TSOP341..ST1F
Document Number 81292
Rev. 1.0, 02-Mar-06
Vishay Semiconductors
www.vishay.com
1
1
2318296
IR Receiver Modules for Remote Control Systems
Description
The TSOP341..ST1F - series are miniaturized receiv-
ers for infrared remote control systems. PIN diode
and preamplifier are assembled on lead frame, the
epoxy package is designed as IR filter.
The demodulated output signal can directly be
decoded by a microprocessor. The main benefit is the
operation with short burst transmission codes and
high data rates at a supply voltage of 3 V.
Features
• Photo detector and preamplifier in one
package
• Internal filter for PCM frequency
• Improved shielding against electrical
field disturbance
• TTL and CMOS compatibility
• Output active low
• Supply voltage range: 2.7 V to 5.5 V
• High immunity against ambient light
• Lead (Pb)-free component
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
Special Features
• Enhanced data rate up to 4000 bit/s
• Operation with short short bursts possible
(≥ 6 cycles/burst)
Mechanical Data
Pinning:
1 = OUT, 2 = GND, 3 = VS
Parts Table
Block Diagram
Application Circuit
Part Carrier Frequency
TSOP34130ST1F 30 kHz
TSOP34133ST1F 33 kHz
TSOP34136ST1F 36 kHz
TSOP34137ST1F 36.7 kHz
TSOP34138ST1F 38 kHz
TSOP34140ST1F 40 kHz
TSOP34156ST1F 56 kHz
30 kΩ
2
3
1
VS
OUT
Demo-
GND
Pass
AGCInput
PIN
Band
dulator
Control Circuit
16833
C
1
=
4.7 µF
TSOPxxxx
GND
Circuit
µC
R
1
=100Ω
+VS
GND
Transmitter
with
TSALxxxx VS
R1+C
1recommended to suppress power supply
disturbances.
VO
17170_3
e3
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Document Number 81292
Rev. 1.0, 02-Mar-06
TSOP341..ST1F
Vishay Semiconductors
Absolute Maximum Ratings
Tamb = 25 °C, unless otherwise specified
Electrical and Optical Characteristics
Tamb = 25 °C, unless otherwise specified
Parameter Test condition Symbol Value Unit
Supply Voltage (Pin 3) VS- 0.3 to + 6.0 V
Supply Current (Pin 3) IS3mA
Output Voltage (Pin 1) VO- 0.3 to
(VS+ 0.3)
V
Output Current (Pin 1) IO10 mA
Junction Temperature Tj100 °C
Storage Temperature Range Tstg - 25 to + 85 °C
Operating Temperature Range Tamb - 25 to + 85 °C
Power Consumption (Tamb ≤ 85 °C) Ptot 30 mW
Soldering Temperature t ≤ 10 s, 1 mm from case Tsd 260 °C
Parameter Test condition Symbol Min Typ. Max Unit
Supply Current (Pin 3) Ev = 0 ISD 0.7 1.2 1.5 mA
Ev = 40 klx, sunlight ISH 1.3 mA
Supply Voltage Tamb = - 25 °C to + 85 °C VS2.7 5.5 V
Tamb = 0 °C to + 60 °C,
Ev < 30 klx, sunlight
VS2.4 5.5 V
Transmission Distance Ev = 0, test signal see fig.1,
IR diode TSAL6200,
IF = 250 mA
d35m
Output Voltage Low (Pin 1) IOSL = 0.5 mA, Ee = 0.7 mW/m2,
test signal see fig. 1
VOSL 250 mV
Minimum Irradiance (30 - 40
kHz)
VS = 3 V
Pulse width tolerance:
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig.3
Ee min 0.2 0.4 mW/m2
Minimum Irradiance (56 kHz) VS = 3 V
Pulse width tolerance:
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig.3
Ee min 0.3 0.5 mW/m2
Minimum Irradiance (30 - 40
kHz)
VS = 5 V
Pulse width tolerance:
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig.3
Ee min 0.35 0.5 mW/m2
Minimum Irradiance (56 kHz) VS = 5 V
Pulse width tolerance:
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig.3
Ee min 0.45 0.6 mW/m2
Maximum Irradiance tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig. 3
Ee max 30 W/m2
Directivity Angle of half transmission
distance
ϕ1/2 ± 45 deg
TSOP341..ST1F
Document Number 81292
Rev. 1.0, 02-Mar-06
Vishay Semiconductors
www.vishay.com
3
Typical Characteristics
Tamb = 25 °C, unless otherwise specified
Figure 1. Output Function
Figure 2. Pulse Length and Sensitivity in Dark Ambient
Figure 3. Output Function
E
e
T
t
pi
*)
t
V
O
V
OH
V
OL
t
po2)
t
14337
Optical Test Signal
(IR diode TSAL6200, I
F
= 0.4 A, N = 6 pulses,
f = f
0
, T = 10 ms)
Output Signal
t
d1)
1)
3/f
0
< t
d
< 9/f
0
2)
t
pi
- 4/f
0
< t
po
< t
pi
+ 6/f
0
*) t
pi
6/fo is recommended for optimal function
t – Output Pulse Width (ms)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.1 1.0 10.0 100.0 1000.0 10000.0
Ee - Irradiance (mW/m²)
16907
po
Input Burst Duration
= 950 nm,
optical test signal, fig.1
Output Pulse
Ee
t
VO
VOH
VOL t
600 µs 600 µs
T = 60 ms
Ton Toff
94 8134
Optical Test Signal
Output Signal, (see Fig. 4)
Figure 4. Output Pulse Diagram
Figure 5. Frequency Dependence of Responsivity
Figure 6. Sensitivity in Bright Ambient
T ,T – Output Pulse Width (ms)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.1 1.0 10.0 100.0 1000.010000.0
