TSOP348..
Document Number 82202
Rev. 1.6, 22-Jan-07
Vishay Semiconductors
www.vishay.com
155
IR Receiver Modules for Remote Control Systems
Description
The TSOP348.. - series are miniaturized receivers 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. TSOP348.. is the stan-
dard IR remote control receiver series for 3 V supply
voltage, supporting all major transmission codes.
This component has not been qualified according to
automotive specifications.
16672
1
2
3
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: 2.7 V to 5.5 V
• Improved immunity against ambient light
• Lead (Pb)-free component
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
Mechanical Data
Pinning:
1 = OUT, 2 = GND, 3 = VS
Parts Table
Block Diagram Application Circuit
Part Carrier Frequency
TSOP34830 30 kHz
TSOP34833 33 kHz
TSOP34836 36 kHz
TSOP34837 36.7 kHz
TSOP34838 38 kHz
TSOP34840 40 kHz
TSOP34856 56 kHz
30 kΩ
2
3
1
VS
OUT
Demo-
GND
Pass
AGCInput
PIN
Band
dulator
Control Circuit
16833
C1=
4.7 µF
TSOPxxxx
GND
Circuit
µC
R1= 100 Ω
+ VS
GND
Transmitte r
with
TSALxxxx V
S
R
1
and C
1
recommended to suppress power supply
disturbances. The output voltage should not be
hold continuously at a voltage below V
O
= 2.0 V
by the external circuit.
V
O
17170
OUT
e3
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156
Document Number 82202
Rev. 1.6, 22-Jan-07
TSOP348..
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 VS2.7 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. 1
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. 1
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. 1
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. 1
Ee min 0.45 0.6 mW/m2
Maximum Irradiance tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig. 1
Ee max 30 W/m2
Directivity Angle of half transmission
distance
ϕ1/2 ± 45 deg
TSOP348..
Document Number 82202
Rev. 1.6, 22-Jan-07
Vishay Semiconductors
www.vishay.com
157
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
Ee
T
tpi *
t
* tpi 10/fo is recommended for optimal function
VO
VOH
VOL t
16110
Optical Test Signal
(IR diode TSAL6200, I
F
= 0.4 A, 30 pulses, f = f
0
, T = 10 ms)
Output Signal
td1) tpo2)
1)
7/f0<td<15/f0
2)
tpi - 5/f 0<tpo < tpi + 6/f0
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 10 100 1000 10000
Ee- Irradiance (mW/m²)
16908
Input Burst Duration
= 950 nm,
optical test signal, fig. 1
Output Pulse
t - Output Pulse Width (ms)
po
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 10 100 1000 10000
Ee- Irradiance (mW/m²)
16909
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 Frequency16925
f = f0± 5 %
f (3 dB) = f0/10
E /E - Rel. Responsivity
e min e
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0.01 0.1 1 10 100
E - Ambient DC Irradiance (W/m2)16911
Correlation with ambient light sources:
10 W/m21.4 klx (Std.illum.A, T= 2855 K)
10 W/m28.2 klx (Daylight, T= 5900 K)
Ambient, = 950 nm
E - Threshold Irradiance (mW/m )
e min
2
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158
Document Number 82202
Rev. 1.6, 22-Jan-07
TSOP348..
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 10 100 1000
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) = f
0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
020406080 100 120
Burst Length (number of cycles/burst)
16913
f = 38 kHz, E
e
= 2 mW/m
2
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
0.2
0.4
0.6
0.8
1.0
1.2
750 850 950 1050 1150
λ-Wavelength (nm)
16919
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
TSOP348..
Document Number 82202
Rev. 1.6, 22-Jan-07
Vishay Semiconductors
www.vishay.com
159
Suitable Data Format
The circuit of the TSOP348.. is designed so that unex-
pected output pulses due to noise or disturbance sig-
nals are avoided. A bandpass filter, an integrator
stage and an automatic gain control are used to sup-
press 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 10 cycles/burst or longer.
• After each burst which is between 10 cycles and 70
cycles a gap time of at least 14 cycles is necessary.
• For each burst which is longer than 1.8 ms a corre-
sponding gap time is necessary at some time in the
data stream. This gap time should be at least 4 times
longer than the burst.
• Up to 800 short bursts per second can be received
continuously.
Some examples for suitable data format are: NEC
Code (repetitive pulse), NEC Code (repetitive data),
Toshiba Micom Format, Sharp Code, RC5 Code,
RC6 Code, R-2000 Code, Sony Code.
When a disturbance signal is applied to the
TSOP348.. it can still receive the data signal. How-
ever the sensitivity is reduced to that level that no
unexpected pulses will occur.
Some examples for such disturbance signals which
are suppressed by the TSOP348.. 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 with high or low modulation
(see Figure 14 or Figure 15).
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
V
S
- Supply Voltage (V)
17185
E - Sensitivity (mW/m )
2
e min
Figure 14. IR Signal from Fluorescent Lamp with low Modulation
Figure 15. IR Signal from Fluorescent Lamp with high Modulation
0101520
Time (ms)
16920
IR Signal
IR Signal from fluorescent
lamp with low modulation
5
0101520
Time (ms)
16921
IR Signal
IR Signal from fluorescent
lamp with high modulation
10
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160
Document Number 82202
Rev. 1.6, 22-Jan-07
TSOP348..
Vishay Semiconductors
Package Dimensions in millimeters
16003
TSOP348..
Document Number 82202
Rev. 1.6, 22-Jan-07
Vishay Semiconductors
www.vishay.com
161
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of ODSs listed in the following documents.
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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
Notice
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