VISHAY
TSOP48..UH1
Document Number 82128
Rev. 4, 15-Oct-2002
Vishay Semiconductors
www.vishay.com
1
16661
IR Receiver Modules for Remote Control Systems
Description
The TSOP48..UH1 - 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. TSOP48..UH1 is the
standard IR remote control receiver series, support-
ing all major transmission codes.
Features
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against electrical field distur-
bance
• TTL and CMOS compatibility
• Output active low
• Low power consumption
Special Features
• Improved immunity against ambient light
• Suitable burst length ≥ 10 cycles/burst
Block Diagram
Parts Table
Application Circuit
Absolute Maximum Ratings
Tamb = 25 °C, unless otherwise specified
30 kΩ
2
3
1
V
S
OUT
Demo-
GND
Pass
AGCInput
PIN
Band dulator
Control Circuit
Part Carrier Frequency
TSOP4830UH1 30 kHz
TSOP4833UH1 33 kHz
TSOP4836UH1 36 kHz
TSOP4837UH1 36.7 kHz
TSOP4838UH1 38 kHz
TSOP4840UH1 40 kHz
TSOP4856UH1 56 kHz
C
1
=
4.7 µF
TSOPxxxx
OUT
GND
Circuit
µC
R
1
=100Ω
+VS
GND
Transmitter
with
TSALxxxx VS
R
1
+C
1
recommended to suppress power supply
disturbances.
VO
The output voltage should not be hold continuously at
a voltage below V
O=
3.3 V by the external circuit.
Parameter Tes t c ondition Symbol Value Unit
Supply Voltage (Pin 2) VS- 0.3 to +
6.0
V
Document Number 82128
Rev. 4, 15-Oct-2002
www.vishay.com
2
VISHAY
TSOP48..UH1
Vishay Semiconductors
Electrical and Optical Characteristics
Tamb = 25 °C, unless otherwise specified
Typical Characteristics (Tamb = 25°C unless otherwise specified)
Supply Current (Pin 2) IS5mA
Output Voltage (Pin 1) VO- 0.3 to +
6.0
V
Output Current (Pin 1) IO5mA
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 50 mW
Soldering Temperature t ≤ 5 s Tsd 260 °C
Parameter Te s t c o nd i t i on Symbol Min Typ. Max Unit
Supply Current (Pin 3) VS = 5 V, Ev = 0 ISD 0.8 1.2 1.5 mA
VS = 5 V, Ev = 40 klx, sunlight ISH 1.5 mA
Transmission Distance Ev = 0, test signal see fig.1, IR
diode TSAL6200, IF = 250 mA
d35 m
Supply Voltage VS4.5 5.5 V
Output Voltage Low (Pin 3) IOSL = 0.5 mA, Ee = 0.7 mW/m2,
test signal see fig. 1
VOSL 250 mV
Irradiance (56 kHz) Pulse width tolerance: tpi - 5/fo < tpo
< tpi + 6/fo, test signal see fig.1
Ee min 0.3 0.5 mW/m2
Irradiance (30-40 kHz) Pulse width tolerance: tpi - 5/fo < tpo
< tpi + 6/fo, test signal see fig.1
Ee min 0.2 0.4 mW/m2
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
Parameter Test condition Symbol Value Unit
Figure 1. Output Function
E
e
T
t
pi
*
t
* t
pi
w10/fo is recommended for optimal function
V
O
V
OH
V
OL
t
16110
Optical Test Signal
(IR diode TSAL6200, IF = 0.4 A, 30 pulses, f = f0, T = 10 ms)
Output Signal
t
d1)
t
po2)
1)
7/f
0
<t
d
<15/f
0
2)
t
pi
–5/f
0
<t
po
< t
pi
+6/f
0
Figure 2. Pulse Length and Sensitivity in Dark Ambient
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
E
e
– Irradiance ( mW/m
2
)
16908
Input Burst Duration
l= 950 nm,
optical test signal, fig.1
Output Pulse
t – Output Pulse Width ( ms )
po
VISHAY
TSOP48..UH1
Document Number 82128
Rev. 4, 15-Oct-2002
Vishay Semiconductors
www.vishay.com
3
Figure 3. Output Function
Figure 4. Output Pulse Diagram
Figure 5. Frequency Dependence of Responsivity
E
e
t
V
O
V
OH
V
OL
t
600 ms 600 ms
T = 60 ms
T
on
T
off
94 8134
Optical Test Signal
Output Signal, ( see Fig.4 )
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
E
e
– Irradiance ( mW/m
2
)
16909
To ff
l= 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/f
0
– Relative Frequency
16925
f = f
0
"5%
Df ( 3dB ) = f
0
/10
E / E – Rel. Responsivity
e min e
Figure 6. Sensitivity in Bright Ambient
Figure 7. Sensitivity vs. Supply Voltage Disturbances
Figure 8. Sensitivity vs. Electric Field Disturbances
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/m
2
)
16911
Correlation with ambient light sources:
10W/m
2
^1.4klx (Std.illum.A,T=2855K)
10W/m
2
^8.2klx (Daylight,T=5900K)
Ambient, l = 950 nm
