TSOP753..W, TSOP755..W
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Vishay Semiconductors
Rev. 1.5, 22-Jul-16
5
Document Number: 82497
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SUITABLE DATA FORMAT
The TSOP753..W, TSOP755..W 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 TSOP753..W,
TSOP755..W 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
• Strongly or weakly modulated pattern from fluorescent
lamps with electronic ballasts (see Fig. 14 or Fig. 15)
Fig. 14 - IR Disturbance from Fluorescent Lamp
with Low Modulation
Fig. 15 - IR Disturbance from Fluorescent Lamp
with High Modulation
Note
• For data formats with long bursts please see the datasheet for TSOP752..W, TSOP754..W.
0101520
Time (ms)
16920
IR Signal
5
0101520
Time (ms)
16921
IR Signal
5
TSOP753..W TSOP755..W
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
> 4 x burst length
24 cycles
> 25 ms
Maximum number of continuous short
bursts/second
2000 2000
MCIR code Preferred Yes
RCMM code Preferred Yes
XMP-1, XMP-2, code Preferred Yes
Suppression of interference from fluorescent
lamps
Mild and complex disturbance
patterns are suppressed (example:
signal pattern of Fig. 14 and Fig. 15)
Critical disturbance
patterns are suppressed,
e.g. highly dimmed LCDs
