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TSOP62.., TSOP64..
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SUITABLE DATA FORMAT
This series is designed to suppress spurious output pulses
due to noise or disturbance signals. The devices can
distinguish data signals from noise due to differences in
frequency, burst length, and envelope duty cycle. The data
signal should be close to the device’s band-pass center
frequency (e.g. 38 kHz) and fulfill the conditions in the table
below.
When a data signal is applied to the product in the presence
of a disturbance, the sensitivity of the receiver is
automatically reduced by the AGC to insure that no spurious
pulses are present at the receiver’s output.
Vishay Semiconductors
Some examples which are suppressed are:
16920
0
5
10
Time (ms)
15
20
? DC light (e.g. from tungsten bulbs sunlight)
? Continuous signals at any frequency
? Strongly or weakly modulated noise from fluorescent
lamps with electronic ballasts (see figure 13 or figure 14)
Fig. 13 - IR Disturbance from Fluorescent Lamp
with Low Modulation
0
5
10
15
20
16921
Time (ms)
Fig. 14 - IR Disturbance from Fluorescent Lamp
with High Modulation
TSOP62..
TSOP64..
Minimum burst length
After each burst of length
a minimum gap time is required of
For bursts greater than
a minimum gap time in the data stream is needed of
Maximum number of continuous short bursts/second
NEC code
RC5/RC6 code
Thomson 56 kHz code
Sharp code
Suppression of interference from fluorescent lamps
10 cycles/burst
10 to 70 cycles
≥ 12 cycles
70 cycles
> 4 x burst length
800
yes
yes
yes
yes
Most common disturbance
patterns are suppressed
10 cycles/burst
10 to 35 cycles
≥ 12 cycles
35 cycles
> 10 x burst length
1300
preferred
preferred
preferred
preferred
Even extreme disturbance
patterns are suppressed
Notes
? For data formats with short bursts please see the datasheet of TSOP61.., TSOP63.., TSOP65..
? Best choice of AGC for some popular IR-codes:
- TSOP6436: RC-5, RC-6, Panasonic
- TSOP6438: NEC, Sharp, r-map
- TSOP6456: r-step, Thomson RCA
? For SIRCS 15 and 20 bit, Sony 12 bit IR-codes, please see the datasheet for TSOP4S40, TSOP2S40
Rev. 1.1, 05-Feb-14
5
Document Number: 82463
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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