TSOP345(2013) View Datasheet(PDF) - Vishay Semiconductors
Part Name
Description
Manufacturer
TSOP345 Datasheet PDF : 7 Pages
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TSOP321.., TSOP323.., TSOP325.., TSOP341.., TSOP343.., TSOP345..
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Vishay Semiconductors
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. Some examples
which are suppressed are:
• DC light (e.g. from tungsten bulbs sunlight)
• Continuous signals at any frequency
• Strongly or weakly modulated patterns from fluorescent
lamps with electronic ballasts (see figure 13 or figure 14).
0
16920
5
10
15
20
Time (ms)
Fig. 13 - IR Disturbance from Fluorescent Lamp
with Low Modulation
0
16921
5
10
15
20
Time (ms)
Fig. 14 - IR Disturbance from Fluorescent Lamp
with High Modulation
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
Recommended for NEC code
Recommended for RC5/RC6 code
Recommended for RCMM code
Recommended for r-step code
Recommended for XMP code
Suppression of interference from
fluorescent lamps
TSOP341.., TSOP321..
6 cycles/burst
6 to 70 cycles
≥ 10 cycles
70 cycles
> 1.2 x burst length
2000
yes
yes
yes
yes
yes
Common disturbance patterns
are supressed (example:
signal pattern of fig. 14)
TSOP343.., TSOP323..
6 cycles/burst
6 to 35 cycles
≥ 10 cycles
35 cycles
TSOP345.., TSOP325..
6 cycles/burst
6 to 24 cycles
≥ 10 cycles
24 cycles
> 6 x burst length
> 25 ms
2000
2000
yes
yes
yes
yes
yes
Even critical disturbance patterns
are suppressed (examples: signal
pattern of fig. 14 and fig. 15)
yes
yes
yes
yes
yes
Even critical disturbance patterns
are suppressed (examples: signal
pattern of fig. 14 and fig. 15)
Notes
• For data formats with long bursts (more than 10 carrier cycles) please see the datasheet for TSOP348.., TSOP344.., TSOP322.., TSOP324..
• Example of compatible products for IR-codes:
-TSOP32336,TSOP34336, TSOP32536, TSOP34536: MCIR, RCMM
-TSOP32338, TSOP34338: Mitsubishi, RECS-80 Code, r-map, XMP-1, XMP-2
-TSOP32538, TSOP34538: Mitsubishi, RECS-80 Code, r-map
• For SIRCS 15 and 20 bit, Sony 12 bit IR-codes, please see the datasheet for TSOP4S40, TSOP2S40
Rev. 1.2, 18-Sep-13
5
Document Number: 82490
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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