TSOP753..
IR Receiver Modules for
Remote Control Systems
Vishay Semiconductors
SUITABLE DATA FORMAT
The TSOP753.. 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 TSOP753.. 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:
IR Signal from Fluorescent
Lamp with Low Modulation
5
0
10
15
20
16920
Time (ms)
• DC light (e.g. from tungsten bulb or sunlight)
• Continuous signals at any frequency
Fig. 14 - IR Signal from Fluorescent Lamp
with Low Modulation
• Strongly or weakly modulated noise from fluorescent
lamps with electronic ballasts (see figure 14 or figure 15)
IR Signal from Fluorescent
Lamp with High Modulation
0
10
10
15
20
16921
Time (ms)
Fig. 15 - IR Signal from Fluorescent Lamp
with High Modulation
TSOP753..
Minimum burst length
6 cycles/burst
After each burst of length
a minimum gap time is required of
6 to 35 cycles
≥ 10 cycles
For bursts greater than
a minimum gap time in the data stream is needed of
35 cycles
> 4 x burst length
Maximum number of continuous short bursts/second
Compatible to NEC code
2000
yes
yes
no
Compatible to RC5/RC6 code
Compatible to Sony code
Compatible to XMP format
yes
yes
yes
Compatible to RCMM code
Compatible to RECS-80 code
Suppression of interference from fluorescent lamps
Most common disturbance signals are suppressed
Note
For data formats with long bursts please see the datasheet for TSOP752..
Document Number: 81939
Rev. 1.1, 13-Nov-08
www.vishay.com
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