Ee – Irradiance (mW/m2)
16910
To ff
= 950 nm,
optical test signal, fig. 3
To n
on off
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.7 0.9 1.1 1.3
f/f0 – Relative Frequency
16926
f (3 dB) = f0/7
E / E – Rel. Responsivity
e min e
f = f0 ± 5 %
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0.01 0.10 1.00 10.00 100.00
E – Ambient DC Irradiance (W/m2)16911
Correlation with ambient light sources:
10 W/m
2
1.4 klx (Std.illum.A, T= 2855 K)
10 W/m
2
8.2 klx (Daylight, T= 5900 K)
Ambient, = 950 nm
E – Threshold Irradiance (mW/m )
e min
2
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Document Number 81292
Rev. 1.0, 02-Mar-06
TSOP341..ST1F
Vishay Semiconductors
Figure 7. Sensitivity vs. Supply Voltage Disturbances
Figure 8. Sensitivity vs. Electric Field Disturbances
Figure 9. Max. Envelope Duty Cycle vs. Burstlength
0.0
0.5
1.0
1.5
2.0
0.1 1.0 10.0 100.0 1000.0
V
sRMS
- AC Voltage on DC Supply Voltage (mV)
16912
f = f
o
f = 10 kHz
E – Threshold Irradiance (mW/m²)
e min
f = 1 kHz
f = 100 Hz
E – Threshold Irradiance (mW/m²)
0.0 0.4 0.81.2 1.6
0.0
0.4
0.8
1.2
2.0
E – Field Strength of Disturbance (kV/m)
2.0
94 8147
1.6
e min
f(E) = f0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
020406080 100 120
Burst Length (number of cycles/burst)
16914
f = 38 kHz, Ee = 2 mW/m2
Max. Envelope Duty Cycle
Figure 10. Sensitivity vs. Ambient Temperature
Figure 11. Relative Spectral Sensitivity vs. Wavelength
Figure 12. Directivity
0.0
0.1
0.2
0.3
0.4
0.5
0.6
- 30 - 15 0 15 30 45 60 75 90
Tamb – Ambient Temperature (°C)
16918
Sensitivity in dark ambient
E – Threshold Irradiance (mW/m²)
e min
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
750 850 950 1050 1150
18998λ-Wavelength (nm)
S ( ) - Relative Spectral Sensitivityλrel
96 12223p2
0.4 0.2 0 0.2 0.4 0.6
0.6
0.9
0°
30°
10° 20°
40°
50°
60°
70°
80°
1.0
0.8
0.7
drel - Relative Transmission Distance
TSOP341..ST1F
Document Number 81292
Rev. 1.0, 02-Mar-06
Vishay Semiconductors
www.vishay.com
5
Suitable Data Format
The circuit of the TSOP341..ST1F is designed in that
way that unexpected output pulses due to noise or
disturbance signals are avoided. A bandpass filter, an
integrator stage and an automatic gain control are
used to suppress such disturbances.
The distinguishing mark between data signal and dis-
turbance signal are carrier frequency, burst length
and duty cycle.
The data signal should fulfill the following conditions:
• Carrier frequency should be close to center fre-
quency of the bandpass (e.g. 38 kHz).
• Burst length should be 6 cycles/burst or longer.
• After each burst which is between 6 cycles and 70
cycles a gap time of at least 10 cycles is necessary.
• For each burst which is longer than 1.8 ms a corre-
sponding gap time is necessary at some point in the
data stream. This gap time should have at least same
length as the burst.
• Up to 2200 short bursts per second can be received
continuously.
Some examples for suitable data format are: NEC
Code, Toshiba Micom Format, Sharp Code, RC5
Code, RC6 Code, RCMM Code, R-2000 Code,
RECS-80 Code.
When a disturbance signal is applied to the
TSOP341..ST1F it can still receive the data signal.
However the sensitivity is reduced to such a level that
no unexpected pulses will occur.
Some examples for such disturbance signals which
are suppressed by the TSOP341..ST1F are:
• DC light (e.g. from tungsten bulb or sunlight)
• Continuous signal at 38 kHz or at any other fre-
quency
• Signals from fluorescent lamps with electronic bal-
last (an example of the signal modulation is in the fig-
ure below).
Figure 13. Sensitivity vs. Supply Voltage
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VS – Supply Voltage (V)
17185
E – Sensitivity (mW/m )
2
e min
Figure 14. IR Signal from Fluorescent Lamp with low Modulation
0 5 10 15 20
Time (ms)
16920
IR Signal
IR Signal from fluorescent
lamp with low modulation
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Document Number 81292
Rev. 1.0, 02-Mar-06
TSOP341..ST1F
Vishay Semiconductors
Package Dimensions in mm
16793
TSOP341..ST1F
Document Number 81292
Rev. 1.0, 02-Mar-06
Vishay Semiconductors
www.vishay.com
7
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respectively
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substances and do not contain such substances.
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Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
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