TSOP348.., TSOP344..
Vishay Semiconductors
IR Receiver Modules for Remote Control Systems
FEATURES
• Very low supply current
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against EMI
• Supply voltage: 2.5 V to 5.5 V
1
2
3
16672
• Improved immunity against ambient light
• Insensitive to supply voltage ripple and noise
• Component in accordance to RoHS 2002/95/EC and
WEEE 2002/96/EC
MECHANICAL DATA
Pinning:
1 = OUT, 2 = GND, 3 = V
S
DESCRIPTION
The TSOP348.., TSOP344.. series are miniaturized
receivers for infrared remote control systems. A PIN diode
and a preamplifier are assembled on a lead frame, the epoxy
package acts as an IR filter.
The demodulated output signal can be directly decoded by a
microprocessor. The TSOP348.. is compatible with all
common IR remote control data formats. The TSOP344.. is
optimized to suppress almost all spurious pulses from
energy saving fluorescent lamps but will also suppress some
data signals.
This component has not been qualified according to
automotive specifications.
PARTS TABLE
CARRIER FREQUENCY
30 kHz
33 kHz
36 kHz
38 kHz
40 kHz
56 kHz
STANDARD APPLICATIONS (AGC2/AGC8)
TSOP34830
TSOP34833
TSOP34836
TSOP34838
TSOP34840
TSOP34856
VERY NOISY ENVIRONMENTS (AGC4)
TSOP34430
TSOP34433
TSOP34436
TSOP34438
TSOP34440
TSOP34456
BLOCK DIAGRAM
16833
APPLICATION CIRCUIT
17170_5
3
30 kΩ
V
S
1
Input
AGC
Band
pass
Demo-
dulator
OUT
R
1
IR receiver
V
S
+
V
S
C
1
OUT
GND
V
O
µC
GND
Transmitter
with
TSALxxxx
2
PIN
Control circuit
GND
R
1
and C
1
are recommended for protection against EOS.
Components should
be
in the range of 33
Ω
< R
1
< 1 kΩ,
C
1
> 0.1 µF.
Document Number: 81732
Rev. 1.3, 29-Jan-09
Circuit
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121
TSOP348.., TSOP344..
Vishay Semiconductors
IR Receiver Modules for
Remote Control Systems
ABSOLUTE MAXIMUM RATINGS
(1)
PARAMETER
Supply voltage (pin 3)
Supply current (pin 3)
Output voltage (pin 1)
Output current (pin 1)
Junction temperature
Storage temperature range
Operating temperature range
Power consumption
Soldering temperature
T
amb
≤
85 °C
t
≤
10 s, 1 mm from case
TEST CONDITION
SYMBOL
V
S
I
S
V
O
I
O
T
j
T
stg
T
amb
P
tot
T
sd
VALUE
- 0.3 to + 6.0
3
- 0.3 to (V
S
+ 0.3)
5
100
- 25 to + 85
- 25 to + 85
10
260
UNIT
V
mA
V
mA
°C
°C
°C
mW
°C
Note
(1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating condtions for extended periods may affect the device reliability.
ELECTRICAL AND OPTICAL CHARACTERISTICS
(1)
PARAMETER
Supply current (pin 3)
Supply voltage
Transmission distance
Output voltage low (pin 1)
Minimum irradiance
Maximum irradiance
Directivity
E
v
= 0, test signal see fig. 1,
IR diode TSAL6200,
I
F
= 250 mA
I
OSL
= 0.5 mA, E
e
= 0.7 mW/m
2
,
test signal see fig. 1
Pulse width tolerance:
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 1
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 1
Angle of half transmission distance
TEST CONDITION
E
v
= 0, V
S
= 3.3 V
E
v
= 40 klx, sunlight
SYMBOL
I
SD
I
SH
V
S
d
V
OSL
E
e min.
E
e max.
ϕ
1/2
30
± 45
0.1
2.5
45
100
0.25
MIN.
0.27
TYP.
0.35
0.45
5.5
MAX.
0.45
UNIT
mA
mA
V
m
mV
mW/m
2
W/m
2
deg
Note
(1)
T
amb
= 25 °C, unless otherwise specified
TYPICAL CHARACTERISTICS
T
amb
= 25 °C, unless otherwise specified
1
E
e
Optical Test Signal
t
po
- Output Pulse
Width
(ms)
(IR diode TSAL6200, I
F
= 0.4 A, 30 pulses, f = f
0
, t = 10 ms)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Output Pulse
Width
Input Burst Length
t
t
pi
*
* t
pi
V
O
V
OH
V
OL
t
d1 )
T
10/f
0
is recommended for optimal function
16110
Output Signal
1)
2)
7/f
0
<
t
d
<
15/f
0
t
pi
- 5/f
0
<
t
po
<
t
pi
+ 6/f
0
t
po2 )
t
λ
= 950 nm,
Optical Test Signal, Fig. 1
0.1
20743
1
10
100
1000
10 000
E
e
- Irradiance (mW/m²)
Fig. 1 - Output Active Low
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122
Fig. 2 - Pulse Length and Sensitivity in Dark Ambient
Document Number: 81732
Rev. 1.3, 29-Jan-09
TSOP348.., TSOP344..
IR Receiver Modules for
Remote Control Systems
Vishay Semiconductors
E
e
E
e min.
