TSOP4138 Vishay / Small Signal & Opto Products (SSP), TSOP4138 Datasheet - Page 5

• Manufacturer Part Number: TSOP4138
• Description: DIODE, IR EMITTING, 38 KHZ, ANGLE OF HALF TRANSMISSION DISTANCE +/-45DEG/C
• Manufacturer: Vishay / Small Signal & Opto Products (SSP)

Specifications of TSOP4138

• Carrier Frequency: 38
• Current, Output: 5 mA
• Temperature, Operating: –25 to +85 °C
• Voltage, Output: 100 mV
• Voltage, Supply: 5.5 V
• Supply Voltage: 2.7- 5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

SUITABLE DATA FORMAT
The TSOP41.., TSOP43.. 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 TSOP41.., TSOP43.. 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 data sheet for TSOP48.. .
Document Number: 82135
Rev. 2.5, 29-Jan-09
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 RECS-80 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)
Remote Control Systems
IR Receiver Modules for
supressed (example: signal pattern
Common disturbance signals are
> 1.1 x burst length
6 to 70 cycles
6 cycles/burst
≥ 10 cycles
TSOP41..
70 cycles
of fig. 14)
2000
yes
yes
yes
yes
yes
yes
yes
16921
16920
Fig. 14 - IR Signal from Fluorescent Lamp
Fig. 15 - IR Signal from Fluorescent Lamp
New TSOP41.., TSOP43..
0
0
Lamp with High Modulation
IR Signal from Fluorescent
with High Modulation
IR Signal from Fluorescent
Lamp with Low Modulation
with Low Modulation
10
5
Vishay Semiconductors
suppressed (examples: signal pattern of
Even critical disturbance signals are
Time (ms)
Time (ms)
10
10
fig. 14 and fig. 15)
> 6 x burst length
6 cycles/burst
6 to 35 cycles
≥ 10 cycles
TSOP43..
35 cycles
15
15
2000
yes
yes
yes
yes
yes
yes
no
www.vishay.com
20
20
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