TSOP32338 Vishay, TSOP32338 Datasheet - Page 5

• Manufacturer Part Number: TSOP32338
• Description: IR RECEIVER MODULES FOR REMOTE CONTROL SYSTEMS
• Manufacturer: Vishay

Specifications of TSOP32338

• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (min): 2.5V
• Operating Supply Voltage (max): 5.5V
• Mounting: Through Hole
• Pin Count: 3
• Operating Temperature Classification: Commercial
• Sensing Distance: 45m
• B.p.f. Center Frequency: 38.0kHz
• Voltage - Supply: 2.5 V ~ 5.5 V
• Current - Supply: 450µA
• Orientation: Side View
• Mounting Type: Through Hole
• Lead Free Status / Rohs Status: Compliant

SUITABLE DATA FORMAT
These products 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 IR receiver 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
Note
• For data formats with long bursts (more than 10 carrier cycles) please see the datasheet for TSOP348.., TSOP344.., TSOP322.., TSOP324..
Document Number: 81737
Rev. 1.5, 23-Nov-10
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 Sony code
Recommended for RCMM code
Recommended for r-step code
Recommended for XMP code
Suppression of interference from
fluorescent lamps
ballasts (see figure 14 or figure 15)
TSOP321.., TSOP323.., TSOP325.., TSOP341.., TSOP343.., TSOP345..
Common disturbance signals are
TSOP341.., TSOP321..
signal pattern of fig. 14)
supressed (example:
> 1.2 x burst length
IR Receiver Modules for Remote
6 cycles/burst
6 to 70 cycles
≥ 10 cycles
70 cycles
2000
yes
yes
yes
yes
yes
yes
Control Systems
are suppressed (examples: signal
Even critical disturbance signals
pattern of fig. 14 and fig. 15)
TSOP343.., TSOP323..
> 6 x burst length
16921
6 cycles/burst
6 to 35 cycles
16920
≥ 10 cycles
35 cycles
2000
Fig. 14 - IR Signal from Fluorescent Lamp
Fig. 15 - IR Signal from Fluorescent Lamp
yes
yes
yes
yes
yes
no
0
0
Lamp with High Modulation
IR Signal from Fluorescent
with High Modulation
with Low Modulation
IR Signal from Fluorescent
Lamp with Low Modulation
5
5
Vishay Semiconductors
Time (ms)
Time (ms)
10
10
are suppressed (examples: signal
Even critical disturbance signals
pattern of fig. 14 and fig. 15)
TSOP345.., TSOP325..
15
15
6 cycles/burst
6 to 24 cycles
≥ 10 cycles
24 cycles
> 25 ms
2000
yes
yes
yes
yes
yes
no
www.vishay.com
20
20
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