E – Threshold Irradiance ( mW/m )
e min
2
0.0
0.5
1.0
1.5
2.0
0.1 1.0 10.0 100.0 1000.0
DV
sRMS
– AC Voltage on DC Supply Voltage (mV)
16912
f = f
o
f = 10 kHz
E – Threshold Irradiance ( mW/m )
e min 2
f = 1 kHz
f = 100 Hz
E – Threshold Irradiance ( mW/m )
0.0 0.4 0.8 1.2 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 2
f(E) = f
0
Document Number 82128
Rev. 4, 15-Oct-2002
www.vishay.com
4
VISHAY
TSOP48..UH1
Vishay Semiconductors
Suitable Data Format
The circuit of the TSOP48..UH1 is designed in that
way that unexpected output pulses due to noise or
disturbance signals are avoided. A bandpassfilter, 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 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
TSOP48..UH1 it can still receive the data signal. How-
ever the sensitivity is reduced to that level that no
unexpected pulses will occure.
Some examples for such disturbance signals which
are suppressed by the TSOP48..UH1 are:
• DC light (e.g. from tungsten bulb or sunlight)
• Continuous signal at 38 kHz or at any other fre-
quency
Figure 9. Max. Envelope Duty Cycle vs. Burstlength
Figure 10. Sensitivity vs. Ambient Temperature
Figure 11. Relative Spectral Sensitivity vs. Wavelength
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0 20 40 60 80 100 120
Burst Length ( number of cycles / burst )
16913
f = 38 kHz, E
e
= 2 mW/m
2
Max. Envelope Duty Cycle
0.0
0.1
0.2
0.3
0.4
0.5
0.6
–30–150 153045607590
T
amb
– Ambient Temperature ( qC )
16918
Sensitivity in dark ambient
E – Threshold Irradiance ( mW/m )
e min
2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
750 850 950 1050 1150
l– Wavelength ( nm )
16919
S ( ) – Relative Spectral Sensitivityl
rel
Figure 12. Directivity
96 12223p2
0.4 0.2 0 0.2 0.4 0.6
0.6
0.9
0q
30q
10q20q
40q
50q
60q
70q
80q
1.0
0.8
0.7
d
rel
– Relative Transmission Distance
VISHAY
TSOP48..UH1
Document Number 82128
Rev. 4, 15-Oct-2002
Vishay Semiconductors
www.vishay.com
5
• Signals from fluorescent lamps with electronic bal-
last with high or low modulation ( see Figure 13 or Fig-
ure 14 ).
Figure 13. IR Signal from Fluorescent Lamp with low Modulation
Figure 14. IR Signal from Fluorescent Lamp with high Modulation
0 5 10 15 20
Time ( ms )
16920
IR Signal
IR Signal from fluorescent
lamp with low modulation
0 5 10 15 20
Time ( ms )
16921
IR Signal
IR Signal from fluorescent
lamp with high modulation
Document Number 82128
Rev. 4, 15-Oct-2002
www.vishay.com
6
VISHAY
TSOP48..UH1
Vishay Semiconductors
Package Dimensions in mm
14433
VISHAY
TSOP48..UH1
Document Number 82128
Rev. 4, 15-Oct-2002
Vishay Semiconductors
www.vishay.com
7
Ozone Depleting Substances Policy Statement
It is the policy of Vishay Semiconductor GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and
operatingsystems with respect to their impact on the health and safety of our employees and the public, as
well as their impact on the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are
known as ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs
and forbid their use within the next ten years. Various national and international initiatives are pressing for an
earlier ban on these substances.
Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the
use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments
respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting
substances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further
notice.
Parameters can vary in different applications. All operating parameters must be validated for each
customer application by the customer. Should the buyer use Vishay Semiconductors products for any
unintended or unauthorized application, the buyer shall indemnify Vishay Semiconductors against all
claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal
damage, injury or death associated with such unintended or unauthorized use.
Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
