP85336: MCIR, RCMM
- TSOP85338: Mitsubishi, RECS-80 Code, r-map, XMP-1, XMP-2
- TSOP85356: Mitsubishi, RECS-80 Code, r-map
0101520
Time (ms)
16920
IR Signal
5
0101520
Time (ms)
16921
IR Signal
5
TSOP853.. TSOP855..
Minimum burst length 6 cycles/burst 6 cycles/burst
After each burst of length
a minimum gap time is required of
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
35 cycles
> 6 x burst length
24 cycles
> 25 ms
Maximum number of continuous short
bursts/second
2000 2000
Recommended for NEC code yes yes
Recommended for RC5/RC6 code yes yes
Recommended for RCMM code yes yes
Recommended for r-step code) yes yes
Recommended for XMP code yes yes
Suppression of interference from fluorescent lamps
Even critical disturbance signals are
suppressed (examples: signal pattern of
fig. 13 and fig. 14)
Even critical disturbance signals are
suppressed (examples: signal pattern of
fig. 13 and fig. 14)