- Threshold Irradiance (mW/m²)
Optical Test Signal
4
Correlation
with
Ambient Light Sources:
3.5 10
W/m²
= 1.4 klx (Std. illum. A, T = 2855 K)
10
W/m²
=
8.2
klx (Daylight, T = 5900 K)
3
2.5
2
1.5
1
0.5
0
0.01
Wavelength
of Ambient
Illumination:
λ
= 950 nm
600 µs
t = 60 ms
Output Signal,
(see fig. 4)
600 µs
t
94
8134
V
O
V
OH
V
OL
t
on
t
off
t
20745
0.1
1
10
100
E
e
- Ambient DC Irradiance (W/m²)
Fig. 6 - Sensitivity in Bright Ambient
Fig. 3 - Output Function
T
on
, T
off
- Output Pulse
Width
(ms)
T
on
0.7
0.6
0.5
T
off
0.4
0.3
0.2
0.1
0
0.1
λ
= 950 nm,
Optical Test Signal, Fig. 3
1
10
100
1000
10 000
E
e min.
- Threshold Irradiance (mW/m²)
0.8
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1
10
100
1000
f = 30 kHz
f = f
0
f = 20 kHz
f = 10 kHz
f = 100 Hz
20744
E
e
- Irradiance (mW/m²)
Fig. 4 - Output Pulse Diagram
20746
Δ
Vs
RMS
- AC
Voltage
on DC Supply
Voltage
(mV)
Fig. 7 - Sensitivity vs. Supply Voltage Disturbances
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.7
16925
500
E
e min.
/E
e
- Rel. Responsivity
E - Max. Field Strength (V/m)
450
400
350
300
250
200
150
100
50
0
f = f
0
± 5 %
Δ
f(3 dB) = f
0
/10
0.9
1.1
1.3
0
20747
500
1000
1500
2000
2500
3000
f/f
0
- Relative Frequency
f - EMI Frequency (MHz)
Fig. 8 - Sensitivity vs. Electric Field Disturbances
Fig. 5 - Frequency Dependence of Responsivity
Document Number: 81732
Rev. 1.3, 29-Jan-09
www.vishay.com
123
TSOP348.., TSOP344..
Vishay Semiconductors
IR Receiver Modules for
Remote Control Systems
1
0.9
0°
10°
20°
30°
Max. Envelope Duty Cycle
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
TSOP344..
TSOP348..
40°
1.0
0.9
0.8
50°
60°
70°
0.7
80°
f = 38 kHz, E
e
= 2 mW/m²
20
40
60
80
100
120
0.6
96 12223p2
0.4
0.2
0
0.2
0.4
0.6
20748
Burst Length (number of cycles/burst)
d
rel
- Relative Transmission Distance
Fig. 12 - Horizontal Directivity
Fig. 9 - Max. Envelope Duty Cycle vs. Burst Length
E
e min.
- Threshold Irradiance (mW/m²)
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
- 30
- 10
10
30
50
70
90
0.2
0.18
E
e min.
- Sensitivity (mW/m²)
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
2
2.5
3
3.5
4
4.5
5
5.5
6
20749
T
amb
- Ambient Temperature (°C)
20750
V
s
- Supply
Voltage
(V)
Fig. 13 - Sensitivity vs. Supply Voltage
Fig. 10 - Sensitivity vs. Ambient Temperature
1.2
S (
λ
)
rel
- Relative Spectral Sensitivity
1.0
0.8
0.6
0.4
0.2
0.0
750
850
950
1050
1150
16919
λ
-
Wavelength
(nm)
Fig. 11 - Relative Spectral Sensitivity vs. Wavelength
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124
Document Number: 81732
Rev. 1.3, 29-Jan-09
TSOP348.., TSOP344..
IR Receiver Modules for
Remote Control Systems
SUITABLE DATA FORMAT
The TSOP348.., TSOP344.. 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 TSOP348.., TSOP344..
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
• Strongly or weakly modulated noise from fluorescent
lamps with electronic ballasts (see figure 14 or figure 15)
16920
Vishay Semiconductors
IR Signal
IR Signal from Fluorescent
Lamp
with
Low Modulation
0
5
10
15
20
Time (ms)
Fig. 14 - IR Signal from Fluorescent Lamp
with Low Modulation
IR Signal from Fluorescent
Lamp
with
High Modulation
IR Signal
0
16921
10
10
15
20
Time (ms)
Fig. 15 - IR Signal from Fluorescent Lamp
with High Modulation
TSOP348..
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 Thomson 56 kHz code
Recommended for Mitsubishi code (38 kHz, preburst 8 ms, 16 bit)
Recommended for Sharp code
Suppression of interference from fluorescent lamps
10 cycles/burst
10 to 70 cycles
≥
10 cycles
70 cycles
> 4 x burst length
1800
yes
yes
yes
yes
yes
yes
Most common disturbance
signals are suppressed
TSOP344..
10 cycles/burst
10 to 35 cycles
≥
10 cycles
35 cycles
> 10 x burst length
1500
yes
yes
no
yes
no
yes
Even extreme disturbance
signals are suppressed
Note
For data formats with short bursts please see the datasheet for TSOP341.., TSOP343..
Document Number: 81732
Rev. 1.3, 29-Jan-09
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125
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